2-Amino-3-[1-[[4-[[1-[2-[2-[2-[2-[2-[2-[2-[2-[2-[[2-[2-[[6-amino-1-[4-[(10,19-diethyl-7-hydroxy-14,18-dioxo-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4(9),5,7,10,15(20)-heptaen-19-yl)oxycarbonyloxymethyl]anilino]-1-oxohexan-2-yl]amino]-2-oxoethoxy]acetyl]amino]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethoxy]ethyl]triazol-4-yl]methylcarbamoyl]cyclohexyl]methyl]-2,5-dioxopyrrolidin-3-yl]sulfanylpropanoic acid
Metastatic triple-negative breast cancer (mTNBC) is an aggressive form of breast cancer with limited treatment options involving cytotoxic chemotherapy agents. Targeted chemotherapy through the application of antibody-conjugated agents (ADCs) is a recent advance in cancer treatment. One such ADC is sacituzumab govitecan, which combines a humanized anti-trophoblast cell-surface antigen 2 (TROP-2) antibody with the topoisomerase I inhibitor SN-38.  Sacituzumab govitecan was granted FDA approval on April 22nd, 2020 and is marketed under the brand name Trodelvy™ by Immunomedics, Inc.; it is currently indicated under accelerated approval for the treatment of mTNBC patients who have undergone two or more prior therapies. As a targeted cytotoxic agent, it is hoped to provide similar efficacy with reduced adverse effects. In November 2021, sacituzumab govitecan was also approved by the European Commission.