TransThera Sciences (Nanjing) Inc. has announced a significant regulatory milestone with the approval of a Phase II Investigational New Drug (IND) by the National Medical Products Administration (NMPA) of the People's Republic of China. This approval pertains to the clinical trial of Tinengotinib in combination with Fulvestrant, aimed at treating previously treated hormone receptor-positive (HR+) and human epidermal growth factor receptor 2 negative or low expression (HER2-) relapsed or metastatic breast cancer. The open-label, multicenter study will be conducted in China, focusing on evaluating the safety, efficacy, and pharmacokinetics of the treatment combination. This development marks a promising advancement in offering a new therapeutic option for patients resistant to conventional endocrine therapies.