{"groups":[{"description":"Participants received SEA-BCMA 100 milligrams (mg) as a monotherapy once every 2 weeks (q2wk) intravenous (IV) on Day 1 and 15 of each 28- day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.","id":"FG000","title":"Part A: SEA-BCMA 100mg"},{"description":"Participants received SEA-BCMA 200 mg as a monotherapy q2wk IV on Day 1 and 15 of each 28- day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.","id":"FG001","title":"Part A: SEA-BCMA 200mg"},{"description":"Participants received SEA-BCMA 400 mg as a monotherapy q2wk IV on Day 1 and 15 of each 28- day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.","id":"FG002","title":"Part A: SEA-BCMA 400mg"},{"description":"Participants received SEA-BCMA 800 mg as a monotherapy q2wk IV on Day 1 and 15 of each 28- day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.","id":"FG003","title":"Part A: SEA-BCMA 800mg"},{"description":"Participants received SEA-BCMA 1600 mg as a monotherapy q2wk IV on Day 1 and 15 of each 28- day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.","id":"FG004","title":"Part A: SEA-BCMA 1600mg"},{"description":"Participants received SEA-BCMA 1600 mg as an IV infusion once every 1 week (q1wk) as induction dose for the first two cycles, followed by q2wk as maintenance dose in subsequent cycles, of each 28-day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.","id":"FG005","title":"Part B: SEA-BCMA 1600mg"},{"description":"Participants received SEA-BCMA 1600 mg IV q2wk on Day 1 and 15 of each 28-day cycle, and dexamethasone 40 mg orally or as an IV infusion on Day 1, 8, 15, and 22 of each 28-day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.","id":"FG006","title":"Part C: SEA-BCMA 1600mg and Dexamethasone"},{"description":"Participants received SEA-BCMA 800 mg IV q1wk on Day 1 and 15 of each 28-day cycle, and dexamethasone 40 mg orally or as an IV infusion on Day 1, 8, 15, and 22 of each 28-day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.","id":"FG007","title":"Part C: SEA-BCMA 800mg and Dexamethasone"},{"description":"Participants received SEA-BCMA 1600 mg IV q1wk on Day 1,8,15 and 22 of each 28-day cycle, and dexamethasone 40 mg orally or as an IV infusion on Day 1, 8, 15, and 22 of each 28-day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.","id":"FG008","title":"Part C: SEA-BCMA 1600 mg and Dexamethasone"},{"description":"Participants received SEA-BCMA 1600 mg IV q2wk on Day 1 and 15 of each 28-day cycle, dexamethasone 40 mg orally or as an IV infusion on Day 1, 8, 15, and 22 and pomalidomide 4 mg orally, daily from Day 1 to 21 of each of each 28-day cycle. Participants received treatment until disease progression, unacceptable toxicity, withdrawal of consent, death, or study termination, whichever occurs first.","id":"FG009","title":"Part D: SEA-BCMA 1600 mg, Pomalidomide and Dexamethasone"}],"periods":[{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"2"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"Other"},{"reasons":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"1"},{"groupId":"FG002","numSubjects":"2"},{"groupId":"FG003","numSubjects":"4"},{"groupId":"FG004","numSubjects":"11"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"Death"},{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"1"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"Lost to Follow-up"},{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"2"},{"groupId":"FG004","numSubjects":"1"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"Study terminated by sponsor"},{"reasons":[{"groupId":"FG000","numSubjects":"1"},{"groupId":"FG001","numSubjects":"1"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"1"},{"groupId":"FG004","numSubjects":"7"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"Withdrawal by Subject"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"2"},{"groupId":"FG001","numSubjects":"2"},{"groupId":"FG002","numSubjects":"2"},{"groupId":"FG003","numSubjects":"7"},{"groupId":"FG004","numSubjects":"22"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"2"},{"groupId":"FG001","numSubjects":"2"},{"groupId":"FG002","numSubjects":"2"},{"groupId":"FG003","numSubjects":"7"},{"groupId":"FG004","numSubjects":"22"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"NOT COMPLETED"}],"title":"Part A"},{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"2"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"Death"},{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"12"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"Study terminated by sponsor"},{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"6"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"Withdrawal by Subject"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"comment":"Participants who were enrolled in Part-B of the study.","groupId":"FG005","numSubjects":"20"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"20"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"NOT COMPLETED"}],"title":"Part B"},{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"2"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"Other"},{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"6"},{"groupId":"FG007","numSubjects":"1"},{"groupId":"FG008","numSubjects":"2"},{"groupId":"FG009","numSubjects":"0"}],"type":"Death"},{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"3"},{"groupId":"FG007","numSubjects":"3"},{"groupId":"FG008","numSubjects":"2"},{"groupId":"FG009","numSubjects":"0"}],"type":"Study terminated by sponsor"},{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"1"},{"groupId":"FG007","numSubjects":"2"},{"groupId":"FG008","numSubjects":"1"},{"groupId":"FG009","numSubjects":"0"}],"type":"Withdrawal by Subject"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"comment":"Participants who were enrolled in Part-C of the study.","groupId":"FG006","numSubjects":"12"},{"comment":"Participants who were enrolled in Part-C of the study.","groupId":"FG007","numSubjects":"6"},{"comment":"Participants who were enrolled in Part-C of the study.","groupId":"FG008","numSubjects":"5"},{"groupId":"FG009","numSubjects":"0"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"12"},{"groupId":"FG007","numSubjects":"6"},{"groupId":"FG008","numSubjects":"5"},{"groupId":"FG009","numSubjects":"0"}],"type":"NOT COMPLETED"}],"title":"Part C"},{"dropWithdraws":[{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"1"}],"type":"Death"},{"reasons":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"4"}],"type":"Study terminated by sponsor"}],"milestones":[{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"comment":"Participants who were enrolled in Part-D of the study.","groupId":"FG009","numSubjects":"5"}],"type":"STARTED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"0"}],"type":"COMPLETED"},{"achievements":[{"groupId":"FG000","numSubjects":"0"},{"groupId":"FG001","numSubjects":"0"},{"groupId":"FG002","numSubjects":"0"},{"groupId":"FG003","numSubjects":"0"},{"groupId":"FG004","numSubjects":"0"},{"groupId":"FG005","numSubjects":"0"},{"groupId":"FG006","numSubjects":"0"},{"groupId":"FG007","numSubjects":"0"},{"groupId":"FG008","numSubjects":"0"},{"groupId":"FG009","numSubjects":"5"}],"type":"NOT COMPLETED"}],"title":"Part D"}],"preAssignmentDetails":"This study had following parts: Part A (SEA-\\[B-cell maturation antigen\\] BCMA) monotherapy, Part B (SEA-BCMA monotherapy intensive dosing), Part C (SEA-BCMA and dexamethasone combination) and Part D (SEA-BCMA, pomalidomide and dexamethasone combination).","recruitmentDetails":"A total of 106 participants signed the informed consent form. 15 participants were screen failures, 8 were not assigned to receive study treatment and 83 participants received at least 1 dose of study treatment."}