Ge Long Hui·2025-12-12 09:00Core Viewpoint - China Biologic Products (01177.HK) has received approval from the National Medical Products Administration (NMPA) for its self-developed innovative drug, Kumosily, for the treatment of HR-positive, HER2-negative locally advanced or metastatic breast cancer patients who have experienced disease progression after endocrine therapy [1][2]. Group 1: Drug Approval and Mechanism - Kumosily is a globally first-in-class triple inhibitor targeting CDK2/4/6, showing selective inhibition of CDK4 kinase, which helps delay resistance to CDK4/6 inhibitors and reduces the risk of bone marrow suppression [1]. - The drug has been approved for use in combination with Fulvestrant for second-line treatment [1]. Group 2: Clinical Trial Results - In the pivotal Phase III clinical trial (TQB3616-III-01), the combination of Kumosily and Fulvestrant demonstrated a median progression-free survival (mPFS) of 16.62 months, significantly extending the mPFS by 9.16 months compared to the Fulvestrant group (7.46 months) [2]. - The risk of disease progression or death was reduced by 64% (HR=0.36, p<0.0001), and the objective response rate (ORR) increased significantly to 40.21% compared to 12.12% (p<0.0001) [2]. - Most treatment-related adverse events (TRAEs) were manageable and of grade 1-2, with minimal grade ≥3 hematological toxicity, and no TRAEs leading to treatment discontinuation or death [2]. Group 3: Future Development and Pipeline - Besides the approved second-line indication, a first-line application for HR+/HER2- breast cancer has been submitted to NMPA, with expectations for approval by July 2025 [3]. - The company has completed patient enrollment for the Phase III clinical trial for the adjuvant treatment indication, aiming for gradual approvals in the next two years [3]. - The company is focused on the breast cancer field, developing a pipeline that covers all molecular subtypes, including HR-positive, HER2-positive, low HER2 expression, and triple-negative breast cancer, with a comprehensive treatment strategy from new adjuvant to later lines [3].