Elo treatment significantly increased γδ T cell cytotoxicity and degranulation, and these effects were prevented by Fc receptor blockade or by Fc-deficient Elo, indicating an antibody-dependent cellular cytotoxicity (ADCC) mechanism. Our findings demonstrate for the first time that Elo directly boosts γδ T cell anti-tumor activity against PEL, offering novel preclinical evidence for combining Elo with γδ T cell therapy as a potential treatment strategy for this intractable lymphoma.