Overview Observation of the Efficacy of BAd Regimen in the Treatment of Relapsed and Refractory Multiple Myeloma Status: Recruiting Trial end date: 2024-05-31 Target enrollment: Participant gender: Summary Observe the best dose, efficacy and adverse reactions of BAd in the treatment of relapsed and refractory multiple myeloma. Phase: Phase 3 Details Lead Sponsor: Liao AijunTreatments: Bendamustine HydrochlorideDexamethasoneDoxorubicinLiposomal doxorubicin