Bioactivity
ADCdb (DRG0NDXRU) reports a cell-based EC50 of 30.6 ug/mL on EL4 cells (moderate BCMA expression) and Phase 1 clinical efficacy (ORR 60% at 3.4 mg/kg; median PFS 12 months; median DoR 14.3 months). MMAF is an antimitotic tubulin-polymerization inhibitor.