Polatuzumab vedotin (Polivy) is an ADC consisting of a CD79b-directed antibody and Monomethyl auristatin E (MMAE) that can be used in combination with bendamustine and rituximab for the treatment of adult patients with at least two relapses or refractory diffuse large B-cell lymphoma. Polatuzumab vedotin binds to CD79b and is internalized by tumor cells. MMAE is cleaved from cells by lysosomal protease and promotes tumor cell apoptosis by inhibiting microtubule formation.