Core Insights - Company subsidiary Suzhou Shengdiya Biopharmaceutical Co., Ltd. received a Notice of Acceptance from the National Medical Products Administration for the new indication application of SHR-A1811 for treating locally advanced or metastatic HER2-positive breast cancer patients who have previously received one or more anti-HER2 therapies, and it has been included in the priority review process [1] Group 1 - SHR-A1811-Ⅲ-301 study is a randomized, open-label, positive drug-controlled, multi-center Phase III clinical trial designed to compare the efficacy and safety of SHR-A1811 with pyrotinib combined with capecitabine in HER2-positive breast cancer patients who have previously received one or more anti-HER2 therapies [2] - The primary endpoint is progression-free survival (PFS) assessed by a blinded independent radiology committee (BIRC) based on RECIST v1.1, with secondary endpoints including investigator-assessed PFS, overall survival (OS), objective response rate (ORR), and duration of response (DoR) [2] - In July 2025, the Independent Data Monitoring Committee (IDMC) reviewed the data and confirmed that the primary endpoint of BIRC-assessed PFS met the pre-specified superiority criteria, indicating that SHR-A1811 significantly reduces the risk of disease progression/death compared to the control group, with good safety [2] Group 2 - SHR-A1811 was approved for marketing in China in May 2025 for the treatment of adults with unresectable locally advanced or metastatic non-small cell lung cancer (NSCLC) who have HER2 (ERBB2) activating mutations and have previously received at least one systemic therapy [3]