Trial Outcomes & Findings for Safety Study of KPT-330 (Selinexor) in Patients With Advanced or Metastatic Solid Tumor Cancer (NCT NCT01607905)

Last Updated: 2023-01-26

Results Overview

An Adverse Event (AE) was defined as any untoward medical occurrence in a clinical investigation participant administered a drug; it does not necessarily have to have a causal relationship with this treatment. TEAE was defined as an adverse event with an onset that occurs after receiving study drug. A serious adverse event (SAE) was defined as an AE that meets one or more of the mentioned criteria; is fatal, life threatening, required in-patient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, congenital anomaly/birth defect, or important medical events. Number of participants with TEAEs and TESAEs were reported.

Recruitment status

COMPLETED

Study phase

PHASE1

Target enrollment

192 participants

Primary outcome timeframe

From start of study drug administration to 30 days after last dose of study treatment (maximum duration of 45 months)

Results posted on

2023-01-26

Participant Flow

The study was conducted at six centers in United States, Canada, and Denmark from 18 June 2012 and 15 March 2016.

A total of 192 participants were enrolled, of which 191 participants started study (1 participant reported missing malignancy), 189 participants received at least 1 dose of study drug.

Participant milestones

Participant milestones
Measure	Arm A (Colorectal Cancer) Participants with colorectal cancer with liver metastasis received oral selinexor as a single agent in eight schedules- Schedule 1: ≤12 milligrams per meter square (mg/m\^2) 3 times weekly (TIW) during Weeks 1 and 3, twice weekly (BIW) during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW(Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 6: ≥20 mg/m\^2 BIW (Days 1 and 4) after 500 mg (Cycle 1, Week 1) to 1000 mg (Cycle 1, Week 2 onwards) acetaminophen (given 1 hour prior to each selinexor dose) up to 8 doses/cycle(28 days/cycle); Schedule 7: ≥50 mg/m\^2 once weekly (QW) up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm B (Gynecological Cancer) Participants with gynecological cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm C (Squamous Cell Cancer) Participants with squamous cell cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm D (Castrate-resistant Prostate Cancer) Participants with CRPC received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm E (Glioblastoma Multiforme) Participants with GBM received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm F (Melanoma) Participants with melanoma received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm G (Other Solid Tumors) Participants with other solid tumors received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.
Overall Study STARTED	60	20	21	21	7	15	47
Overall Study Received Study Drug	59	20	21	21	6	15	47
Overall Study Low Dose (<30 mg/m^2)	16	5	3	0	0	2	8
Overall Study Medium Dose (>=30 mg/m^2 and <55 mg/m^2)	27	11	15	8	6	3	21
Overall Study High Dose (>= 55 mg/m^2)	16	4	3	13	0	10	18
Overall Study COMPLETED	0	0	0	0	0	0	0
Overall Study NOT COMPLETED	60	20	21	21	7	15	47

Reasons for withdrawal

Reasons for withdrawal
Measure	Arm A (Colorectal Cancer) Participants with colorectal cancer with liver metastasis received oral selinexor as a single agent in eight schedules- Schedule 1: ≤12 milligrams per meter square (mg/m\^2) 3 times weekly (TIW) during Weeks 1 and 3, twice weekly (BIW) during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW(Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 6: ≥20 mg/m\^2 BIW (Days 1 and 4) after 500 mg (Cycle 1, Week 1) to 1000 mg (Cycle 1, Week 2 onwards) acetaminophen (given 1 hour prior to each selinexor dose) up to 8 doses/cycle(28 days/cycle); Schedule 7: ≥50 mg/m\^2 once weekly (QW) up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm B (Gynecological Cancer) Participants with gynecological cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm C (Squamous Cell Cancer) Participants with squamous cell cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm D (Castrate-resistant Prostate Cancer) Participants with CRPC received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm E (Glioblastoma Multiforme) Participants with GBM received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm F (Melanoma) Participants with melanoma received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm G (Other Solid Tumors) Participants with other solid tumors received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.
Overall Study Withdrawal by participant	7	2	4	6	0	4	12
Overall Study Incidence or severity of AEs	5	1	1	3	0	2	8
Overall Study Disease progression	44	16	15	11	6	7	21
Overall Study Non-compliance with study procedures	0	0	0	0	0	0	1
Overall Study Death	1	1	1	1	0	0	3
Overall Study Other treatments become available	1	0	0	0	0	0	1
Overall Study Investigator discretion	0	0	0	0	0	1	0
Overall Study Other	1	0	0	0	0	0	1
Overall Study Randomized but not treated	1	0	0	0	1	1	0

Baseline Characteristics

Safety Study of KPT-330 (Selinexor) in Patients With Advanced or Metastatic Solid Tumor Cancer

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure	Arm A (Colorectal Cancer) n=59 Participants Participants with colorectal cancer with liver metastasis received oral selinexor as a single agent in eight schedules- Schedule 1: ≤12 milligrams per meter square (mg/m\^2) 3 times weekly (TIW) during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW(Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 6: ≥20 mg/m\^2 BIW (Days 1 and 4) after 500 mg (Cycle 1, Week 1) to 1000 mg (Cycle 1, Week 2 onwards) acetaminophen (given 1 hour prior to each selinexor dose) up to 8 doses/cycle(28 days/cycle); Schedule 7: ≥50 mg/m\^2 once weekly (QW) up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm B (Gynecological Cancer) n=20 Participants Participants with gynecological cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm C (Squamous Cell Cancer) n=21 Participants Participants with squamous cell cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm D (Castrate-resistant Prostate Cancer) n=21 Participants Participants with CRPC received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm E (Glioblastoma Multiforme) n=6 Participants Participants with GBM received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm F (Melanoma) n=15 Participants Participants with melanoma received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm G (Other Solid Tumors) n=47 Participants Participants with other solid tumors received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Total n=189 Participants Total of all reporting groups
Age, Continuous	59.8 years STANDARD_DEVIATION 11.35 • n=5 Participants	55.0 years STANDARD_DEVIATION 12.54 • n=7 Participants	59.2 years STANDARD_DEVIATION 7.39 • n=5 Participants	68.7 years STANDARD_DEVIATION 7.69 • n=4 Participants	56.0 years STANDARD_DEVIATION 14.94 • n=21 Participants	67.7 years STANDARD_DEVIATION 11.04 • n=8 Participants	57.7 years STANDARD_DEVIATION 12.67 • n=8 Participants	60.2 years STANDARD_DEVIATION 11.82 • n=24 Participants
Sex: Female, Male Female	25 Participants n=5 Participants	20 Participants n=7 Participants	9 Participants n=5 Participants	0 Participants n=4 Participants	3 Participants n=21 Participants	4 Participants n=8 Participants	14 Participants n=8 Participants	75 Participants n=24 Participants
Sex: Female, Male Male	34 Participants n=5 Participants	0 Participants n=7 Participants	12 Participants n=5 Participants	21 Participants n=4 Participants	3 Participants n=21 Participants	11 Participants n=8 Participants	33 Participants n=8 Participants	114 Participants n=24 Participants
Race (NIH/OMB) American Indian or Alaska Native	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	1 Participants n=4 Participants	0 Participants n=21 Participants	0 Participants n=8 Participants	0 Participants n=8 Participants	1 Participants n=24 Participants
Race (NIH/OMB) Asian	3 Participants n=5 Participants	2 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants	0 Participants n=21 Participants	0 Participants n=8 Participants	1 Participants n=8 Participants	6 Participants n=24 Participants
Race (NIH/OMB) Native Hawaiian or Other Pacific Islander	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants	0 Participants n=21 Participants	0 Participants n=8 Participants	0 Participants n=8 Participants	0 Participants n=24 Participants
Race (NIH/OMB) Black or African American	10 Participants n=5 Participants	0 Participants n=7 Participants	4 Participants n=5 Participants	2 Participants n=4 Participants	0 Participants n=21 Participants	1 Participants n=8 Participants	5 Participants n=8 Participants	22 Participants n=24 Participants
Race (NIH/OMB) White	45 Participants n=5 Participants	18 Participants n=7 Participants	17 Participants n=5 Participants	16 Participants n=4 Participants	6 Participants n=21 Participants	14 Participants n=8 Participants	41 Participants n=8 Participants	157 Participants n=24 Participants
Race (NIH/OMB) More than one race	0 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	0 Participants n=4 Participants	0 Participants n=21 Participants	0 Participants n=8 Participants	0 Participants n=8 Participants	0 Participants n=24 Participants
Race (NIH/OMB) Unknown or Not Reported	1 Participants n=5 Participants	0 Participants n=7 Participants	0 Participants n=5 Participants	2 Participants n=4 Participants	0 Participants n=21 Participants	0 Participants n=8 Participants	0 Participants n=8 Participants	3 Participants n=24 Participants

PRIMARY outcome

Timeframe: From start of study drug administration to 30 days after last dose of study treatment (maximum duration of 45 months)

Population: Safety population included all participants who received at least one dose of selinexor. As pre-specified in the study Protocol data were not collected per dose level. The limited data available based on cancer stratification as pre-specified in the protocol is presented.

Outcome measures

Outcome measures
Measure	Arm A (Colorectal Cancer) n=59 Participants Participants with colorectal cancer with liver metastasis received oral selinexor as a single agent in eight schedules- Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW(Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 6: ≥20 mg/m\^2 BIW (Days 1 and 4) after 500 mg (Cycle 1, Week 1) to 1000 mg (Cycle 1, Week 2 onwards) acetaminophen (given 1 hour prior to each selinexor dose) up to 8 doses/cycle(28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm B (Gynecological Cancer) n=20 Participants Participants with gynecological cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm C (Squamous Cell Cancer) n=21 Participants Participants with squamous cell cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm D (Castrate-resistant Prostate Cancer) n=21 Participants Participants with CRPC received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm E (Glioblastoma Multiforme) n=6 Participants Participants with GBM received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm F (Melanoma) n=15 Participants Participants with melanoma received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm G (Other Solid Tumors) n=47 Participants Participants with other solid tumors received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Selinexor Dose: 30 mg/m^2 Participants received single oral dose of 30 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 35 mg/m^2 Participants received single oral dose of 35 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 39 mg/m^2 Participants received single oral dose of 39 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 40 mg/m^2 Participants received single oral dose of 40 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 45 mg/m^2 Participants received single oral dose of 45 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 50 mg/m^2 Participants received single oral dose of 50 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 55 mg/m^2 Participants received single oral dose of 55 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 58 mg/m^2 Participants received single oral dose of 58 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 65 mg/m^2 Participants received single oral dose of 65 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 70 mg/m^2 Participants received single oral dose of 70 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 80 mg/m^2 Participants received single oral dose of 80 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 85 mg/m^2 Participants received single oral dose of 85 mg/m\^2 Selinexor for Cycle1 Day1.
Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Treatment-emergent Serious Adverse Events (TESAEs) Participants with TESAEs	30 Participants	13 Participants	9 Participants	8 Participants	2 Participants	5 Participants	24 Participants	—	—	—	—	—	—	—	—	—	—	—	—
Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Treatment-emergent Serious Adverse Events (TESAEs) Participants with TEAEs	59 Participants	20 Participants	21 Participants	21 Participants	6 Participants	15 Participants	46 Participants	—	—	—	—	—	—	—	—	—	—	—	—

PRIMARY outcome

Timeframe: From start of study drug administration to 30 days after last dose of study treatment (maximum duration of 45 months)

An AE was defined as any untoward medical occurrence in a clinical investigation participant administered a drug; it does not necessarily have to have a causal relationship with this treatment. TEAE was defined as an adverse event with an onset that occurs after receiving study drug. A treatment-related AE was any untoward medical occurrence in a clinical investigation participant administered a medicinal product; the event had a causal relationship with the treatment or usage.

Outcome measures

Outcome measures
Measure	Arm A (Colorectal Cancer) n=59 Participants Participants with colorectal cancer with liver metastasis received oral selinexor as a single agent in eight schedules- Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW(Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 6: ≥20 mg/m\^2 BIW (Days 1 and 4) after 500 mg (Cycle 1, Week 1) to 1000 mg (Cycle 1, Week 2 onwards) acetaminophen (given 1 hour prior to each selinexor dose) up to 8 doses/cycle(28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm B (Gynecological Cancer) n=20 Participants Participants with gynecological cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm C (Squamous Cell Cancer) n=21 Participants Participants with squamous cell cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm D (Castrate-resistant Prostate Cancer) n=21 Participants Participants with CRPC received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm E (Glioblastoma Multiforme) n=6 Participants Participants with GBM received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm F (Melanoma) n=15 Participants Participants with melanoma received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm G (Other Solid Tumors) n=47 Participants Participants with other solid tumors received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Selinexor Dose: 30 mg/m^2 Participants received single oral dose of 30 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 35 mg/m^2 Participants received single oral dose of 35 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 39 mg/m^2 Participants received single oral dose of 39 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 40 mg/m^2 Participants received single oral dose of 40 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 45 mg/m^2 Participants received single oral dose of 45 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 50 mg/m^2 Participants received single oral dose of 50 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 55 mg/m^2 Participants received single oral dose of 55 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 58 mg/m^2 Participants received single oral dose of 58 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 65 mg/m^2 Participants received single oral dose of 65 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 70 mg/m^2 Participants received single oral dose of 70 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 80 mg/m^2 Participants received single oral dose of 80 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 85 mg/m^2 Participants received single oral dose of 85 mg/m\^2 Selinexor for Cycle1 Day1.
Number of Participants With Treatment-related Treatment-emergent Adverse Events Participants with Treatment-related TEAEs	59 Participants	19 Participants	20 Participants	21 Participants	6 Participants	14 Participants	45 Participants	—	—	—	—	—	—	—	—	—	—	—	—
Number of Participants With Treatment-related Treatment-emergent Adverse Events Participants with Treatment-related TESAEs	6 Participants	2 Participants	1 Participants	4 Participants	1 Participants	1 Participants	9 Participants	—	—	—	—	—	—	—	—	—	—	—	—

PRIMARY outcome

Timeframe: From start of study drug administration to 30 days after last dose of study treatment (maximum duration of 45 months)

An AE was any untoward medical occurrence in a participant who received study drug without regard to possibility of causal relationship. As per NCI-CTCAE version 4.03, Grade 1: asymptomatic or mild symptoms, clinical or diagnostic observations only, intervention not indicated; Grade 2: moderate, minimal, local or noninvasive intervention indicated, limiting age-appropriate instrumental activities of daily life (ADL); Grade 3: severe or medically significant but not immediately life-threatening, hospitalization or prolongation of existing hospitalization indicated, disabling, limiting self-care ADL; Grade 4: life-threatening consequence, urgent intervention indicated; Grade 5: death related to AE. A treatment related AE was any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event had a causal relationship with the treatment or usage.

Outcome measures

Outcome measures
Measure	Arm A (Colorectal Cancer) n=59 Participants Participants with colorectal cancer with liver metastasis received oral selinexor as a single agent in eight schedules- Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW(Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 6: ≥20 mg/m\^2 BIW (Days 1 and 4) after 500 mg (Cycle 1, Week 1) to 1000 mg (Cycle 1, Week 2 onwards) acetaminophen (given 1 hour prior to each selinexor dose) up to 8 doses/cycle(28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm B (Gynecological Cancer) n=20 Participants Participants with gynecological cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm C (Squamous Cell Cancer) n=21 Participants Participants with squamous cell cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm D (Castrate-resistant Prostate Cancer) n=21 Participants Participants with CRPC received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm E (Glioblastoma Multiforme) n=6 Participants Participants with GBM received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm F (Melanoma) n=15 Participants Participants with melanoma received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm G (Other Solid Tumors) n=47 Participants Participants with other solid tumors received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Selinexor Dose: 30 mg/m^2 Participants received single oral dose of 30 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 35 mg/m^2 Participants received single oral dose of 35 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 39 mg/m^2 Participants received single oral dose of 39 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 40 mg/m^2 Participants received single oral dose of 40 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 45 mg/m^2 Participants received single oral dose of 45 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 50 mg/m^2 Participants received single oral dose of 50 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 55 mg/m^2 Participants received single oral dose of 55 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 58 mg/m^2 Participants received single oral dose of 58 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 65 mg/m^2 Participants received single oral dose of 65 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 70 mg/m^2 Participants received single oral dose of 70 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 80 mg/m^2 Participants received single oral dose of 80 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 85 mg/m^2 Participants received single oral dose of 85 mg/m\^2 Selinexor for Cycle1 Day1.
Number of Participants With Treatment-emergent Adverse Events (TEAEs) Greater Than or Equal to Grade 3, Based on National Cancer Institute Common Terminology Criteria (NCI-CTCAE), Version 4.03	50 Participants	17 Participants	16 Participants	17 Participants	4 Participants	11 Participants	35 Participants	—	—	—	—	—	—	—	—	—	—	—	—

PRIMARY outcome

Timeframe: Cycle 1 only (28-day cycle)

Population: DLT Evaluable Population included all participants enrolled to the study during the dose-escalation phase who met the inclusion/exclusion criteria on first day of dosing and completed at least 1 cycle of therapy or experienced a DLT during the first cycle. As pre-specified in the study Protocol data were not collected per dose level. The limited data available based on cancer stratification as pre-specified in the protocol is presented.

Evaluation of DLTs was only conducted in participants who participated in the Dose-escalation Phase. A DLT was defined as any of the following, considered possibly related to drug administration, occurring in the first 28 days (or 21 days for participants on Schedule 8) at the target dose (ie, for Schedule 2 this meant the first 4 weeks after the 12 mg/m2 run-in week): Missed selinexor doses due to drug-related toxicities, discontinuation of a participant due to a toxicity that was at least possibly related to study drug before completing Cycle 1.

Outcome measures

Outcome measures
Measure	Arm A (Colorectal Cancer) n=59 Participants Participants with colorectal cancer with liver metastasis received oral selinexor as a single agent in eight schedules- Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW(Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 6: ≥20 mg/m\^2 BIW (Days 1 and 4) after 500 mg (Cycle 1, Week 1) to 1000 mg (Cycle 1, Week 2 onwards) acetaminophen (given 1 hour prior to each selinexor dose) up to 8 doses/cycle(28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm B (Gynecological Cancer) n=20 Participants Participants with gynecological cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm C (Squamous Cell Cancer) n=21 Participants Participants with squamous cell cancer received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm D (Castrate-resistant Prostate Cancer) n=21 Participants Participants with CRPC received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm E (Glioblastoma Multiforme) n=6 Participants Participants with GBM received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm F (Melanoma) n=15 Participants Participants with melanoma received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Arm G (Other Solid Tumors) n=47 Participants Participants with other solid tumors received oral selinexor as a single agent in eight schedules, Schedule 1: ≤12 mg/m\^2 TIW during Weeks 1 and 3, BIW during Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 2: \>12 mg/m\^2 TIW during Weeks 1 and 3, BIW in Weeks 2 and 4 up to 10 doses/cycle (28 days/cycle); Schedule 3: ≥30 mg/m\^2 BIW (Days 1 and 3) up to 8 doses/cycle (28 days/cycle); Schedule 4: ≥20 mg/m\^2 BIW (Days 1 and 2) up to 8 doses/cycle (28 days/cycle); Schedule 5: ≥35 mg/m\^2 BIW (Days 1 and 4) up to 8 doses (28 days/cycle); Schedule 7: ≥50 mg/m\^2 QW up to 4 doses/cycle (28 days per cycle); Schedule 8: ≥45 mg/m\^2 BIW (Days 1 and 3) up to 4 doses/cycle (21 days/cycle), until disease progression, death, or unacceptable toxicity.	Selinexor Dose: 30 mg/m^2 Participants received single oral dose of 30 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 35 mg/m^2 Participants received single oral dose of 35 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 39 mg/m^2 Participants received single oral dose of 39 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 40 mg/m^2 Participants received single oral dose of 40 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 45 mg/m^2 Participants received single oral dose of 45 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 50 mg/m^2 Participants received single oral dose of 50 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 55 mg/m^2 Participants received single oral dose of 55 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 58 mg/m^2 Participants received single oral dose of 58 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 65 mg/m^2 Participants received single oral dose of 65 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 70 mg/m^2 Participants received single oral dose of 70 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 80 mg/m^2 Participants received single oral dose of 80 mg/m\^2 Selinexor for Cycle1 Day1.	Selinexor Dose: 85 mg/m^2 Participants received single oral dose of 85 mg/m\^2 Selinexor for Cycle1 Day1.
Number of Participants Who Experienced Dose Limiting Toxicity (DLT)	1 Participants	0 Participants	0 Participants	0 Participants	0 Participants	1 Participants	2 Participants	—	—	—	—	—	—	—	—	—	—	—	—

PRIMARY outcome

Timeframe: From start of study drug administration to 30 days after last dose of study treatment (maximum duration of 45 months)

Population: Safety Population included all participants who received at least one dose of selinexor. The data in terms of dose was reported as combined data for participants from all arms, pre-specified in protocol. Here, 'Overall number of participants analyzed' signifies participants with available data for the outcome measure.

The RP2D was the maximum tolerated dose (MTD) or less. MTD was defined as the next lower dose level below the one in which \>1 of 3 participants or ≥2 of 6 participants experienced DLT, provided that dose level was ≤25 percent (%) lower than the highest (intolerable) dose tested. If the projected MTD was \>25% lower than the highest dose tested, then an additional cohort of ≥3 participants was added at a dose that was intermediate between the intolerable dose and the next lower dose.