Trial Outcomes & Findings for A Phase 3, Multicenter, Randomized, Open-Label Study to Compare the Efficacy and Safety of Pomalidomide in Combination With Low-Dose Dexamethasone Versus High-Dose Dexamethasone in Subjects With Refractory Multiple Myeloma or Relapsed and Refractory Multiple Myeloma and Companion Study (NCT NCT01311687)

NCT ID: NCT01311687

Last Updated: 2018-10-24

Results Overview

Progression-free survival was calculated as the time from randomization to disease progression as determined by the Independent Response Adjudication Committee based on the International Myeloma Working Group Uniform Response criteria (IMWG), or death on study, whichever occurred earlier. Progressive disease required 1 of the following: • Increase of ≥ 25% from nadir in: o Serum M-component (absolute increase ≥ 0.5 g/dl); o Urine M-component (absolute increase ≥ 200 mg/24 hours); o Bone marrow plasma cell percentage (absolute % ≥ 10%); • Development of new or increase in the size of existing bone lesions or soft tissue plasmacytomas; • Development of hypercalcemia (corrected serum calcium \> 11.5 mg/dl) attributed solely to plasma cell proliferative disease.

• Recruitment status: COMPLETED
• Study phase: PHASE3
• Target enrollment: 455 participants
• Primary outcome timeframe: From randomization until the data cut-off date of 07 September 2012. Maximum duration of follow-up for PFS assessments was 57 weeks.
• Results posted on: 2018-10-24

Participant Flow

The study was conducted at 93 sites: 68 sites in Europe, 10 sites in Australia, 10 sites in Canada, 4 sites in Russia, and 1 site in the United States (US) from 18 March 2011 to 29 August 2017.

Participants were randomized in a 2:1 ratio. Treatment phase discontinuation occurred when a participant had confirmed progressive disease. Participants who did not progress but who were intolerant to treatment, or no longer wished to receive study treatment entered the progression-free survival (PFS) follow-up period until disease progression.

Participant milestones

Measure	Pomalidomide Plus Low-Dose Dexamethasone Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone (HD-Dex) Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.
Treatment Phase STARTED	302	153
Treatment Phase Received Study Drug	300	150
Treatment Phase Crossed-over to Pomalidomide	0	11
Treatment Phase COMPLETED	302	153
Treatment Phase NOT COMPLETED	0	0
PFS Follow-up Phase STARTED	11	8
PFS Follow-up Phase Crossed-over to Pomalidomide	11	0
PFS Follow-up Phase COMPLETED	11	8
PFS Follow-up Phase NOT COMPLETED	0	0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

A Phase 3, Multicenter, Randomized, Open-Label Study to Compare the Efficacy and Safety of Pomalidomide in Combination With Low-Dose Dexamethasone Versus High-Dose Dexamethasone in Subjects With Refractory Multiple Myeloma or Relapsed and Refractory Multiple Myeloma and Companion Study

Baseline characteristics by cohort

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=302 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=153 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	Total n=455 Participants Total of all reporting groups
Age, Continuous	63.6 years STANDARD_DEVIATION 9.33 • n=5 Participants	63.7 years STANDARD_DEVIATION 9.56 • n=7 Participants	63.6 years STANDARD_DEVIATION 9.40 • n=5 Participants
Age, Customized ≤ 75 Years Old	278 Participants n=5 Participants	141 Participants n=7 Participants	419 Participants n=5 Participants
Age, Customized > 75 Years Old	24 Participants n=5 Participants	12 Participants n=7 Participants	36 Participants n=5 Participants
Sex: Female, Male Female	121 Participants n=5 Participants	66 Participants n=7 Participants	187 Participants n=5 Participants
Sex: Female, Male Male	181 Participants n=5 Participants	87 Participants n=7 Participants	268 Participants n=5 Participants
Ethnicity (NIH/OMB) Hispanic or Latino	27 Participants n=5 Participants	14 Participants n=7 Participants	41 Participants n=5 Participants
Ethnicity (NIH/OMB) Not Hispanic or Latino	228 Participants n=5 Participants	104 Participants n=7 Participants	332 Participants n=5 Participants
Ethnicity (NIH/OMB) Unknown or Not Reported	47 Participants n=5 Participants	35 Participants n=7 Participants	82 Participants n=5 Participants
Race/Ethnicity, Customized Asian	4 Participants n=5 Participants	0 Participants n=7 Participants	4 Participants n=5 Participants
Race/Ethnicity, Customized Black or African American	4 Participants n=5 Participants	3 Participants n=7 Participants	7 Participants n=5 Participants
Race/Ethnicity, Customized White	244 Participants n=5 Participants	113 Participants n=7 Participants	357 Participants n=5 Participants
Race/Ethnicity, Customized Other	2 Participants n=5 Participants	2 Participants n=7 Participants	4 Participants n=5 Participants
Race/Ethnicity, Customized Not collected	48 Participants n=5 Participants	35 Participants n=7 Participants	83 Participants n=5 Participants
Participants with Prior Anti-Myeloma (MM) Therapies	302 Participants n=5 Participants	153 Participants n=7 Participants	455 Participants n=5 Participants
Time from First Pathologic Diagnosis	6.2 years STANDARD_DEVIATION 4.02 • n=5 Participants	6.5 years STANDARD_DEVIATION 3.63 • n=7 Participants	6.3 years STANDARD_DEVIATION 3.89 • n=5 Participants
Stratification Factor 2: Disease Population Disease Population Group 1	249 Participants n=5 Participants	125 Participants n=7 Participants	374 Participants n=5 Participants
Stratification Factor 2: Disease Population Disease Population Group 2	8 Participants n=5 Participants	5 Participants n=7 Participants	13 Participants n=5 Participants
Stratification Factor 2: Disease Population Disease Population Group 3	45 Participants n=5 Participants	23 Participants n=7 Participants	68 Participants n=5 Participants
Stratification Factor 3: Number of Prior Anti-MM Therapies 2 Prior Anti-MM Therapies	17 Participants n=5 Participants	8 Participants n=7 Participants	25 Participants n=5 Participants
Stratification Factor 3: Number of Prior Anti-MM Therapies > 2 Prior Anti-MM Therapies	285 Participants n=5 Participants	145 Participants n=7 Participants	430 Participants n=5 Participants
Multiple Myeloma Stage before Study Entry Stage I	81 Participants n=5 Participants	36 Participants n=7 Participants	117 Participants n=5 Participants
Multiple Myeloma Stage before Study Entry Stage II	115 Participants n=5 Participants	56 Participants n=7 Participants	171 Participants n=5 Participants
Multiple Myeloma Stage before Study Entry Stage III	92 Participants n=5 Participants	53 Participants n=7 Participants	145 Participants n=5 Participants
Multiple Myeloma Stage before Study Entry Missing	14 Participants n=5 Participants	8 Participants n=7 Participants	22 Participants n=5 Participants

PRIMARY outcome

Timeframe: From randomization until the data cut-off date of 07 September 2012. Maximum duration of follow-up for PFS assessments was 57 weeks.

Population: Intent-to-treat population

Progression-free survival was calculated as the time from randomization to disease progression as determined by the Independent Response Adjudication Committee based on the International Myeloma Working Group Uniform Response criteria (IMWG), or death on study, whichever occurred earlier. Progressive disease required 1 of the following: • Increase of ≥ 25% from nadir in: o Serum M-component (absolute increase ≥ 0.5 g/dl); o Urine M-component (absolute increase ≥ 200 mg/24 hours); o Bone marrow plasma cell percentage (absolute % ≥ 10%); • Development of new or increase in the size of existing bone lesions or soft tissue plasmacytomas; • Development of hypercalcemia (corrected serum calcium > 11.5 mg/dl) attributed solely to plasma cell proliferative disease.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=302 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=153 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Progression-free Survival (PFS) - Primary Analysis	15.7 weeks Interval 13.0 to 20.1	8.0 weeks Interval 7.0 to 9.0	—

PRIMARY outcome

Timeframe: From randomization until the data cut-off date of 01 March 2013. Maximum duration of follow-up for PFS assessments was 74 weeks.

Population: Intent-to-treat population

Progression-free survival was calculated as the time from randomization to disease progression as determined by the Independent Response Adjudication Committee based on the International Myeloma Working Group Uniform Response criteria (IMWG), or death on study, whichever occurred earlier. Progressive disease requires 1 of the following: • Increase of ≥ 25% from nadir in: o Serum M-component (absolute increase ≥ 0.5 g/dl); o Urine M-component (absolute increase ≥ 200 mg/24 hours); o Bone marrow plasma cell percentage (absolute % ≥ 10%); • Development of new or increase in the size of existing bone lesions or soft tissue plasmacytomas; • Development of hypercalcemia (corrected serum calcium > 11.5 mg/dl) attributed solely to plasma cell proliferative disease.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=302 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=153 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Progression-free Survival (PFS) With a Later Cut-off Date	16.0 weeks Interval 13.0 to 19.6	8.1 weeks Interval 7.1 to 9.4	—

SECONDARY outcome

Timeframe: From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.

Population: Safety population (all randomized participants who received at least one dose of study drug (either pomalidomide or dexamethasone)).

An adverse event is any noxious, unintended, or untoward medical occurrence that may appear or worsen in a participant during the course of a study. A serious AE is any AE occurring at any dose that: • Results in death; • Is life-threatening; • Requires or prolongs existing inpatient hospitalization; • Results in persistent or significant disability/incapacity; • Is a congenital anomaly/birth defect; • Constitutes an important medical event. The Investigator assessed the relationship of each AE to study drug and graded the severity according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE, Version 4.0): Grade 1 = Mild (no limitation in activity or intervention required); Grade 2 = Moderate (some limitation in activity; no/minimal medical intervention required); Grade 3 = Severe (marked limitation in activity; medical intervention required, hospitalization possible); Grade 4 = Life-threatening; Grade 5 = Death.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=300 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=150 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide n=11 Participants Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Number of Participants With Adverse Events (AEs) Any adverse event	298 Participants	149 Participants	11 Participants
Number of Participants With Adverse Events (AEs) Grade 3-4 adverse events	266 Participants	127 Participants	8 Participants
Number of Participants With Adverse Events (AEs) AE related to pomalidomide	251 Participants	0 Participants	11 Participants
Number of Participants With Adverse Events (AEs) AE related to dexamethasone	205 Participants	115 Participants	5 Participants
Number of Participants With Adverse Events (AEs) AE related to either study drug	271 Participants	115 Participants	11 Participants
Number of Participants With Adverse Events (AEs) Grade 3-4 AE related to pomalidomide	199 Participants	0 Participants	6 Participants
Number of Participants With Adverse Events (AEs) Grade 3-4 AE related to dexamethasone	114 Participants	70 Participants	2 Participants
Number of Participants With Adverse Events (AEs) Grade 3-4 AE related to either study drug	212 Participants	70 Participants	6 Participants
Number of Participants With Adverse Events (AEs) Grade 5 adverse events	46 Participants	21 Participants	1 Participants
Number of Participants With Adverse Events (AEs) Serious adverse events (SAEs)	195 Participants	80 Participants	4 Participants
Number of Participants With Adverse Events (AEs) SAE related to pomalidomide	89 Participants	0 Participants	1 Participants
Number of Participants With Adverse Events (AEs) SAE related to dexamethasone	73 Participants	36 Participants	0 Participants
Number of Participants With Adverse Events (AEs) SAE related to either study drug	98 Participants	36 Participants	1 Participants
Number of Participants With Adverse Events (AEs) SAE leading to discontinuation of pomalidomide	20 Participants	0 Participants	1 Participants
Number of Participants With Adverse Events (AEs) SAE leading to discontinuation of dexamethasone	20 Participants	14 Participants	1 Participants
Number of Participants With Adverse Events (AEs) SAE leading to discontinuation of either study dru	23 Participants	14 Participants	1 Participants
Number of Participants With Adverse Events (AEs) AE leading to discontinuation of pomalidomide	30 Participants	0 Participants	1 Participants
Number of Participants With Adverse Events (AEs) AE leading to discontinuation of dexamethasone	34 Participants	16 Participants	1 Participants
Number of Participants With Adverse Events (AEs) AE leading to discontinuation of either study drug	38 Participants	16 Participants	1 Participants

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 07 September 2012. Maximum time on follow-up for survival was 70 weeks.

Population: Intent-to-treat

Overall survival is calculated as the time from randomization to death from any cause. Overall survival was censored at the last date that the participant was known to be alive for participants who were alive at the time of analysis and for participants who were lost to follow-up before death was documented.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=302 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=153 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Overall Survival - Primary Analysis	NA weeks Interval 48.1 to Could not be estimated due to the low number of events	34.0 weeks Interval 23.4 to 39.9	—

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 01 March 2013. Maximum time on follow-up for survival was 93 weeks.

Population: Intent-to-treat

Overall survival is calculated as the time from randomization to death from any cause. Overall survival was censored at the last date that the participant was known to be alive for participants who were alive at the time of analysis and for participants who were lost to follow-up before death was documented.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=302 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=153 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Overall Survival With a Later Cut-off Date	54.0 weeks Interval 45.3 to 66.4	34.9 weeks Interval 29.9 to 39.1	—

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 29 August 2017. Maximum time on follow-up for survival was 324 weeks.

Population: Intent-to-treat

Overall survival is calculated as the time from randomization to death from any cause. Overall survival was censored at the last date that the participant was known to be alive for participants who were alive at the time of analysis and for participants who were lost to follow-up before death was documented.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=302 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=153 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Overall Survival Based on the Final Dataset	56.1 weeks Interval 47.7 to 67.4	35.3 weeks Interval 29.9 to 39.9	—

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 01 March 2013. Maximum time on follow-up was 93 weeks.

Population: Intent-to-treat population

Objective response is defined as a best overall response of stringent complete response (SCR), complete response (CR), very good partial response (VGPR) or partial response (PR) based on the Independent Response Adjudication Committee: SCR: CR and normal free light chain (FLC) ratio and no clonal cells in bone marrow; CR: Negative serum and urine on immunofixation, disappearance of any soft tissue plasmacytomas and ≤ 5% plasma cells in bone marrow; VGPR: Serum and urine M-protein detectable by immunofixation but not on electrophoresis or ≥ 90% reduction in serum M-protein and urine M-protein level < 100 mg/24 hours; PR: ≥ 50% reduction of serum M-Protein and reduction in urinary M-protein by ≥ 90% or to < 200 mg/24 hours. In addition to the above, if present at baseline a ≥ 50% reduction in the size of soft tissue plasmacytomas is also required.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=302 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=153 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Percentage of Participants With an Objective Response According to International Myeloma Working Group (IMWG) Uniform Response Criteria	23.5 percentage of participants	3.9 percentage of participants	—

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 01 March 2013. Maximum time on follow-up was 93 weeks.

Population: Intent-to-treat population

Objective response defined as a best overall response of complete response (CR) or partial response (PR) based on the Independent Response Adjudication Committee: CR requires all of the following: - Absence of original monoclonal paraprotein in serum and urine by immunofixation maintained at least 42 days. - <5% plasma cell in bone marrow aspirate and on bone marrow biopsy, if performed. - No increase in size or number of lytic bone lesions. - Disappearance of soft tissue plasmacytomas. PR requires all of the following: - ≥ 50% reduction in level of serum monoclonal paraprotein, maintained at least 42 days. - Reduction in 24-hour urinary light chain extraction by ≥ 90% or to < 200 mg, maintained at least 42 days. - For patients with non-secretory myeloma, ≥ 50% reduction in plasma cells in bone marrow aspirate and on biopsy, if performed, for at least 42 days. - ≥ 50% reduction in the size of soft tissue plasmacytomas. - No increase in size or number of lytic bone lesions.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=302 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=153 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Percentage of Participants With Objective Response According to European Group for Blood and Marrow Transplantation (EBMT) Criteria	22.2 percentage of participants	3.3 percentage of participants	—

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 01 March 2013. Maximum time on follow-up was 93 weeks.

Population: Intent-to-treat population

Time to progression (TTP) is calculated as the time from randomization to the first documented progression confirmed by a blinded, independent Response Adjudication Committee and based on the International Myeloma Working Group Uniform Response criteria (IMWG). Progressive disease requires 1 of the following: • Increase of ≥ 25% from nadir in: o Serum M-component (absolute increase ≥ 0.5 g/dl); o Urine M-component (absolute increase ≥ 200 mg/24 hours); o Bone marrow plasma cell percentage (absolute % ≥ 10%); • Development of new or increase in the size of existing bone lesions or soft tissue plasmacytomas; • Development of hypercalcemia (corrected serum calcium > 11.5 mg/dl) attributed solely to plasma cell proliferative disease.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=302 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=153 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Time to Progression	20.0 weeks Interval 16.1 to 24.0	9.0 weeks Interval 8.0 to 10.9	—

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 01 March 2013. Maximum time on follow-up was 93 weeks.

Population: Intent-to-treat responder population

Time to response is calculated as the time from randomization to the initial documented response (partial response or better) based on IMWG criteria. SCR: CR and normal free light chain (FLC) ratio and no clonal cells in bone marrow; CR: Negative serum and urine on immunofixation, disappearance of any soft tissue plasmacytomas and ≤ 5% plasma cells in bone marrow; VGPR: Serum and urine M-protein detectable by immunofixation but not on electrophoresis or ≥ 90% reduction in serum M-protein and urine M-protein level < 100 mg/24 hours; PR: ≥ 50% reduction of serum M-Protein and reduction in urinary M-protein by ≥ 90% or to < 200 mg/24 hours. If present at baseline a ≥ 50% reduction in size of soft tissue plasmacytomas is also required.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=71 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=6 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Time to Response	8.1 weeks Interval 4.0 to 48.0	10.5 weeks Interval 4.1 to 42.1	—

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 01 March 2013. Maximum time on follow-up was 93 weeks.

Population: Intent-to-treat responder population

Duration of response (calculated for responders only) is defined as time from the initial documented response (partial response or better) to confirmed disease progression, based on IMWG criteria assessed by the Independent Response Adjudication Committee.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=71 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=6 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Duration of Response	35.1 weeks Interval 28.4 to 52.9	28.1 weeks Interval 20.1 to 37.1	—

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 01 March 2013. Maximum time on follow-up was 93 weeks.

Population: Intent-to-treat population with improvement in hemoglobin during the study

Time to increased hemoglobin, defined as the time from randomization to at least one category improvement from Baseline in common terminology criteria for adverse events (CTCAE) grade for hemoglobin level. Hemoglobin categories are: 1) Normal; 2) CTCAE Grade 1: < lower limit of normal (LLN) to 10.0 g/dL; 3) CTCAE Grade 2: < 10.0 to <8.0 g/dL. Participants with CTCAE Grade 3 anemia or worse at Baseline were excluded from the study.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=144 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=50 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Time to the First Hemoglobin Improvement	3.4 weeks Interval 1.1 to 49.3	1.3 weeks Interval 0.9 to 24.3	—

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 01 March 2013. Maximum time on follow-up was 93 weeks.

Population: Intent-to-treat population with improvement in bone pain

Time to improvement in bone pain is defined as the time from randomization to at least one category improvement from Baseline in bone pain category. Bone pain was categorized (from best to worst) according to answers to the European Organization for Research and Treatment of Cancer (EORTC) Quality of Life Questionnaire for patients with Multiple Myeloma Module (QLQ-MY20), Question 1, "Have you had bone aches or pain?": 1) Not at all, 2) A little, 3) Quite a bit, or 4) Very much.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=101 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=37 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Time to Improvement in Bone Pain	5.7 weeks Interval 3.7 to 88.6	4.1 weeks Interval 3.7 to 27.3	—

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 01 March 2013. Maximum time on follow-up was 93 weeks.

Population: Intent-to-treat population with improvement in renal function

Time to improvement in renal function is defined as the time from randomization to at least one category improvement from Baseline in renal function. Renal Function was categorized as (from best to worst): - Normal: creatinine clearance ≥80 mL/min; - Grade 1: creatinine clearance ≥60 to <80 mL/min; - Grade 2 : creatinine clearance ≥45 to < 60 mL/min. Participants with creatinine clearance < 45 mL/min at baseline were excluded from the study.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=94 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=45 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Time to Improvement in Renal Function	4.6 weeks Interval 3.3 to 45.6	4.1 weeks Interval 3.3 to 28.1	—

SECONDARY outcome

Timeframe: From randomization until the data cut-off date of 01 March 2013. Maximum time on follow-up was 93 weeks.

Population: Intent-to-treat population with improvement in ECOG performance status during the study

Time to improvement in ECOG performance status defined as the time from randomization until at least a one category improvement from Baseline in ECOG performance status score. The categories of the ECOG Performance Status Scale are as follows: -0: Fully active, able to carry on all pre-disease performance without restriction; -1: Restricted in physically strenuous activity but ambulatory and able to carry our work of a light or sedentary nature, e.g., light housework, office work; -2: Ambulatory and capable of all self-care but unable to carry out any work activities. Up and about more than 50% of waking hours. Patients with a score of 3, 4 or 5 were excluded from participating in the study.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=61 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=18 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Time to Improvement in Eastern Cooperative Oncology Group (ECOG) Performance Status	8.1 weeks Interval 4.1 to 44.1	4.3 weeks Interval 4.1 to 33.7	—

SECONDARY outcome

Timeframe: Day 1 of Cycle 1 (Baseline), and Day 1 of Cycles 2, 3, 4, 5 and 6

Population: The Patient Reported Outcomes (PRO) study population includes any intent-to-treat study participants with 1 active treatment and 1 PRO measurement item completed. Only participants with available data at Baseline and each time point are included.

The European Organization for Research and Treatment of Cancer (EORTC) Core Quality of Life (QOL) questionnaire (EORTC QLQ-C30) is a 30-question tool used to assess the overall quality of life in cancer patients. It consists of 15 domains: 1 global health status (GHS) scale, 5 functional scales (Physical, Role, Cognitive, Emotional, Social), and 9 symptom scales/items (Fatigue, Nausea and Vomiting, Pain, Dyspnea, Sleep Disturbance, Appetite Loss, Constipation, Diarrhea, Financial Impact). The EORTC QLQ-C30 Global Health Status/QOL scale is scored between 0 and 100, with a high score indicating better Global Health Status/QOL. Negative change from Baseline values indicate deterioration in QOL or functioning and positive values indicate improvement.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=289 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=144 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Change From Baseline in the European Organization for Research and Treatment of Cancer Cancer Quality of Life Questionnaire for Patients With Cancer (EORTC QLQ-C30) Global Health Status Domain Cycle 2, Day 1	0.52 units on a scale Standard Deviation 23.01	-3.75 units on a scale Standard Deviation 24.10	—
Change From Baseline in the European Organization for Research and Treatment of Cancer Cancer Quality of Life Questionnaire for Patients With Cancer (EORTC QLQ-C30) Global Health Status Domain Cycle 3, Day 1	2.67 units on a scale Standard Deviation 24.97	-2.36 units on a scale Standard Deviation 21.08	—
Change From Baseline in the European Organization for Research and Treatment of Cancer Cancer Quality of Life Questionnaire for Patients With Cancer (EORTC QLQ-C30) Global Health Status Domain Cycle 4, Day 1	0.80 units on a scale Standard Deviation 24.62	-3.03 units on a scale Standard Deviation 22.42	—
Change From Baseline in the European Organization for Research and Treatment of Cancer Cancer Quality of Life Questionnaire for Patients With Cancer (EORTC QLQ-C30) Global Health Status Domain Cycle 5 Day 1	0.51 units on a scale Standard Deviation 26.81	0.00 units on a scale Standard Deviation 27.44	—
Change From Baseline in the European Organization for Research and Treatment of Cancer Cancer Quality of Life Questionnaire for Patients With Cancer (EORTC QLQ-C30) Global Health Status Domain Cycle 6, Day 1	-2.51 units on a scale Standard Deviation 25.57	-0.93 units on a scale Standard Deviation 17.59	—

SECONDARY outcome

Timeframe: Day 1 of Cycle 1 (Baseline), and Day 1 of Cycles 2, 3, 4, 5 and 6

Population: PRO population with available data at Baseline and each time point.

The European Organization for Research and Treatment of Cancer (EORTC) Core Quality of Life (QOL) questionnaire (EORTC QLQ-C30) is a 30-question tool used in clinical research to assess the overall quality of life in cancer patients. It consists of 15 domains: 1 global health status (GHS) scale, 5 functional scales (Physical, Role, Cognitive, Emotional, Social), and 9 symptom scales/items (Fatigue, Nausea and Vomiting, Pain, Dyspnea, Sleep Disturbance, Appetite Loss, Constipation, Diarrhea, Financial Impact). The EORTC QLQ-C30 Physical Functioning Scale is scored between 0 and 100, with a high score indicating better functioning/support. Negative change from Baseline values indicate deterioration in functioning and positive values indicate improvement.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=289 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=144 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Change From Baseline in the EORTC QLQ-C30 Physical Functioning Domain Cycle 2, Day 1	-2.32 units on a scale Standard Deviation 18.25	-3.96 units on a scale Standard Deviation 18.35	—
Change From Baseline in the EORTC QLQ-C30 Physical Functioning Domain Cycle 3, Day 1	-0.56 units on a scale Standard Deviation 19.86	-9.69 units on a scale Standard Deviation 16.67	—
Change From Baseline in the EORTC QLQ-C30 Physical Functioning Domain Cycle 4, Day 1	0.17 units on a scale Standard Deviation 20.25	-8.08 units on a scale Standard Deviation 13.31	—
Change From Baseline in the EORTC QLQ-C30 Physical Functioning Domain Cycle 5 Day 1	0.91 units on a scale Standard Deviation 19.92	-5.43 units on a scale Standard Deviation 19.31	—
Change From Baseline in the EORTC QLQ-C30 Physical Functioning Domain Cycle 6, Day 1	0.54 units on a scale Standard Deviation 21.30	-4.81 units on a scale Standard Deviation 14.24	—

SECONDARY outcome

Timeframe: Day 1 of Cycle 1 (Baseline), and Day 1 of Cycles 2, 3, 4, 5 and 6

Population: PRO population with available data at Baseline and each time point.

The European Organization for Research and Treatment of Cancer (EORTC) Core Quality of Life (QOL) questionnaire (EORTC QLQ-C30) is a 30-question tool used in clinical research to assess the overall quality of life in cancer patients. It consists of 15 domains: 1 global health status (GHS) scale, 5 functional scales (Physical, Role, Cognitive, Emotional, Social), and 9 symptom scales/items (Fatigue, Nausea and Vomiting, Pain, Dyspnea, Sleep Disturbance, Appetite Loss, Constipation, Diarrhea, Financial Impact). The EORTC QLQ-C30 Emotional Functioning Scale is scored between 0 and 100, with a high score indicating better functioning/support. Negative change from Baseline values indicate deterioration in functioning and positive values indicate improvement.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=289 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=144 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Change From Baseline in the EORTC QLQ-C30 Emotional Functioning Domain Cycle 2, Day 1	1.22 units on a scale Standard Deviation 21.44	-2.87 units on a scale Standard Deviation 21.57	—
Change From Baseline in the EORTC QLQ-C30 Emotional Functioning Domain Cycle 3, Day 1	2.40 units on a scale Standard Deviation 20.36	-5.66 units on a scale Standard Deviation 25.36	—
Change From Baseline in the EORTC QLQ-C30 Emotional Functioning Domain Cycle 4, Day 1	2.44 units on a scale Standard Deviation 21.05	-6.31 units on a scale Standard Deviation 23.48	—
Change From Baseline in the EORTC QLQ-C30 Emotional Functioning Domain Cycle 5 Day 1	1.91 units on a scale Standard Deviation 21.97	-8.64 units on a scale Standard Deviation 23.17	—
Change From Baseline in the EORTC QLQ-C30 Emotional Functioning Domain Cycle 6, Day 1	0.19 units on a scale Standard Deviation 22.30	-4.17 units on a scale Standard Deviation 13.18	—

SECONDARY outcome

Timeframe: Day 1 of Cycle 1 (Baseline), and Day 1 of Cycles 2, 3, 4, 5 and 6

Population: PRO population with available data at Baseline and each time point.

The European Organization for Research and Treatment of Cancer (EORTC) Core Quality of Life (QOL) questionnaire (EORTC QLQ-C30) is a 30-question tool used in clinical research to assess the overall quality of life in cancer patients. It consists of 15 domains: 1 global health status (GHS) scale, 5 functional scales (Physical, Role, Cognitive, Emotional, Social), and 9 symptom scales/items (Fatigue, Nausea and Vomiting, Pain, Dyspnea, Sleep Disturbance, Appetite Loss, Constipation, Diarrhea, Financial Impact). The EORTC QLQ-C30 Fatigue Scale is scored between 0 and 100, with a high score indicating a higher level of symptoms. Negative change from Baseline values indicate reduction in fatigue (i.e. improvement in symptom) and positive values indicate increases in fatigue (i.e. worsening of symptom).

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=289 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=144 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Change From Baseline in the EORTC QLQ-C30 Fatigue Domain Cycle 2, Day 1	2.43 units on a scale Standard Deviation 27.39	4.03 units on a scale Standard Deviation 25.37	—
Change From Baseline in the EORTC QLQ-C30 Fatigue Domain Cycle 3, Day 1	3.26 units on a scale Standard Deviation 27.66	7.76 units on a scale Standard Deviation 23.73	—
Change From Baseline in the EORTC QLQ-C30 Fatigue Domain Cycle 4, Day 1	1.71 units on a scale Standard Deviation 26.21	9.43 units on a scale Standard Deviation 28.88	—
Change From Baseline in the EORTC QLQ-C30 Fatigue Domain Cycle 5 Day 1	0.21 units on a scale Standard Deviation 28.41	9.47 units on a scale Standard Deviation 23.00	—
Change From Baseline in the EORTC QLQ-C30 Fatigue Domain Cycle 6, Day 1	0.99 units on a scale Standard Deviation 31.13	10.49 units on a scale Standard Deviation 16.38	—

SECONDARY outcome

Timeframe: Day 1 of Cycle 1 (Baseline), and Day 1 of Cycles 2, 3, 4, 5 and 6

Population: PRO population with available data at Baseline and each time point

The European Organization for Research and Treatment of Cancer (EORTC) Core Quality of Life (QOL) questionnaire (EORTC QLQ-C30) is a 30-question tool used in clinical research to assess the overall quality of life in cancer patients. It consists of 15 domains: 1 global health status (GHS) scale, 5 functional scales (Physical, Role, Cognitive, Emotional, Social), and 9 symptom scales/items (Fatigue, Nausea and Vomiting, Pain, Dyspnea, Sleep Disturbance, Appetite Loss, Constipation, Diarrhea, Financial Impact). The EORTC QLQ-C30 Pain Scale is scored between 0 and 100, with a high score indicating a higher level of symptoms. Negative change from Baseline values indicate reductions in pain (i.e. improvement in symptom) and positive values indicate increases in pain (i.e. worsening of symptom).

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=289 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=144 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Change From Baseline in the EORTC QLQ-C30 Pain Domain Cycle 2, Day 1	-2.70 units on a scale Standard Deviation 25.74	0.36 units on a scale Standard Deviation 25.32	—
Change From Baseline in the EORTC QLQ-C30 Pain Domain Cycle 3, Day 1	-3.58 units on a scale Standard Deviation 29.62	2.83 units on a scale Standard Deviation 25.47	—
Change From Baseline in the EORTC QLQ-C30 Pain Domain Cycle 4, Day 1	-2.41 units on a scale Standard Deviation 30.52	3.03 units on a scale Standard Deviation 25.84	—
Change From Baseline in the EORTC QLQ-C30 Pain Domain Cycle 5 Day 1	-1.64 units on a scale Standard Deviation 28.00	2.47 units on a scale Standard Deviation 31.59	—
Change From Baseline in the EORTC QLQ-C30 Pain Domain Cycle 6, Day 1	-2.40 units on a scale Standard Deviation 30.99	10.19 units on a scale Standard Deviation 23.67	—

SECONDARY outcome

Timeframe: Day 1 of Cycle 1 (Baseline), and Day 1 of Cycles 2, 3, 4, 5 and 6

Population: PRO population with available data at Baseline and each time point.

The European Organization for Research and Treatment of Cancer QoL Questionnaire for Patients with Multiple Myeloma (EORTC QLQ-MY20) is a 20-question tool used in clinical research to assess health-related quality of life in multiple myeloma patients. The QLQ-MY20 includes four domains (Disease Symptoms, Side-Effects of Treatment, Body Image and Future Perspective). The EORTC QLQ-MY20 Disease Symptoms Scale is scored between 0 and 100, with a high score reflecting a higher level of symptoms. Negative change from Baseline values indicate reduction (i.e. improvement) in symptoms and positive values indicate increase (i.e. worsening) of symptoms.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=289 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=144 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Change From Baseline in the European Organization for Research and Treatment of Cancer QoL Questionnaire for Patients With Multiple Myeloma (EORTC QLQ-MY20) Disease Symptoms Cycle 2, Day 1	-0.50 units on a scale Standard Deviation 16.51	-1.07 units on a scale Standard Deviation 17.78	—
Change From Baseline in the European Organization for Research and Treatment of Cancer QoL Questionnaire for Patients With Multiple Myeloma (EORTC QLQ-MY20) Disease Symptoms Cycle 3, Day 1	-1.36 units on a scale Standard Deviation 19.51	0.97 units on a scale Standard Deviation 19.93	—
Change From Baseline in the European Organization for Research and Treatment of Cancer QoL Questionnaire for Patients With Multiple Myeloma (EORTC QLQ-MY20) Disease Symptoms Cycle 4, Day 1	-1.15 units on a scale Standard Deviation 19.54	1.35 units on a scale Standard Deviation 16.94	—
Change From Baseline in the European Organization for Research and Treatment of Cancer QoL Questionnaire for Patients With Multiple Myeloma (EORTC QLQ-MY20) Disease Symptoms Cycle 5 Day 1	-0.53 units on a scale Standard Deviation 17.39	1.48 units on a scale Standard Deviation 17.56	—
Change From Baseline in the European Organization for Research and Treatment of Cancer QoL Questionnaire for Patients With Multiple Myeloma (EORTC QLQ-MY20) Disease Symptoms Cycle 6, Day 1	0.60 units on a scale Standard Deviation 19.64	2.12 units on a scale Standard Deviation 13.43	—

SECONDARY outcome

Timeframe: Day 1 of Cycle 1 (Baseline), and Day 1 of Cycles 2, 3, 4, 5 and 6

Population: PRO population with available data at Baseline and each time point.

The European Organization for Research and Treatment of Cancer QoL Questionnaire for Patients with Multiple Myeloma (EORTC QLQ-MY20) is a 20-question tool used in clinical research to assess health-related quality of life in multiple myeloma patients. The QLQ-MY20 includes four domains (Disease Symptoms, Side-Effects of Treatment, Body Image and Future Perspective). The EORTC QLQ-MY20 Side Effects Scale is scored between 0 and 100, with a high score reflecting a higher level of symptoms. Negative change from Baseline values indicate reduction in side effects (i.e.improvement in symptom) and positive values indicate increase in side effects (i.e. worsening of symptom).

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=289 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=144 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Change From Baseline in the EORTC QLQ-MY20 Side Effects Domain Cycle 2, Day 1	2.71 units on a scale Standard Deviation 13.90	2.61 units on a scale Standard Deviation 13.34	—
Change From Baseline in the EORTC QLQ-MY20 Side Effects Domain Cycle 3, Day 1	3.26 units on a scale Standard Deviation 13.72	5.35 units on a scale Standard Deviation 12.27	—
Change From Baseline in the EORTC QLQ-MY20 Side Effects Domain Cycle 4, Day 1	3.73 units on a scale Standard Deviation 14.47	7.46 units on a scale Standard Deviation 11.61	—
Change From Baseline in the EORTC QLQ-MY20 Side Effects Domain Cycle 5 Day 1	4.74 units on a scale Standard Deviation 14.45	6.89 units on a scale Standard Deviation 10.32	—
Change From Baseline in the EORTC QLQ-MY20 Side Effects Domain Cycle 6, Day 1	4.55 units on a scale Standard Deviation 15.76	7.30 units on a scale Standard Deviation 9.35	—

SECONDARY outcome

Timeframe: Day 1 of Cycle 1 (Baseline), and Day 1 of Cycles 2, 3, 4, 5 and 6

Population: PRO population with available data at Baseline and each time point.

EQ-5D is a self-administered questionnaire that assesses health-related quality of life (QOL). The EQ-5D descriptive health profile comprises five dimensions of health (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression). Each dimension has 3 levels of response: No problem (1), some problems (2), and extreme problems (3). A unique EQ-5D health state is defined by combining one level from each of the five dimensions into a single utility index score. EQ-5D index values range from -0.59 to 1.00 where an EQ-5D score of 1.00 equals "perfect health", a score of 0 equals "death" and a score of -0.59 equals worst imaginable health state. A positive change from Baseline score indicates improvement in health status. A negative change from Baseline score indicates worsening in health status. Negative scores represent the possible though unlikely situation that a patient's QOL is worse than death, i.e. they would rather be dead than living with that QOL

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=289 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=144 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Change From Baseline in the European Quality of Life-5 Dimensions (EQ-5D) Utility Index Score Cycle 2, Day 1	-0.03 units on a scale Standard Deviation 0.28	-0.02 units on a scale Standard Deviation 0.23	—
Change From Baseline in the European Quality of Life-5 Dimensions (EQ-5D) Utility Index Score Cycle 3, Day 1	0.01 units on a scale Standard Deviation 0.29	-0.06 units on a scale Standard Deviation 0.27	—
Change From Baseline in the European Quality of Life-5 Dimensions (EQ-5D) Utility Index Score Cycle 4, Day 1	0.04 units on a scale Standard Deviation 0.31	-0.07 units on a scale Standard Deviation 0.29	—
Change From Baseline in the European Quality of Life-5 Dimensions (EQ-5D) Utility Index Score Cycle 5, Day 1	0.01 units on a scale Standard Deviation 0.32	-0.04 units on a scale Standard Deviation 0.26	—
Change From Baseline in the European Quality of Life-5 Dimensions (EQ-5D) Utility Index Score Cycle 6, Day 1	0.03 units on a scale Standard Deviation 0.31	-0.12 units on a scale Standard Deviation 0.19	—

SECONDARY outcome

Timeframe: Assessed on Day 1 of the first 6 treatment cycles.

Population: PRO population

Time to worsening in quality of life domains was calculated as the time from Baseline to the first worsened minimally important difference (MID), defined as the smallest change in a QOL score considered important to patients that would lead the patient or clinician to consider a change in therapy. MID thresholds were calculated in Standard Error of Measurement (SEM) units using the Baseline QOL data. Based on the MID, participants were classified as worsened according to the following: For the EORTC QLQ-C30 global health status and functional scales and the EQ-5D health utility score, participants were classified as worsened if their change from Baseline score was less than -1 SEM. For the EORTC QLQ-C30 symptom scores (fatigue and pain) and EORTC QLQ-MY20 disease symptoms and side effects scales, participants were classified as worsened if their change from Baseline score was greater than 1 SEM. See previous outcome measures for definitions of each scale.

Outcome measures

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=289 Participants Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=144 Participants Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression.	HD-Dex / Pomalidomide Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Time to First Worsening of Quality of Life (QOL) Domains Pain	92 days Interval 86.0 to 147.0	85 days Interval 62.0 to 337.0	—
Time to First Worsening of Quality of Life (QOL) Domains Global Health Status	71 days Interval 60.0 to 92.0	57 days Interval 36.0 to 91.0	—
Time to First Worsening of Quality of Life (QOL) Domains Physical Functioning	128 days Interval 92.0 to 225.0	67 days Interval 57.0 to 106.0	—
Time to First Worsening of Quality of Life (QOL) Domains Emotional Functioning	146 days Interval 120.0 to 259.0	85 days Interval 57.0 to 124.0	—
Time to First Worsening of Quality of Life (QOL) Domains Fatigue	58 days Interval 57.0 to 85.0	57 days Interval 46.0 to 67.0	—
Time to First Worsening of Quality of Life (QOL) Domains Disease Symptoms	127 days Interval 92.0 to 155.0	106 days Interval 67.0 to 141.0	—
Time to First Worsening of Quality of Life (QOL) Domains Side Effects of Treatment	90 days Interval 78.0 to 123.0	85 days Interval 58.0 to 113.0	—
Time to First Worsening of Quality of Life (QOL) Domains Health Utility	225 days Interval 123.0 to 338.0	162 days Interval 85.0 to Could not be calculated due to a low number of events	—

Adverse Events

Pomalidomide Plus Low-Dose Dexamethasone

Serious events: 195 serious events

Other events: 291 other events

Deaths: 252 deaths

High-Dose Dexamethasone

Serious events: 80 serious events

Other events: 143 other events

Deaths: 124 deaths

HD-Dex / Pomalidomide

Serious events: 4 serious events

Other events: 11 other events

Deaths: 8 deaths

Serious adverse events

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=300 participants at risk Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=150 participants at risk Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression, or until cross-over to pomalidomide. Data are up to the time of cross-over.	HD-Dex / Pomalidomide n=11 participants at risk Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Cardiac disorders Cardiac failure acute	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Cardiac failure congestive	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Cardio-respiratory arrest	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Ischaemic cardiomyopathy	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Groin pain	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Intervertebral disc compression	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Anaemia	3.3% 10/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.7% 7/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Blood disorder	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Febrile neutropenia	6.3% 19/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Haemorrhagic anaemia	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Hyperviscosity syndrome	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Neutropenia	3.3% 10/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Pancytopenia	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Joint swelling	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Thrombocytopenia	2.0% 6/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Angina pectoris	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Atrial fibrillation	2.3% 7/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Atrial flutter	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Atrial tachycardia	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Cardiac amyloidosis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Cardiac arrest	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Cardiac failure	1.3% 4/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Myocardial infarction	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Myocardial ischaemia	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Sinus bradycardia	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Sinus node dysfunction	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Tachycardia	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Ventricular tachycardia	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Ear and labyrinth disorders Otorrhoea	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Eye disorders Blepharitis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Eye disorders Diplopia	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Abdominal pain	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Constipation	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Dental caries	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Diarrhoea	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Enteritis	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Gastrointestinal haemorrhage	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Haemorrhoids	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Incarcerated inguinal hernia	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Large intestine perforation	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Melaena	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Necrotising colitis	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Oesophagitis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Papilla of Vater stenosis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Retroperitoneal haemorrhage	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Stomatitis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Vomiting	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Adverse drug reaction	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Asthenia	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Catheter site haemorrhage	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Fatigue	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders General physical health deterioration	8.7% 26/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	8.0% 12/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Hyperthermia	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Malaise	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Multiple organ dysfunction syndrome	1.3% 4/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Non-cardiac chest pain	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Oedema peripheral	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Pain	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Performance status decreased	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Pyrexia	8.7% 26/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.7% 7/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Sudden death	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Hepatobiliary disorders Cholestasis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Hepatobiliary disorders Gallbladder perforation	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Hepatobiliary disorders Hepatic mass	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Muscular weakness	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Abscess limb	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Acute sinusitis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Anal abscess	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Aspergillus infection	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Bacteraemia	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Bacterial diarrhoea	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Bacterial infection	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Bacterial sepsis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Bronchitis	2.7% 8/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Bronchopulmonary aspergillosis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Cellulitis	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Conjunctivitis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Cytomegalovirus chorioretinitis	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Device related infection	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Device related sepsis	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Diverticulitis	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Enterobacter infection	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Enterobacter sepsis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Erysipelas	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Escherichia infection	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Escherichia sepsis	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Escherichia urinary tract infection	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Gastroenteritis	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Gastroenteritis salmonella	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Herpes zoster	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Infection	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Infective exacerbation of chronic obstructive airways disease	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Influenza	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Intervertebral discitis	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Klebsiella sepsis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Listeria sepsis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Lower respiratory tract infection	2.0% 6/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Lung infection	1.7% 5/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Meningitis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Arthritis reactive	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Meningitis cryptococcal	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Neutropenic sepsis	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Ophthalmic herpes simplex	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Ophthalmic herpes zoster	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pneumococcal bacteraemia	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pneumocystis jirovecii pneumonia	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pneumonia	19.0% 57/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.3% 14/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	18.2% 2/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pneumonia bacterial	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pneumonia pneumococcal	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pneumonia pseudomonal	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pneumonia respiratory syncytial viral	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pneumonia staphylococcal	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pneumonia streptococcal	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Progressive multifocal leukoencephalopathy	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pseudomonal bacteraemia	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pseudomonal sepsis	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Respiratory syncytial virus infection	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Back pain	2.7% 8/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Respiratory tract infection	1.3% 4/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Salmonella sepsis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Sepsis	2.3% 7/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.0% 3/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Sepsis syndrome	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Septic arthritis streptococcal	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Septic shock	1.3% 4/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.0% 6/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Sialoadenitis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Bone pain	3.3% 10/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Sinusitis	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Skin infection	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Spinal cord infection	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Streptococcal infection	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Streptococcal sepsis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Subcutaneous abscess	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Subdural empyema	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Tooth infection	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Upper respiratory tract infection	2.3% 7/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Urinary tract infection	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	3.3% 5/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Urosepsis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Femoral neck fracture	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Femur fracture	1.7% 5/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Hip fracture	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Humerus fracture	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Lumbar vertebral fracture	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Overdose	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Pelvic fracture	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Post procedural haematoma	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Rib fracture	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Spinal compression fracture	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Subdural haematoma	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Investigations Blood creatinine increased	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Investigations Blood immunoglobulin M increased	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Investigations C-reactive protein increased	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Investigations Platelet count decreased	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Cachexia	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Decreased appetite	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Dehydration	1.3% 4/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Diabetic ketoacidosis	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Hypercalcaemia	4.3% 13/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	3.3% 5/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Hyperglycaemia	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.0% 3/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Hyperuricaemia	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Hypokalaemia	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Hyponatraemia	1.3% 4/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Musculoskeletal chest pain	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Musculoskeletal pain	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Myalgia	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Myopathy	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Neck pain	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Osteoarthritis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Osteonecrosis of jaw	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Pain in extremity	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Pain in jaw	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Pathological fracture	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Spinal pain	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Neoplasms benign, malignant and unspecified (incl cysts and polyps) Basal cell carcinoma	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Neoplasms benign, malignant and unspecified (incl cysts and polyps) Plasma cell leukaemia	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Neoplasms benign, malignant and unspecified (incl cysts and polyps) Plasma cell myeloma	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Neoplasms benign, malignant and unspecified (incl cysts and polyps) Plasmacytoma	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Neoplasms benign, malignant and unspecified (incl cysts and polyps) Prostate cancer stage IV	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Neoplasms benign, malignant and unspecified (incl cysts and polyps) Squamous cell carcinoma of skin	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Neoplasms benign, malignant and unspecified (incl cysts and polyps) Tumour pain	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Cerebral haemorrhage	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Cerebrovascular accident	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Cognitive disorder	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Coma	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Depressed level of consciousness	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Dizziness	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Dyspraxia	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Encephalopathy	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Epilepsy	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Headache	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Hemiparesis	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Ischaemic cerebral infarction	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Loss of consciousness	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Neurological decompensation	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Parkinson's disease	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Partial seizures	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Post herpetic neuralgia	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Presyncope	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Radiculopathy	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Seizure	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Spinal cord compression	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Subarachnoid haemorrhage	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Syncope	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Transient ischaemic attack	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Vertigo CNS origin	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Psychiatric disorders Aggression	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Psychiatric disorders Bradyphrenia	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Psychiatric disorders Confusional state	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.0% 3/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Psychiatric disorders Delirium	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Renal and urinary disorders Acute kidney injury	3.7% 11/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.7% 7/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Renal and urinary disorders Crush syndrome	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Renal and urinary disorders Renal failure	2.7% 8/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Renal and urinary disorders Renal impairment	1.3% 4/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Renal and urinary disorders Urinary retention	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Acute pulmonary oedema	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Atelectasis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Chronic obstructive pulmonary disease	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Cough	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Dyspnoea	3.0% 9/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Epistaxis	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Lung disorder	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Lung infiltration	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Oropharyngeal pain	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Pneumonitis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Productive cough	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Pulmonary embolism	1.7% 5/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Pulmonary oedema	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Respiratory failure	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Skin and subcutaneous tissue disorders Acute febrile neutrophilic dermatosis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Vascular disorders Axillary vein thrombosis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Vascular disorders Circulatory collapse	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Vascular disorders Deep vein thrombosis	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Vascular disorders Hypertension	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Vascular disorders Hypertensive crisis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Vascular disorders Hypotension	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.

Other adverse events

Measure	Pomalidomide Plus Low-Dose Dexamethasone n=300 participants at risk Participants received 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle and 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1, 8, 15, and 22 of a 28-day cycle until disease progression.	High-Dose Dexamethasone n=150 participants at risk Participants received 40 mg dexamethasone (participants \> 75 years of age received 20 mg dexamethasone) administered by mouth once per day on Days 1 through 4, 9 through 12, and 17 through 20 of a 28-day cycle until disease progression, or until cross-over to pomalidomide. Data are up to the time of cross-over.	HD-Dex / Pomalidomide n=11 participants at risk Participants initially randomized to high-dose dexamethasone (HD-Dex) crossed over to receive 4 mg pomalidomide administered by mouth on Days 1-21 of each 28-day treatment cycle, with or without low-dose dexamethasone (40 mg for participants ≤ 75 years or 20 mg for participants \> 75 years of age, administered orally once per day on Days 1, 8, 15, and 22 of each 28-day cycle) at the discretion of the investigator. Data include AEs that occurred after cross-over to pomalidomide.
Blood and lymphatic system disorders Anaemia	53.0% 159/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	51.3% 77/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	36.4% 4/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Leukopenia	13.3% 40/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	5.3% 8/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Lymphopenia	4.3% 13/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	5.3% 8/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Neutropenia	51.7% 155/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	20.0% 30/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	45.5% 5/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Blood and lymphatic system disorders Thrombocytopenia	29.0% 87/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	28.0% 42/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Cardiac disorders Palpitations	2.3% 7/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Ear and labyrinth disorders Ear pain	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Endocrine disorders Adrenal insufficiency	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Eye disorders Cataract	2.7% 8/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Eye disorders Macular pigmentation	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Abdominal pain upper	2.7% 8/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.0% 3/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Constipation	24.0% 72/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	14.7% 22/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Diarrhoea	24.3% 73/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	17.3% 26/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	27.3% 3/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Epigastric discomfort	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Mouth ulceration	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Nausea	19.0% 57/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	10.7% 16/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	27.3% 3/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Parotid gland enlargement	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Gastrointestinal disorders Vomiting	8.3% 25/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.0% 6/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Asthenia	17.7% 53/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	16.7% 25/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Chest pain	3.7% 11/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Chills	6.0% 18/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Fatigue	34.3% 103/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	26.7% 40/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	27.3% 3/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders General physical health deterioration	5.7% 17/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	3.3% 5/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Influenza like illness	1.0% 3/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	18.2% 2/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Malaise	3.3% 10/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Oedema	3.0% 9/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.7% 7/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Oedema peripheral	17.0% 51/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	10.0% 15/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	27.3% 3/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
General disorders Pyrexia	24.7% 74/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	20.7% 31/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	27.3% 3/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Hepatobiliary disorders Cholelithiasis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Bronchitis	11.3% 34/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.7% 7/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Cellulitis	2.0% 6/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Herpes zoster	2.0% 6/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Nasopharyngitis	10.0% 30/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Pneumonia	6.3% 19/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	3.3% 5/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Respiratory tract infection	5.0% 15/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	3.3% 5/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Sinusitis	3.3% 10/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Tooth abscess	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Upper respiratory tract infection	15.7% 47/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	6.7% 10/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	18.2% 2/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Urinary tract infection	6.0% 18/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.0% 6/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	18.2% 2/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Infections and infestations Wound infection	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Chillblains	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Contusion	1.7% 5/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Fall	3.3% 10/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Jaw fracture	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Ligament sprain	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Post-traumatic pain	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Rib fracture	2.3% 7/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Injury, poisoning and procedural complications Skin abrasion	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Investigations Blood creatinine increased	6.0% 18/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.0% 6/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	18.2% 2/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Investigations Blood thyroid stimulating hormone increased	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Investigations Neutrophil count decreased	6.3% 19/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Investigations Weight decreased	5.0% 15/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	3.3% 5/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	18.2% 2/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Investigations White blood cell count decreased	3.3% 10/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Decreased appetite	13.3% 40/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	6.7% 10/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	27.3% 3/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Dehydration	4.7% 14/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	5.3% 8/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Hypercalcaemia	3.7% 11/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	7.3% 11/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Hyperglycaemia	6.0% 18/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	6.7% 10/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Hypocalcaemia	4.7% 14/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	6.0% 9/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Metabolism and nutrition disorders Hypokalaemia	10.3% 31/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	8.0% 12/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Arthralgia	9.3% 28/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.7% 7/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Back pain	19.7% 59/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	15.3% 23/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	18.2% 2/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Bone pain	18.0% 54/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	13.3% 20/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	18.2% 2/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Coccydynia	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Muscle spasms	15.7% 47/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	7.3% 11/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Muscular weakness	3.7% 11/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	12.0% 18/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	18.2% 2/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Musculoskeletal chest pain	4.0% 12/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.0% 3/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Musculoskeletal pain	6.0% 18/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	3.3% 5/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Myalgia	4.0% 12/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Myopathy	1.3% 4/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	7.3% 11/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Osteolysis	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Musculoskeletal and connective tissue disorders Pain in extremity	7.0% 21/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	6.0% 9/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Amnesia	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Burning sensation	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Carpal tunnel syndrome	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Dizziness	13.3% 40/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	8.7% 13/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Headache	9.3% 28/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	6.0% 9/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Lethargy	3.0% 9/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Neuropathy peripheral	3.0% 9/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Paraesthesia	4.0% 12/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.0% 6/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Peripheral sensory neuropathy	8.7% 26/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	18.2% 2/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Nervous system disorders Tremor	6.3% 19/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Psychiatric disorders Agitation	5.7% 17/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.7% 7/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Psychiatric disorders Anxiety	5.0% 15/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	6.0% 9/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Psychiatric disorders Confusional state	3.3% 10/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	4.7% 7/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Psychiatric disorders Delirium	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Psychiatric disorders Insomnia	12.0% 36/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	21.3% 32/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Renal and urinary disorders Acute kidney injury	1.7% 5/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.0% 3/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Renal and urinary disorders Nocturia	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Reproductive system and breast disorders Gynaecomastia	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Cough	21.3% 64/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	10.0% 15/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Dyspnoea	20.0% 60/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	14.0% 21/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	18.2% 2/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Dyspnoea exertional	6.0% 18/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.0% 3/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Epistaxis	8.7% 26/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	8.7% 13/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Haemoptysis	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Respiratory, thoracic and mediastinal disorders Productive cough	1.7% 5/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Skin and subcutaneous tissue disorders Blister	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Skin and subcutaneous tissue disorders Dry skin	2.7% 8/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.0% 3/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Skin and subcutaneous tissue disorders Erythema	2.7% 8/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Skin and subcutaneous tissue disorders Hyperhidrosis	6.0% 18/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Skin and subcutaneous tissue disorders Hyperkeratosis	0.00% 0/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Skin and subcutaneous tissue disorders Pruritus	7.3% 22/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Skin and subcutaneous tissue disorders Rash	8.3% 25/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.67% 1/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Skin and subcutaneous tissue disorders Rash papular	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Skin and subcutaneous tissue disorders Swelling face	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Vascular disorders Haematoma	3.0% 9/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Vascular disorders Hot flush	0.67% 2/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	1.3% 2/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Vascular disorders Hypotension	4.3% 13/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	2.7% 4/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.
Vascular disorders Thrombophlebitis	0.33% 1/300 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	0.00% 0/150 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.	9.1% 1/11 • From first dose of study drug through to 30 days after the last dose as of the end of the study (29 August 2017); maximum time on treatment was 297, 269, and 239 weeks in the Pomalidomide + LD-Dex, HD-Dex, and cross-over groups respectively.

Additional Information

Associate Director, Clinical Trials Disclosure

Celgene Corporation

Phone: 1-888-260-1599

Results disclosure agreements

• Principal investigator is a sponsor employee Institution may publish the results of its findings if a multicenter publication is not forthcoming within 18 months after study completion. Institution shall provide Celgene with a copy of the papers prior to submission; Celgene shall complete its review within 60 days after receipt. Upon Celgene's request, proposed publication or presentation will be delayed up to 60 additional days to enable Celgene to secure adequate intellectual property protection of patentable material.
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Restriction type: OTHER