Pinatuzumab Vedotin (RG-7593, DCDT2980S, DCDT-2989S), is an antibody-drug conjugate (ADC) composed of CD22(Sialic acid binding Ig-like lectin 2, SIGLEC2, SIGLEC-2, B-lymphocyte cell adhesion molecule, BL-CAM, Leu-14) antibody and cytotoxic agent monomethyl auristatin E (MMAE) conjugated through maleimidocaproyl-valyl-citrullinyl-p-aminobenzyloxycarbonyl (mc-val-cit-PABC) type linker.