Advances in NK cell therapy for multiple myeloma.

Multiple myeloma (MM) is a malignant disease in which clonal plasma cells proliferate abnormally. In patients with MM, the number and function of NK cells are suppressed, resulting in reduced immune surveillance and clearance of myeloma cells. Restoring or enhancing the killing effect of NK cells on myeloma cells is an important strategy for MM immunotherapy. At present, a series of great progress has been made in preclinical and clinical studies for NK cell adoptive therapy and CAR-NK therapy. This article introduces the current status of various treatment strategies for MM, NK cells in MM, and reviews the latest results of NK cell immunotherapy for MM.