Trial Outcomes & Findings for Study of Sotatercept for the Treatment of Anemia in low-or Intermediate-1 Risk Myelodysplastic Syndromes (MDS) or Non-proliferative Chronic Myelomonocytic Leukemia (CMML) (NCT NCT01736683)

NCT ID: NCT01736683

Last Updated: 2022-10-24

Results Overview

The responder rate includes non-transfusion dependent efficacy (NTDE) participants and transfusion dependent efficacy (TDE) participants. For non-transfusion dependence efficacy (NTDE) participants who required \< 4 units of RBCs in the 8 weeks prior to start of therapy, HI-E was defined as an increase of \>=1.5 g/dL hemoglobin sustained for 56 days over a period of \>=8 weeks. For transfusion dependence efficacy (TDE) participants who required \>=4 units of RBCs in the 8 weeks prior to start of therapy, HI-E was defined as a decrease of \>= 4 units of RBCs transfused sustained for 56 days over a period of 8 weeks.

Recruitment status

COMPLETED

Study phase

PHASE2

Target enrollment

74 participants

Primary outcome timeframe

Day 2 to Day 142

Results posted on

2022-10-24

Participant Flow

Participants were stratified by concentration of serum erythropoietin (EPO) (\<500 versus ≥500 IU/L), by number of transfusions within 56 days of study enrollment (\<4 versus ≥4 units of red blood cells) and assigned randomly to 0.1 mg/kg and 0.3 mg/kg arms.

Enrollment in the other arms (sotatercept 0.5, 1.0 and 2.0 mg/kg arms) commenced after the Steering Committee approved the higher doses based on the safety of preceding doses.

Participant milestones

Participant milestones
Measure
Sotatercept 0.1 mg/kg
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Overall Study
STARTED
7
6
21
35
5
Overall Study
COMPLETED
0
0
0
0
0
Overall Study
NOT COMPLETED
7
6
21
35
5

Reasons for withdrawal

Reasons for withdrawal
Measure
Sotatercept 0.1 mg/kg
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Overall Study
Disease Relapse
0
0
2
1
0
Overall Study
Adverse Event
0
2
2
3
2
Overall Study
Withdrawal by Subject
0
0
3
1
1
Overall Study
Lack of Therapeutic Effect
7
4
13
20
1
Overall Study
Progressive Disease
0
0
0
1
0
Overall Study
Other
0
0
1
9
1

Baseline Characteristics

Study of Sotatercept for the Treatment of Anemia in low-or Intermediate-1 Risk Myelodysplastic Syndromes (MDS) or Non-proliferative Chronic Myelomonocytic Leukemia (CMML)

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Sotatercept 0.1 mg/kg
n=7 Participants
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=6 Participants
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=21 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=35 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=5 Participants
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Total
n=74 Participants
Total of all reporting groups
Age, Continuous
67 years
STANDARD_DEVIATION 8.3 • n=93 Participants
75 years
STANDARD_DEVIATION 6.9 • n=4 Participants
69 years
STANDARD_DEVIATION 8.0 • n=27 Participants
71 years
STANDARD_DEVIATION 8.2 • n=483 Participants
69 years
STANDARD_DEVIATION 13.0 • n=36 Participants
70 years
STANDARD_DEVIATION 8.4 • n=10 Participants
Age, Customized
<65 years
3 Participants
n=93 Participants
0 Participants
n=4 Participants
7 Participants
n=27 Participants
6 Participants
n=483 Participants
1 Participants
n=36 Participants
17 Participants
n=10 Participants
Age, Customized
>=65 - <75 years
2 Participants
n=93 Participants
3 Participants
n=4 Participants
8 Participants
n=27 Participants
17 Participants
n=483 Participants
2 Participants
n=36 Participants
32 Participants
n=10 Participants
Age, Customized
>=75 years
2 Participants
n=93 Participants
3 Participants
n=4 Participants
6 Participants
n=27 Participants
12 Participants
n=483 Participants
2 Participants
n=36 Participants
25 Participants
n=10 Participants
Sex: Female, Male
Female
3 Participants
n=93 Participants
0 Participants
n=4 Participants
4 Participants
n=27 Participants
17 Participants
n=483 Participants
4 Participants
n=36 Participants
28 Participants
n=10 Participants
Sex: Female, Male
Male
4 Participants
n=93 Participants
6 Participants
n=4 Participants
17 Participants
n=27 Participants
18 Participants
n=483 Participants
1 Participants
n=36 Participants
46 Participants
n=10 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
n=93 Participants
0 Participants
n=4 Participants
2 Participants
n=27 Participants
0 Participants
n=483 Participants
0 Participants
n=36 Participants
2 Participants
n=10 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
7 Participants
n=93 Participants
6 Participants
n=4 Participants
13 Participants
n=27 Participants
19 Participants
n=483 Participants
4 Participants
n=36 Participants
49 Participants
n=10 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
n=93 Participants
0 Participants
n=4 Participants
6 Participants
n=27 Participants
16 Participants
n=483 Participants
1 Participants
n=36 Participants
23 Participants
n=10 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=93 Participants
0 Participants
n=4 Participants
0 Participants
n=27 Participants
0 Participants
n=483 Participants
0 Participants
n=36 Participants
0 Participants
n=10 Participants
Race (NIH/OMB)
Asian
0 Participants
n=93 Participants
0 Participants
n=4 Participants
0 Participants
n=27 Participants
0 Participants
n=483 Participants
1 Participants
n=36 Participants
1 Participants
n=10 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=93 Participants
0 Participants
n=4 Participants
0 Participants
n=27 Participants
0 Participants
n=483 Participants
0 Participants
n=36 Participants
0 Participants
n=10 Participants
Race (NIH/OMB)
Black or African American
0 Participants
n=93 Participants
0 Participants
n=4 Participants
0 Participants
n=27 Participants
1 Participants
n=483 Participants
0 Participants
n=36 Participants
1 Participants
n=10 Participants
Race (NIH/OMB)
White
7 Participants
n=93 Participants
6 Participants
n=4 Participants
14 Participants
n=27 Participants
18 Participants
n=483 Participants
3 Participants
n=36 Participants
48 Participants
n=10 Participants
Race (NIH/OMB)
More than one race
NA Participants
n=93 Participants
NA Participants
n=4 Participants
NA Participants
n=27 Participants
NA Participants
n=483 Participants
NA Participants
n=36 Participants
NA Participants
n=10 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=93 Participants
0 Participants
n=4 Participants
7 Participants
n=27 Participants
16 Participants
n=483 Participants
1 Participants
n=36 Participants
24 Participants
n=10 Participants
Region of Enrollment
United States
7 Participants
n=93 Participants
6 Participants
n=4 Participants
15 Participants
n=27 Participants
18 Participants
n=483 Participants
4 Participants
n=36 Participants
50 Participants
n=10 Participants
Region of Enrollment
France
0 Participants
n=93 Participants
0 Participants
n=4 Participants
6 Participants
n=27 Participants
17 Participants
n=483 Participants
1 Participants
n=36 Participants
24 Participants
n=10 Participants
Height
1.70 meters
STANDARD_DEVIATION 0.110 • n=93 Participants
1.75 meters
STANDARD_DEVIATION 0.054 • n=4 Participants
1.70 meters
STANDARD_DEVIATION 0.093 • n=27 Participants
1.68 meters
STANDARD_DEVIATION 0.089 • n=483 Participants
1.56 meters
STANDARD_DEVIATION 0.043 • n=36 Participants
1.68 meters
STANDARD_DEVIATION 0.095 • n=10 Participants
Weight
85.3 kg
STANDARD_DEVIATION 21.79 • n=93 Participants
79.5 kg
STANDARD_DEVIATION 13.90 • n=4 Participants
77.9 kg
STANDARD_DEVIATION 13.97 • n=27 Participants
73.5 kg
STANDARD_DEVIATION 15.55 • n=483 Participants
56.4 kg
STANDARD_DEVIATION 7.25 • n=36 Participants
75.2 kg
STANDARD_DEVIATION 16.14 • n=10 Participants
Erythropoietin level
<=200 mIU/mL
2 Participants
n=93 Participants
3 Participants
n=4 Participants
6 Participants
n=27 Participants
16 Participants
n=483 Participants
2 Participants
n=36 Participants
29 Participants
n=10 Participants
Erythropoietin level
>200 to <=500 mIU/mL
2 Participants
n=93 Participants
1 Participants
n=4 Participants
6 Participants
n=27 Participants
6 Participants
n=483 Participants
0 Participants
n=36 Participants
15 Participants
n=10 Participants
Erythropoietin level
>500 mIU/mL
3 Participants
n=93 Participants
2 Participants
n=4 Participants
9 Participants
n=27 Participants
9 Participants
n=483 Participants
2 Participants
n=36 Participants
25 Participants
n=10 Participants
Erythropoietin level
Missing
0 Participants
n=93 Participants
0 Participants
n=4 Participants
0 Participants
n=27 Participants
4 Participants
n=483 Participants
1 Participants
n=36 Participants
5 Participants
n=10 Participants
Red Blood Cell (RBC) Transfusion Burden Categories
< 4 units (Low Transfusion Burden)
0 Participants
n=93 Participants
0 Participants
n=4 Participants
3 Participants
n=27 Participants
8 Participants
n=483 Participants
1 Participants
n=36 Participants
12 Participants
n=10 Participants
Red Blood Cell (RBC) Transfusion Burden Categories
>= 4 units (High Transfusion Burden)
7 Participants
n=93 Participants
6 Participants
n=4 Participants
18 Participants
n=27 Participants
27 Participants
n=483 Participants
4 Participants
n=36 Participants
62 Participants
n=10 Participants
Number of Previous Erythropoiesis-Stimulating Agents (ESA) Therapies for Myelodysplastic Syndromes
0 ESA therapies
1 Participants
n=93 Participants
0 Participants
n=4 Participants
1 Participants
n=27 Participants
0 Participants
n=483 Participants
0 Participants
n=36 Participants
2 Participants
n=10 Participants
Number of Previous Erythropoiesis-Stimulating Agents (ESA) Therapies for Myelodysplastic Syndromes
1 ESA therapy
6 Participants
n=93 Participants
2 Participants
n=4 Participants
11 Participants
n=27 Participants
23 Participants
n=483 Participants
3 Participants
n=36 Participants
45 Participants
n=10 Participants
Number of Previous Erythropoiesis-Stimulating Agents (ESA) Therapies for Myelodysplastic Syndromes
2 ESA therapies
0 Participants
n=93 Participants
4 Participants
n=4 Participants
8 Participants
n=27 Participants
10 Participants
n=483 Participants
2 Participants
n=36 Participants
24 Participants
n=10 Participants
Number of Previous Erythropoiesis-Stimulating Agents (ESA) Therapies for Myelodysplastic Syndromes
3 ESA therapies
0 Participants
n=93 Participants
0 Participants
n=4 Participants
1 Participants
n=27 Participants
2 Participants
n=483 Participants
0 Participants
n=36 Participants
3 Participants
n=10 Participants
Number of Previous Non-ESA Agents for Myelodysplastic Syndromes (MDS)
0 non-ESA agents
0 Participants
n=93 Participants
0 Participants
n=4 Participants
2 Participants
n=27 Participants
7 Participants
n=483 Participants
2 Participants
n=36 Participants
11 Participants
n=10 Participants
Number of Previous Non-ESA Agents for Myelodysplastic Syndromes (MDS)
1 non-ESA agent
1 Participants
n=93 Participants
0 Participants
n=4 Participants
7 Participants
n=27 Participants
16 Participants
n=483 Participants
1 Participants
n=36 Participants
25 Participants
n=10 Participants
Number of Previous Non-ESA Agents for Myelodysplastic Syndromes (MDS)
2 non-ESA agents
2 Participants
n=93 Participants
1 Participants
n=4 Participants
6 Participants
n=27 Participants
7 Participants
n=483 Participants
1 Participants
n=36 Participants
17 Participants
n=10 Participants
Number of Previous Non-ESA Agents for Myelodysplastic Syndromes (MDS)
3 non-ESA agents
2 Participants
n=93 Participants
1 Participants
n=4 Participants
2 Participants
n=27 Participants
2 Participants
n=483 Participants
1 Participants
n=36 Participants
8 Participants
n=10 Participants
Number of Previous Non-ESA Agents for Myelodysplastic Syndromes (MDS)
4 non-ESA agents
0 Participants
n=93 Participants
1 Participants
n=4 Participants
2 Participants
n=27 Participants
3 Participants
n=483 Participants
0 Participants
n=36 Participants
6 Participants
n=10 Participants
Number of Previous Non-ESA Agents for Myelodysplastic Syndromes (MDS)
5 non-ESA agents
1 Participants
n=93 Participants
1 Participants
n=4 Participants
0 Participants
n=27 Participants
0 Participants
n=483 Participants
0 Participants
n=36 Participants
2 Participants
n=10 Participants
Number of Previous Non-ESA Agents for Myelodysplastic Syndromes (MDS)
>5 non-ESA agents
1 Participants
n=93 Participants
2 Participants
n=4 Participants
2 Participants
n=27 Participants
0 Participants
n=483 Participants
0 Participants
n=36 Participants
5 Participants
n=10 Participants
International Prognostic Scoring System (IPSS) Risk Category
Low - 0
4 Participants
n=93 Participants
4 Participants
n=4 Participants
5 Participants
n=27 Participants
11 Participants
n=483 Participants
0 Participants
n=36 Participants
24 Participants
n=10 Participants
International Prognostic Scoring System (IPSS) Risk Category
Intermediate- 1: 0.5 to 1
3 Participants
n=93 Participants
2 Participants
n=4 Participants
16 Participants
n=27 Participants
24 Participants
n=483 Participants
5 Participants
n=36 Participants
50 Participants
n=10 Participants
International Prognostic Scoring System (IPSS) Risk Category
Intermediate- 2: 1.5 to 2
0 Participants
n=93 Participants
0 Participants
n=4 Participants
0 Participants
n=27 Participants
0 Participants
n=483 Participants
0 Participants
n=36 Participants
0 Participants
n=10 Participants
International Prognostic Scoring System (IPSS) Risk Category
High: >= 2.5
0 Participants
n=93 Participants
0 Participants
n=4 Participants
0 Participants
n=27 Participants
0 Participants
n=483 Participants
0 Participants
n=36 Participants
0 Participants
n=10 Participants
Erythropoietin Level
<=200 mIU/mL
2 Participants
n=93 Participants
3 Participants
n=4 Participants
6 Participants
n=27 Participants
16 Participants
n=483 Participants
2 Participants
n=36 Participants
29 Participants
n=10 Participants
Erythropoietin Level
>200 to <=500 mIU/mL
2 Participants
n=93 Participants
1 Participants
n=4 Participants
6 Participants
n=27 Participants
6 Participants
n=483 Participants
0 Participants
n=36 Participants
15 Participants
n=10 Participants
Erythropoietin Level
>500 mIU/mL
3 Participants
n=93 Participants
2 Participants
n=4 Participants
9 Participants
n=27 Participants
9 Participants
n=483 Participants
2 Participants
n=36 Participants
25 Participants
n=10 Participants
Erythropoietin Level
Missing
0 Participants
n=93 Participants
0 Participants
n=4 Participants
0 Participants
n=27 Participants
4 Participants
n=483 Participants
1 Participants
n=36 Participants
5 Participants
n=10 Participants

PRIMARY outcome

Timeframe: Day 2 to Day 142

Population: Efficacy Evaluable Population: all participants who take at least one dose of study medication and have baseline and at least one post-baseline assessment of efficacy without major deviation from protocol.

The responder rate includes non-transfusion dependent efficacy (NTDE) participants and transfusion dependent efficacy (TDE) participants. For non-transfusion dependence efficacy (NTDE) participants who required \< 4 units of RBCs in the 8 weeks prior to start of therapy, HI-E was defined as an increase of \>=1.5 g/dL hemoglobin sustained for 56 days over a period of \>=8 weeks. For transfusion dependence efficacy (TDE) participants who required \>=4 units of RBCs in the 8 weeks prior to start of therapy, HI-E was defined as a decrease of \>= 4 units of RBCs transfused sustained for 56 days over a period of 8 weeks.

Outcome measures

Outcome measures
Measure
Sotatercept 0.1 mg/kg
n=7 Participants
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=6 Participants
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=21 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=35 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=5 Participants
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Percentage of Participants With Erythroid Hematological Improvement (HI-E) Starting Before the Completion of Five Cycles of Treatment (Responder Rate)
All participants
0 percentage of participants
66.7 percentage of participants
42.9 percentage of participants
60.0 percentage of participants
40.0 percentage of participants
Percentage of Participants With Erythroid Hematological Improvement (HI-E) Starting Before the Completion of Five Cycles of Treatment (Responder Rate)
NTDE subpopulation
33.3 percentage of participants
62.5 percentage of participants
100 percentage of participants
Percentage of Participants With Erythroid Hematological Improvement (HI-E) Starting Before the Completion of Five Cycles of Treatment (Responder Rate)
TDE subpopulation
0 percentage of participants
66.7 percentage of participants
44.4 percentage of participants
59.3 percentage of participants
25.0 percentage of participants

SECONDARY outcome

Timeframe: Day 1 to Day 87

Population: Efficacy Evaluable Population of participants who responded

Time to first response = start date of first response (HI-E) - first dose date + 1 day. For NTDE participants (who required \< 4 units of RBCs in the 8 weeks prior to start of therapy), HI-E was defined as an increase of \>=1.5 g/dL hemoglobin sustained for 56 days over a period of \>=8 weeks. For TDE participants (who required \>=4 units of RBCs in the 8 weeks prior to start of therapy), HI-E was defined as a decrease of \>= 4 units of RBCs transfused sustained for 56 days over a period of 8 weeks.

Outcome measures

Outcome measures
Measure
Sotatercept 0.1 mg/kg
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=4 Participants
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=9 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=21 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=2 Participants
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Time to Erythroid Hematological Improvement (HI-E) Response
TDE subpopulation
24.0 days
Interval 2.0 to 44.0
1.5 days
Interval 1.0 to 2.0
1.5 days
Interval 1.0 to 86.0
87 days
Interval 87.0 to 87.0
Time to Erythroid Hematological Improvement (HI-E) Response
All participants
24.0 days
Interval 2.0 to 44.0
1.0 days
Interval 1.0 to 2.0
1.0 days
Interval 1.0 to 86.0
48 days
Interval 9.0 to 87.0
Time to Erythroid Hematological Improvement (HI-E) Response
NTDE subpopulation
1.0 days
Interval 1.0 to 1.0
1.0 days
Interval 1.0 to 52.0
9.0 days
Interval 9.0 to 9.0

SECONDARY outcome

Timeframe: Day 1 to 183.7 weeks

Population: Efficacy Evaluable Population of participants who responded

The duration of HI-E response for participants who responded was (the last date of the consecutive hemoglobin \[Hgb\] measurements of the first \>=56 day interval) - (the first date of the consecutive Hgb measurements of the first \>=56 day interval) + 1 day.

Outcome measures

Outcome measures
Measure
Sotatercept 0.1 mg/kg
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=4 Participants
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=9 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=21 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=2 Participants
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Duration of Erythroid Hematological Improvement (HI-E)
All participants
62.5 days
Interval 62.0 to 69.0
104.0 days
Interval 56.0 to 1794.0
133.0 days
Interval 58.0 to 1554.0
96.0 days
Interval 58.0 to 134.0
Duration of Erythroid Hematological Improvement (HI-E)
TDE subpopulation
62.5 days
Interval 62.0 to 69.0
105.5 days
Interval 56.0 to 1794.0
96.5 days
Interval 58.0 to 1033.0
58.0 days
Interval 58.0 to 58.0
Duration of Erythroid Hematological Improvement (HI-E)
NTDE subpopulation
79.0 days
Interval 79.0 to 79.0
1043.0 days
Interval 69.0 to 1554.0
134.0 days
Interval 134.0 to 134.0

SECONDARY outcome

Timeframe: Day 1 to 183.7 weeks

Population: Efficacy Evaluable Population of participants who progressed to AML

Progression to AML used criteria by the International Working Group (IWG) Response Criteria in Myelodysplasia (Cheson, 2006). Progression is considered if any of the following are met: - \>=50% increase in blasts - \>=50% decrement from maximum remission/response levels in granulocytes or platelets - Reduction in Hgb concentration by \>=2 g/dL - Transfusion dependence This outcome was defined as a Kaplan-Meier estimate however few participants progressed so a Kaplan-Meier analysis could not be performed. Disclosed are time to progression values only for participants who did progress to AML.

Outcome measures

Outcome measures
Measure
Sotatercept 0.1 mg/kg
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=1 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=1 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Time to Progression to Acute Myeloid Leukemia (AML) for Participants Who Had Progression
45.6 weeks
78.0 weeks

SECONDARY outcome

Timeframe: Day 1 to 257.3 weeks

Population: Efficacy Evaluable Population of participants who progressed to high risk MDS categories

Progression to events of higher risk MDS used criteria from the International Prognostic Scoring System for MDS (IPSS) which assigns a prognostic score (0=good and increasing in risk by half-grades with the top score outlined below) for three prognostic variables: - Marrow blasts (score 0-2.0) - Karyotype (score 0-1.0) - Cytopenias: neutrophil, platelets, and Hg counts (score 0-0.5) The three individual scores are summed resulting in a full range of 0- 3.5 and placed into risk categories 0 = low risk 0.5-1.0 = intermediate-1 risk 1.5-2.0 = intermediate-2 risk \>=2.5 = high risk This outcome was defined as a Kaplan-Meier estimate however few participants progressed so a Kaplan-Meier analysis could not be performed. Data reported represent event times (weeks) for participants who did progress to higher risk MDS categories.

Outcome measures

Outcome measures
Measure
Sotatercept 0.1 mg/kg
n=1 Participants
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=1 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=1 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Time to Progression to Events of Higher Risk Myelodysplastic Syndromes (MDS) Using the International Prognostic Scoring System (IPSS) For Participants Who Had Progression
15.1 weeks
24.7 weeks
67.4 weeks

SECONDARY outcome

Timeframe: Day 1 to 257.3 weeks

Population: Efficacy Evaluable Population

Participants who had disease progression were considered to have events. Participants who died without acute myeloid leukemia (AML) were also considered to have events with the event date as the date of death. Those who did not have disease progression and who were lost to follow-up were censored at the last known disease progression assessment date. Participants without disease progression at the last follow-up contact were censored at the date of the last follow-up contact date. Disease Progression to AML used criteria by the International Working Group (IWG) Response Criteria in Myelodysplasia (Cheson, 2006). Progression is considered if any of the following are met: - \>=50% increase in blasts - \>=50% decrement from maximum remission/response levels in granulocytes or platelets - Reduction in hemoglobin (Hgb) concentration by \>=2 g/dL - Transfusion dependence

Outcome measures

Outcome measures
Measure
Sotatercept 0.1 mg/kg
n=7 Participants
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=6 Participants
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=21 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=35 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=5 Participants
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Kaplan-Meier Estimates for Progression-free Survival
82.7 weeks
Interval 15.1 to 82.7
NA weeks
Interval 91.1 to
not enough events to allow for calculation
NA weeks
Interval 58.6 to
not enough events to allow for calculation
NA weeks
not enough events to allow for calculation
NA weeks
Interval 79.9 to
not enough events to allow for calculation

SECONDARY outcome

Timeframe: Day 1 to 257.3 weeks

Population: Efficacy Evaluable Population

OS was defined as the time between start of treatment and the death/censored date. Participants who died (regardless of the cause of death) were considered to have an event. Participants who were alive at the end of the study, and participants who were lost to follow-up, were censored at the last date when subjects were known to be alive.

Outcome measures

Outcome measures
Measure
Sotatercept 0.1 mg/kg
n=7 Participants
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=6 Participants
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=21 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=35 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=5 Participants
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Kaplan-Meier Estimates for Overall Survival (OS)
82.7 weeks
not enough events to allow for calculation
NA weeks
Interval 91.0 to
not enough events to allow for calculation
NA weeks
Interval 58.6 to
not enough events to allow for calculation
NA weeks
not enough events to allow for calculation
NA weeks
Interval 79.1 to
not enough events to allow for calculation

SECONDARY outcome

Timeframe: Cycle 1 Day 8 and !5 up to Cycle 2 Day 1

Population: Pharmacokinetic (PK) population includes participants with a sufficient amount of post-dose quantifiable PK sotatercept profile.

Maximum observed serum concentration, obtained directly from the observed concentration versus time data.

Outcome measures

Outcome measures
Measure
Sotatercept 0.1 mg/kg
n=7 Participants
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=6 Participants
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=21 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=35 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=5 Participants
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Pharmacokinetic Parameters of Sotatercept: Serum Concentration at Various Study Timepoints
Cycle 1 Day 15
240.31 ng/mL
Geometric Coefficient of Variation 75.32
1207.68 ng/mL
Geometric Coefficient of Variation 16.14
1869.52 ng/mL
Geometric Coefficient of Variation 36.97
5149.74 ng/mL
Geometric Coefficient of Variation 36.04
8303.73 ng/mL
Geometric Coefficient of Variation 43.57
Pharmacokinetic Parameters of Sotatercept: Serum Concentration at Various Study Timepoints
Cycle 1 Day 8
288.06 ng/mL
Geometric Coefficient of Variation 70.94
1426.00 ng/mL
Geometric Coefficient of Variation 27.76
2237.46 ng/mL
Geometric Coefficient of Variation 40.77
6525.37 ng/mL
Geometric Coefficient of Variation 28.31
12886.14 ng/mL
Geometric Coefficient of Variation 30.47
Pharmacokinetic Parameters of Sotatercept: Serum Concentration at Various Study Timepoints
Cycle 2 Day 1
252.20 ng/mL
Geometric Coefficient of Variation 28.43
957.58 ng/mL
Geometric Coefficient of Variation 18.63
1323.91 ng/mL
Geometric Coefficient of Variation 44.40
3467.58 ng/mL
Geometric Coefficient of Variation 57.06
5329.63 ng/mL
Geometric Coefficient of Variation 38.27

SECONDARY outcome

Timeframe: Day 1 up to 59.2 months

Population: Safety population: all participants who receive at least one dose of study medication.

An adverse event (AE) is any noxious, unintended, or untoward medical occurrence that may appear or worsen in a subject during the course of a study. Treatment-emergent adverse events (TEAEs) are defined as any AE occurring or worsening on or after the first treatment of the study medication and within 42 days after the last dose. The severity of AEs was graded based on National Cancer Institute Common Terminology Criteria for Adverse Events (NCI-CTCAE), Version 4.0 and the scale: Grade 1 = Mild Grade 2 = Moderate Grade 3 = Severe Grade 4 = Life threatening Grade 5 = Death. Relation to study drug was determined by the investigator. A treatment-related TEAE is defined as TEAE which was considered to be related to the study drug and reported as 'Suspected' on the CRF. AEs with a missing relationship were treated as 'treatment-related' in data summaries.

Outcome measures

Outcome measures
Measure
Sotatercept 0.1 mg/kg
n=7 Participants
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=6 Participants
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=21 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=35 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=5 Participants
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Participants With Treatment-Emergent Adverse Events (TEAE)
>= 1 Treatment-emergent adverse event (TEAE)
6 Participants
4 Participants
20 Participants
34 Participants
5 Participants
Participants With Treatment-Emergent Adverse Events (TEAE)
>=1 Serious TEAE related to treatment
0 Participants
0 Participants
0 Participants
0 Participants
1 Participants
Participants With Treatment-Emergent Adverse Events (TEAE)
>=1 Treatment-related TEAE
2 Participants
3 Participants
7 Participants
18 Participants
4 Participants
Participants With Treatment-Emergent Adverse Events (TEAE)
>=1 Serious TEAE
1 Participants
2 Participants
6 Participants
10 Participants
2 Participants
Participants With Treatment-Emergent Adverse Events (TEAE)
>=1 TEAE severity 3 or 4
1 Participants
2 Participants
9 Participants
13 Participants
2 Participants
Participants With Treatment-Emergent Adverse Events (TEAE)
>=1 TEAE severity grade 3/4 related to treatment
0 Participants
0 Participants
1 Participants
0 Participants
1 Participants
Participants With Treatment-Emergent Adverse Events (TEAE)
>=1 TEAE leading to death
0 Participants
1 Participants
0 Participants
0 Participants
0 Participants
Participants With Treatment-Emergent Adverse Events (TEAE)
>=1 TEAE leading to dose reduction
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
Participants With Treatment-Emergent Adverse Events (TEAE)
>=1 TEAE leading to dose interruption
0 Participants
1 Participants
2 Participants
9 Participants
1 Participants
Participants With Treatment-Emergent Adverse Events (TEAE)
>=1 TEAE leading to dose interruption + reduction
0 Participants
0 Participants
0 Participants
1 Participants
0 Participants
Participants With Treatment-Emergent Adverse Events (TEAE)
>= 1 TEAE leading to drug discontinuation
0 Participants
2 Participants
2 Participants
3 Participants
2 Participants

SECONDARY outcome

Timeframe: Day 1 to 59.2 months

Population: Safety population

The following were DLTs if the investigator suspected they were treatment related: 1. Increase to \>= 140 mmHg systolic blood pressure 2. Increase to \>=90 mmHg diastolic blood pressure 3. Increase to \>=140 systolic and increase \> 20 mmHg compared to baseline systolic 4. Increase to \>=90 mmHg diastolic and increase \> 20 mmHg compared to baseline diastolic 5. Introduction of new anti-hypertension medication during treatment 6. Increase in dose of baseline anti-hypertension medication during treatment 7. \>= Grade 2 (moderate severity or worse) hypertension as an adverse event

Outcome measures

Outcome measures
Measure
Sotatercept 0.1 mg/kg
n=7 Participants
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=6 Participants
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=21 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=35 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=5 Participants
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Dose Limiting Toxicities (DLTs)
3. =140 systolic and increase > 20 mmHg base
0 Participants
1 Participants
5 Participants
10 Participants
2 Participants
Dose Limiting Toxicities (DLTs)
1. Increase to >= 140 mmHg systolic
1 Participants
1 Participants
8 Participants
19 Participants
2 Participants
Dose Limiting Toxicities (DLTs)
2. Increase to >=90 mmHg diastolic
0 Participants
0 Participants
2 Participants
2 Participants
1 Participants
Dose Limiting Toxicities (DLTs)
4. >=90 mmHg diastolic and increase > 20 mmHg base
0 Participants
0 Participants
2 Participants
2 Participants
1 Participants
Dose Limiting Toxicities (DLTs)
5. Introduction of new anti-hypertension med
0 Participants
0 Participants
4 Participants
3 Participants
1 Participants
Dose Limiting Toxicities (DLTs)
6. Incre in dose of baseline anti-hypertension med
0 Participants
0 Participants
0 Participants
0 Participants
0 Participants
Dose Limiting Toxicities (DLTs)
7.>= Grade 2 hypertension TEAE
0 Participants
1 Participants
2 Participants
4 Participants
1 Participants

SECONDARY outcome

Timeframe: Day 2 to Day 142

Population: Efficacy Evaluable Population

Number of participants who achieved RBC-independence was defined as participants who required no RBC-transfusions during a 56-day interval of erythroid hematological improvement (HI-E). NTDE = non-transfusion dependence efficacy participants who required \< 4 units of RBCs in the 8 weeks prior to start of therapy TDE = transfusion dependence efficacy participants who required \>=4 units of RBCs in the 8 weeks prior to start of therapy

Outcome measures

Outcome measures
Measure
Sotatercept 0.1 mg/kg
n=7 Participants
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=6 Participants
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=21 Participants
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=35 Participants
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=5 Participants
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Number of Participants Who Achieved Red Blood Cell (RBC)-Transfusion Independence During the Erythroid Hematological Improvement (HI-E) Interval
All participants
0 Participants
1 Participants
3 Participants
15 Participants
1 Participants
Number of Participants Who Achieved Red Blood Cell (RBC)-Transfusion Independence During the Erythroid Hematological Improvement (HI-E) Interval
NTDE subpopulation
1 Participants
6 Participants
1 Participants
Number of Participants Who Achieved Red Blood Cell (RBC)-Transfusion Independence During the Erythroid Hematological Improvement (HI-E) Interval
TDE subpopulation
0 Participants
1 Participants
2 Participants
9 Participants
0 Participants

Adverse Events

Sotatercept 0.1 mg/kg

Serious events: 1 serious events
Other events: 6 other events
Deaths: 1 deaths

Sotatercept 0.3 mg/kg

Serious events: 2 serious events
Other events: 4 other events
Deaths: 1 deaths

Sotatercept 0.5 mg/kg

Serious events: 6 serious events
Other events: 18 other events
Deaths: 6 deaths

Sotatercept 1.0 mg/kg

Serious events: 10 serious events
Other events: 32 other events
Deaths: 6 deaths

Sotatercept 2.0 mg/kg

Serious events: 2 serious events
Other events: 5 other events
Deaths: 1 deaths

Serious adverse events

Serious adverse events
Measure
Sotatercept 0.1 mg/kg
n=7 participants at risk
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=6 participants at risk
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=21 participants at risk
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/ kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=35 participants at risk
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/ kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=5 participants at risk
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Blood and lymphatic system disorders
Anaemia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Cardiac disorders
Angina pectoris
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Colitis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Large intestine perforation
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
General disorders
Mass
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
General disorders
Non-cardiac chest pain
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
General disorders
Pyrexia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Hepatobiliary disorders
Cholangitis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Hepatobiliary disorders
Cholelithiasis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Bronchitis
14.3%
1/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Clostridium difficile colitis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Escherichia pyelonephritis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Influenza
14.3%
1/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Lung infection
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Peritoneal abscess
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Pneumonia
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Injury, poisoning and procedural complications
Hip fracture
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Injury, poisoning and procedural complications
Spinal compression fracture
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Injury, poisoning and procedural complications
Spinal fracture
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Injury, poisoning and procedural complications
Subdural haematoma
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Injury, poisoning and procedural complications
Transfusion reaction
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Investigations
Blood pressure increased
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Investigations
International normalised ratio increased
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Osteoarthritis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Basal cell carcinoma
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Nervous system disorders
Cerebrovascular accident
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Nervous system disorders
Hemiparesis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Psychiatric disorders
Delirium
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Renal and urinary disorders
Haematuria
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Respiratory, thoracic and mediastinal disorders
Hypoxia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Skin and subcutaneous tissue disorders
Diabetic foot
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Vascular disorders
Aortic stenosis
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Vascular disorders
Hypotension
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months

Other adverse events

Other adverse events
Measure
Sotatercept 0.1 mg/kg
n=7 participants at risk
Sotatercept 0.1 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.3 mg/kg
n=6 participants at risk
Sotatercept 0.3 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to either the 0.1 mg/kg arm or the 0.3 mg/kg arm. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/5 subjects in Cycle 1 in the 0.1 mg/kg and 0.3 mg/kg treatment groups, the 0.5 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 0.5 mg/kg
n=21 participants at risk
Sotatercept 0.5 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 0.5 mg/ kg treatment group, the 1.0 mg/kg treatment group began inclusion in the randomization scheme.
Sotatercept 1.0 mg/kg
n=35 participants at risk
Sotatercept 1.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. Based upon the occurrence of dose-limiting toxicity (DLT) in ≤ 1/6 subjects in Cycle 1 in the 1.0 mg/ kg treatment group, the 2.0 mg/kg treatment group began inclusion in the randomization scheme. Following evaluation of all treatment group data by the Steering Committee, enrollment continued only in the 1.0 mg/kg arm because the arm had the greatest frequency of erythroid hematological improvement (HI-E).
Sotatercept 2.0 mg/kg
n=5 participants at risk
Sotatercept 2.0 mg/kg administered via subcutaneous injection every third week (Q3W). Participants were randomized to one of the active treatment arms. Efficacy and safety data were assessed by a Steering Committee. The 2.0 mg/kg sotatercept dose was reduced to 1.5 mg/kg for ongoing and newly enrolled participants by protocol amendment.
Blood and lymphatic system disorders
Anaemia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Blood and lymphatic system disorders
Haemolytic anaemia
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Blood and lymphatic system disorders
Leukocytosis
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Blood and lymphatic system disorders
Neutropenia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Blood and lymphatic system disorders
Thrombocytopenia
14.3%
1/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Cardiac disorders
Sinus tachycardia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Ear and labyrinth disorders
Ear pain
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Ear and labyrinth disorders
Vertigo
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Eye disorders
Eye haemorrhage
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Eye disorders
Eye inflammation
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Eye disorders
Eyelid oedema
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Eye disorders
Lacrimation increased
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Eye disorders
Vitreous floaters
14.3%
1/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Abdominal discomfort
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Abdominal pain
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
14.3%
5/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Abdominal pain upper
14.3%
1/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
11.4%
4/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Constipation
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
28.6%
6/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Diarrhoea
0.00%
0/7 • Day 1 up to 60.7 months
33.3%
2/6 • Day 1 up to 60.7 months
33.3%
7/21 • Day 1 up to 60.7 months
25.7%
9/35 • Day 1 up to 60.7 months
40.0%
2/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Dry mouth
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Dyspepsia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Nausea
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
19.0%
4/21 • Day 1 up to 60.7 months
22.9%
8/35 • Day 1 up to 60.7 months
40.0%
2/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Salivary gland enlargement
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Stomatitis
14.3%
1/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Toothache
14.3%
1/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Gastrointestinal disorders
Vomiting
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
14.3%
3/21 • Day 1 up to 60.7 months
25.7%
9/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
General disorders
Asthenia
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
14.3%
3/21 • Day 1 up to 60.7 months
20.0%
7/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
General disorders
Chest discomfort
14.3%
1/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
General disorders
Face oedema
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
General disorders
Fatigue
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
28.6%
6/21 • Day 1 up to 60.7 months
31.4%
11/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
General disorders
Gait disturbance
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
General disorders
Influenza like illness
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
General disorders
Injection site reaction
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
General disorders
Oedema
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
General disorders
Oedema peripheral
28.6%
2/7 • Day 1 up to 60.7 months
33.3%
2/6 • Day 1 up to 60.7 months
28.6%
6/21 • Day 1 up to 60.7 months
31.4%
11/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
General disorders
Peripheral swelling
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
General disorders
Pyrexia
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
19.0%
4/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
General disorders
Vessel puncture site swelling
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Immune system disorders
Anaphylactic reaction
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Bronchitis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Laryngitis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Infections and infestations
Nasopharyngitis
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Pharyngitis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Pneumonia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Sinusitis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
11.4%
4/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Tooth infection
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Upper respiratory tract infection
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
14.3%
5/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Infections and infestations
Urinary tract infection
14.3%
1/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
11.4%
4/35 • Day 1 up to 60.7 months
40.0%
2/5 • Day 1 up to 60.7 months
Injury, poisoning and procedural complications
Contusion
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Injury, poisoning and procedural complications
Fall
0.00%
0/7 • Day 1 up to 60.7 months
33.3%
2/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Injury, poisoning and procedural complications
Muscle strain
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Injury, poisoning and procedural complications
Skin abrasion
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Injury, poisoning and procedural complications
Spinal compression fracture
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Injury, poisoning and procedural complications
Tooth fracture
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Investigations
Alanine aminotransferase increased
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
14.3%
3/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Investigations
Aspartate aminotransferase increased
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
19.0%
4/21 • Day 1 up to 60.7 months
14.3%
5/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Investigations
Blood alkaline phosphatase increased
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Investigations
Blood bilirubin increased
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Investigations
Blood creatinine increased
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Investigations
Creatinine renal clearance decreased
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Investigations
Lipase increased
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Investigations
Neutrophil count decreased
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Investigations
Platelet count decreased
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Metabolism and nutrition disorders
Decreased appetite
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
19.0%
4/21 • Day 1 up to 60.7 months
22.9%
8/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Metabolism and nutrition disorders
Dehydration
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Metabolism and nutrition disorders
Hypercalcaemia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Metabolism and nutrition disorders
Hyperglycaemia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Metabolism and nutrition disorders
Hyperkalaemia
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Metabolism and nutrition disorders
Hyperuricaemia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Metabolism and nutrition disorders
Hypoglycaemia
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Metabolism and nutrition disorders
Iron overload
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Arthralgia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
11.4%
4/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Arthritis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Back pain
14.3%
1/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
11.4%
4/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Muscle spasms
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Muscular weakness
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Musculoskeletal chest pain
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Myalgia
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Neck pain
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Osteoarthritis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Osteopenia
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Musculoskeletal and connective tissue disorders
Pain in extremity
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
14.3%
3/21 • Day 1 up to 60.7 months
11.4%
4/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Basal cell carcinoma
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Nervous system disorders
Ataxia
14.3%
1/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Nervous system disorders
Dizziness
14.3%
1/7 • Day 1 up to 60.7 months
33.3%
2/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
17.1%
6/35 • Day 1 up to 60.7 months
40.0%
2/5 • Day 1 up to 60.7 months
Nervous system disorders
Dysgeusia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Nervous system disorders
Headache
42.9%
3/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
19.0%
4/21 • Day 1 up to 60.7 months
14.3%
5/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Nervous system disorders
Paraesthesia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Psychiatric disorders
Anxiety
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
11.4%
4/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Psychiatric disorders
Confusional state
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Psychiatric disorders
Depression
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Psychiatric disorders
Insomnia
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Renal and urinary disorders
Pollakiuria
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Renal and urinary disorders
Proteinuria
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Reproductive system and breast disorders
Gynaecomastia
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Respiratory, thoracic and mediastinal disorders
Cough
14.3%
1/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
17.1%
6/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Respiratory, thoracic and mediastinal disorders
Dyspnoea
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
28.6%
6/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Respiratory, thoracic and mediastinal disorders
Dyspnoea exertional
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Respiratory, thoracic and mediastinal disorders
Epistaxis
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
22.9%
8/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Respiratory, thoracic and mediastinal disorders
Hypoxia
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Respiratory, thoracic and mediastinal disorders
Nasal congestion
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Respiratory, thoracic and mediastinal disorders
Rhinorrhoea
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Respiratory, thoracic and mediastinal disorders
Upper-airway cough syndrome
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Skin and subcutaneous tissue disorders
Dry skin
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
0.00%
0/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Skin and subcutaneous tissue disorders
Ecchymosis
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Skin and subcutaneous tissue disorders
Pruritus
14.3%
1/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
11.4%
4/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Skin and subcutaneous tissue disorders
Pruritus generalised
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
5.7%
2/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Skin and subcutaneous tissue disorders
Rash
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Skin and subcutaneous tissue disorders
Skin lesion
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
0.00%
0/21 • Day 1 up to 60.7 months
2.9%
1/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months
Vascular disorders
Hypertension
0.00%
0/7 • Day 1 up to 60.7 months
16.7%
1/6 • Day 1 up to 60.7 months
9.5%
2/21 • Day 1 up to 60.7 months
11.4%
4/35 • Day 1 up to 60.7 months
20.0%
1/5 • Day 1 up to 60.7 months
Vascular disorders
Hypotension
0.00%
0/7 • Day 1 up to 60.7 months
0.00%
0/6 • Day 1 up to 60.7 months
4.8%
1/21 • Day 1 up to 60.7 months
8.6%
3/35 • Day 1 up to 60.7 months
0.00%
0/5 • Day 1 up to 60.7 months

Additional Information

Senior Vice President, Global Clinical Development

Merck Sharp & Dohme LLC

Phone: 800-672-6372

Results disclosure agreements

  • Principal investigator is a sponsor employee Results from a center cannot be submitted for publication before results of multicenter study are published unless it is \> 1 year since study completion. Then, Investigator can publish if manuscript is submitted to Celgene 60 days prior to submission. If Celgene decides publication would hinder drug development, Investigator must delay submission for up to 90 additional days. Investigator must delete confidential information before submission and defer publication to permit patent applications.
  • Publication restrictions are in place

Restriction type: OTHER