Denintuzumab (hBU 12) is a recombinant humanized anti-CD19 monoclonal antibody. Denintuzumab binds to CD19 on the surface of B cells. Denintuzumab can be used as the antibody moiety (ADC antibody) of antibody-drug conjugates to synthesize ADC, Denintuzumab Mafodotin (SGN-CD19A) . Denintuzumab Mafodotin can be used in the research of acute lymphoblastic leukemia[1].