TACSTD2 and neoplasm: Sacituzumab govitecan or IMMU‐132 (SG) is a novel ADC combining the humanized RS7 antibody targeting Trop‐2 coupled to a hydrolyzable linker that allows for a time‐dependent release of the payload, SN‐38, the active metabolite of irinotecan (7‐ethyl‐10‐hydroxycamptothecin) to the tumor tissue (Goldenberg et al., 2015).