Anti-CD45 ADCs YTH24.5-SG3249 and YTH24.5-SG3376 potently and specifically killed human CD45-expressing leukemic cell lines in cell viability assays, with EC50 values of 0.213 pM and 0.052 pM, respectively...Moreover, the anti-CD45 ADCs also showed potent anti-leukemic activity and prevented the development of AML and prolonged survival (p<0.01 for both YTH24.5 ADCs vs Isotype ADC controls) in a xenogeneic OCIM1 model of AML in NSG mice...