PRIMARY OBJECTIVE:~To evaluate the safety of administering chimeric antigen receptor (CAR)-T cells targeting BCMA to participants with RRMM (Dose Escalation).~To determine the maximum tolerated dose (MTD) for anti-BCMA CAR-T cells (Dose Escalation).~Determine whether administering chimeric antigen receptor T cells targeting BCMA to participants with RRMM increases the overall response rate (ORR) in RRMM compared with historical data for non-CAR agents per International Myeloma Working Group (IMWG) response criteria (Dose Expansion).~SECONDARY OBJECTIVES:~Dose Expansion Only:~To describe the efficacy of CAR-T cells targeting BCMA in participants with RRMM.~To evaluate the feasibility of manufacturing anti-BCMA CAR-T cells locally and ability to produce adequate quantities of vector positive T-cells.~To evaluate the safety and toxicity of CAR-T cells targeting BCMA to participants with RRMM~OUTLINE:~Participants will be enrolled sequentially to each dose level dependent on analysis of dose-limiting toxicities at the previous dose level. A dose expansion will occur at the maximum tolerated dose (MTD). Participants will undergo apheresis with collection of autologous peripheral blood mononuclear cells that will be used to generate CAR-T cells. After successful generation of the anti-BCMA CAR-T cells drug product (DP), participants will undergo lymphodepleting chemotherapy with fludarabine (and cyclophosphamide. Participants will undergo an additional evaluation of eligibility on Day -1 or 1 prior to infusion of anti-BCMA CAR-T cell product. A single infusion of anti-BCMA CAR-T cells at the starting dose will be given on Day 1. Following treatment with DP, participants will be followed up at 12 months and annually for up to 15 years.
This is an open-label study to determine the safety of anti-B-cell maturation antigen (BCMA) Chimeric antigen receptor T-cell (CAR T) therapy in participants with Relapsed or Refractory Multiple Myeloma (RRMM).