Novel Treatment Options for Multiple Myeloma

Multiple myeloma (MM), the second most common hematologic malignancy in the United States, is characterized by repeated cycles of remission and relapse, with increasing resistance to treatment after each line of therapy. Despite the virtually incurable nature of MM, recent therapeutic breakthroughs have fundamentally reshaped its treatment landscape. This review explores evolving care paradigms, spanning from newly diagnosed MM to relapsed or refractory disease. In the frontline setting, treatment strategies have shifted beyond their traditional emphasis on autologous stem-cell transplant eligibility to a broader categorization of patients on the basis of their suitability for quadruplet therapy. In the relapsed/refractory setting, novel immunotherapies, including chimeric antigen receptor T-cell (CAR-T) therapies and bispecific antibodies, have revolutionized treatment, offering new hope for patients with previously limited options. Precision medicine is playing a growing role in MM treatment, with venetoclax showing significant efficacy in patients with t(11;14) translocation, advancing targeted therapy for this subgroup. On the horizon, investigational CAR-T products and cereblon E3 ligase modulators, such as mezigdomide and iberdomide, may provide faster, more durable responses compared with current therapies. In addition, belantamab mafodotin, an antibody-drug conjugate withdrawn from the US market in 2022, is on the verge of reapproval after positive results from recent randomized trials. While these therapies offer significant potential, challenges remain in managing toxicity, ensuring treatment accessibility, and optimizing sequencing strategies. As the therapeutic arsenal expands, the need for personalized MM treatment plans that balance efficacy with quality of life becomes even more essential.