Allogeneic UCB-derived, Dual-targeting BCMA/CD19 CAR-T for Relapsed/Refractory Multiple Myeloma
The purpose of this clinical trial is to learn if allogeneic cord blood-derived CAR-T cell drug works to treat Multiple Myeloma (MM) including Bone-related extramedullary (EMB) disease and extramedullary extraosseous disease(EME) in adults. It will also learn about the safety of the allogeneic cord blood-derived CAR-T cell drug. The main questions it aims to answer are:
1. What adverse events occur and the incidence rate of DLTs within 28 days and UCAR-T-related AEs within 28 days after the allogeneic cord blood-derived CAR-T cell injection for multiple myeloma (MM)?
2. Which dose level is th