Sichuan Kelun-Biotech Biopharmaceutical Co., Ltd. has announced that the Center for Drug Evaluation $(CDE)$ of the National Medical Products Administration (NMPA) of China has accepted the new indication application for their TROP2-directed antibody-drug conjugate, sacituzumab tirumotecan (sac-TMT), for the treatment of adult patients with unresectable locally advanced, metastatic hormone-receptor positive (HR+) and human epidermal growth factor receptor 2-negative (HER2-) breast cancer. This marks the fourth indication application for sac-TMT accepted by the NMPA, highlighting the drug's clinical value and innovative nature. The application will undergo the priority review and approval process, following positive results from the registrational phase 3 OptiTROP-Breast02 study. This development underscores Kelun-Biotech's commitment to advancing oncology therapeutics to meet unmet clinical needs worldwide.