SLAMF7 and plasma cell myeloma: Therefore, it may be worthwhile to explore if ND patients with high SLAMF7 expression on NK cells are more responsive to treatment with elotuzumab, which stimulates the antibody-dependent killing of myeloma target cells by NK cells and monocytes and promotes the SLAMF7–SLAMF7-dependent co-stimulation of NK cells [10,51,52].