NCT04287660: A Phase 3, Single Arm, Multi-Center Study to Assess the Efficacy and Safety of Clarithromycin(Biaxin)-Lenalidomide-Low-Dose-Dexamethasone (BiRd) Combined With B-cell Maturation Antigen (BCMA)-Directed Chimeric Antigen Receptor (CAR) T-cell Therapy in Patients With Newly Diagnosed Multiple Myeloma | TrialSignal