CD38 and Miyoshi myopathy: Dara mediates the death of CD38‐expressing MM cells through a variety of immune‐mediated mechanisms (antibody‐dependent cell‐mediated cytotoxicity, complement‐dependent cytotoxicity, and antibody‐dependent cellular phagocytosis) and direct apoptosis by crosslinking.7, 8, 9 Furthermore, several studies have demonstrated that beside a direct antitumor effect, Dara probably have an immunologic mechanism of action through targeting of CD38 expressing non‐MM immune cells.10, 11