Tumor-associated calcium signal transducer 2 (TROP2) is a promising therapeutic target due to its high expression observed in several solid tumors. Investigators from Jiangsu Hengrui Pharmaceuticals Co. Ltd. have reported preclinical data on the anti-TROP2 antibody-drug conjugate (ADC) SHR-A1921 for the potential treatment of non-small-cell lung cancer (NSCLC).