RecruitingPhase 1Biological interventionLMY-920 for Treatment of Relapsed or Refractory MyelomaSince CAR-T cell treatment of refractory myeloma has shown success, based on preclinical data, we posit that CAR-T cells expressing B-cell activating factor (BAFF) can become another strategy to treat refractory myeloma, even after relapse following BCMA targeting CAR-T cell treatment. This will be phase 1 study of BAFF ligand CAR-T cells in relapsed and refractory myeloma.