Anti-BCMA CAR-NK Therapy in Relapsed or Refractory Multiple Myeloma

"Ten eligible patients with relapsed refractory multiple myeloma will be enrolled based on inclusion criteria and informed consent. After conditioning with Fludarabine and Cyclophosphamide, patients will receive a single infusion of BCMA CAR NK cells with close monitoring using one of the following dose levels:~* Dose Level 1: 1×10\^7/Kg~* Dose Level 2: 5×10\^7/Kg~* Dose Level 3: 1×10\^8/Kg Safety Assessment: Adverse events will be recorded and graded. Laboratory parameters and cytokine release syndrome (CRS) markers will be closely monitored. Efficacy Evaluation: Response assessments will follow IMWG guidelines, including complete response (CR), partial response (PR), stable disease (SD), and progressive disease."