Bispecific antibodies that engage T cells to target B cell maturation antigen (BCMA) or G protein-coupled receptor class C group 5 member D (GPRC5D) have demonstrated remarkable efficacy in heavily pretreated relapsed or refractory MM leading to the recent accelerated approval of teclistamab, elranatamab and talquetamab by health agencies. Future challenges however remain to define their optimal dosing schedule and duration, sequencing and integration with established anti-MM therapeutics …