NCT06623630 2026-03-11Lymphodepleting Total Body Irradiation (TBI) Plus Cyclophosphamide Prior to Ciltacabtagene Autoleucel (Carvykti; Cilta-cel) for Multiple Myeloma (MM) Patients With Impaired Renal FunctionWashington University School of MedicinePhase 1 Recruiting16 enrolled