Linvoseltamab in Addition to Lenalidomide (L2) During Maintenance Therapy of NDMM to Deepen Responses or Redrive MRD Negativity After Relapse

"Participants will receive Linvoseltamab intravenously (IV) according to the following schedule and regimen, for up to 24 cycles, each cycle lasting 28 days:~* Cycle 1 Day 1: 5mg~* Cycle 1 Day 8: 25mg~* Cycle 1 Days 15, 22: 100mg~* Cycles 2 and 3, Days 1, 8, 15, 22: 100mg~* Cycles 3 and 6, Days 1 and 15: 100mg~* Cycles 7 through 24: 100mg"

Participants will take 10mg of Lenalidomide maintenance therapy standard of care by mouth daily from days 1 through 21 of each 28 day cycle of Linvoseltamab therapy. Lenalidomide therapy will begin on Cycle 2 Day 1 of Linvoseltamab therapy.