Arm A: PVd or DPd (Standard Therapy) | Experimental | Participants will receive either PVd or DPd as a standard therapy. In PVd treatment, participants will receive oral pomalidomide 4 mg on Days 1 to 14 in each cycle; bortezomib 1.3 mg/meter square (m^2) SC on Days 1, 4, 8 and 11 (Cycles 1 to 8) and on Days 1 and 8 (Cycle 9 onwards) and oral dexamethasone 20 mg on Days 1, 2, 4, 5, 8, 9, 11 and 12 (Cycles 1 to 8) and Days 1, 2, 8 and 9 (Cycle 9 onwards). Each cycle will consist of 21 days. In DPd treatment, participants will receive daratumumab SC 1800 mg weekly on Days 1, 8, 15, and 22 (Cycles 1 and 2), every 2 weeks on Days 1 and 15 (Cycles 3 to 6) and every 4 weeks on Day 1 (Cycle 7 onwards); oral pomalidomide 4 mg on Days 1 to 21 (Cycle 1 onwards); dexamethasone 40 mg oral or IV weekly on Days 1, 8, 15, and 22 (Cycle 1 onwards). Each cycle will consist of 28 days. Participants will continue to receive PVd or DPd until confirmed PD, death, intolerable toxicity, withdrawal of consent, or end of the study, whichever occurs earlier. | - Pomalidomide
- Bortezomib
- Dexamethasone
- Daratumumab
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