RecruitingPhase 2Biological interventionStudy of Arlocabtagene Autoleucel (BMS-986393) a GPRC5D-directed CAR T Cell Therapy in Adult Participants With Relapsed or Refractory Multiple MyelomaThe purpose of this study is to evaluate the effectiveness and safety of Arlocabtagene Autoleucel (BMS-986393) in participants with relapsed or refractory multiple myeloma.