The survival of multiple myeloma (MM) patients was significantly improved with the treatment advancement. However, the majority of patients relapsed and progressed eventually with poor prognosis and short survival.1 New strategies, such as immunotherapy and chimeric antigen receptor (CAR) T cells therapy, appear to be promising treatments for this population.1 The restricted expression of B-cell maturation antigen (BCMA) on plasma cells has made it an interesting and optimal target for immunotherapy in MM.1 Two CAR T cells, idecabtagene vicleucel and ciltacabtagene autoleucel, have been previously approved for clinical use in Europe, having impressive results in heavily treated patients.1 ARI0002h is a CAR T cells made up of a tumor necrosis factor ligand superfamily member 9 (4-1BB) base CAR with a humanized anti-BCMA fragment entirely developed in an academic institution with evidence of in vitro and in vivo efficacy.1