IMGN779, a CD33-Targeted Antibody-Drug Conjugate (ADC) with a Novel DNA-Alkylating Effector Molecule, Induces DNA Damage, Cell Cycle Arrest, and Apoptosis in AML Cells

IMGN779 is a CD33-targeting ADC consisting of a humanized anti-CD33 antibody, Z4681A, conjugated to DGN462, a novel DNA-alkylating agent, through a cleavable disulfide linker, sulfo-SPDB. CD33 is broadly expressed on leukemic blasts of patients with AML, making it a promising target for AML therapy. DGN462 is a member of the novel IGN class of DNA-acting cytotoxic agents, that consists of an indolino-benzodiazepine dimer containing a mono-imine...