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Naratuximab emtansine (IMGN529) is a CD37-targeted antibody-drug conjugate (ADC) composed of a humanized IgG1 monoclonal antibody linked to the microtubule-disrupting agent DM1. This compound demonstrates high affinity and specificity to CD37, facilitating the internalization, processing, and intracellular release of DM1. The functional activity of DM1 enables it to induce cell cycle arrest and apoptosis by disrupting microtubule assembly.