In vitro, DM001 demonstrated high affinity and cytotoxicity in multiple cell lines expressing TROP2 and EGFR, with preferential binding to cells expressing both antigens. In vivo, DM001 exhibited potent, dose-dependent efficacy in multiple cell line and patient-derived xenografts when compared to benchmarks. Notably, DM001 efficacy was superior to parental ADCs in patient-derived lung and pancreatic xenograft models.