Anti-CD37 therapeutic approaches- killing mechanisms. Several therapeutics have been studied, including monoclonal antibodies (e.g., Otlertuzumab, DuoHexaBody), an antibody-drug conjugate (Naratuximab Emtansine), and chimeric antigen receptor T cells (CAR-T). Different tumor cell killing mechanisms were exploited, e.g., complement-dependent cellular cytotoxicity (CDCC), antibody-dependent cellular phagocytosis (ADCP), antibody-dependent cellular cytotoxicity (ADCC), and direct induction of apoptosis. ITIM: immune tyrosine-based inhibitory motif; MAC: membrane attacking complex; C1q: complement component 1q; FcγR: Fc-gamma receptor; FOXO3: Forkhead box O3.