Zahra Mahmoudjafari, PharmD, MBA, BCOP, FHOPA; Ryan Haumschild, PharmD, MBA, MS; Faith Davies, MD; Shachar Peles, MD, and Sagar Lonial MD, FACP discuss how quadruple therapy regimens incorporating CD38 antibodies have become the standard of care for both transplant-eligible and transplant-ineligible multiple myeloma patients, with treatment decisions guided by patient risk stratification, minimal residual disease monitoring, and the balance between achieving deep responses and maintaining quality of life.