Core Insights - Four环医药's subsidiary, XuanZhu Biotechnology, achieved a significant breakthrough with the innovative drug Bireociclib, which has shown promising results in the BRIGHT-2 clinical trial for HR+/HER2- advanced breast cancer [1][2] Group 1: Clinical Trial Details - The BRIGHT-2 study is a randomized, double-blind Phase III trial led by Academician Xu Binghe from the Chinese Academy of Medical Sciences, focusing on advanced breast cancer patients in China [1] - A total of 305 HR+/HER2- advanced breast cancer patients were recruited from 64 centers across China, with a median age of 55 years [1] - The patient population is characterized by a high proportion of Luminal B type, late-stage diagnosis, and significant treatment challenges, including a 91.5% progression rate during the treatment period [1] Group 2: Efficacy Results - The combination of Bireociclib and Fulvestrant demonstrated significant efficacy, with a median progression-free survival (PFS) of 12.94 months compared to 7.29 months for the Fulvestrant-only group [2] - Objective response rate in the combination group was 39.7%, indicating tumor shrinkage and symptom relief, particularly benefiting patients with endocrine resistance and liver metastases [2] - The results further solidify Bireociclib's position as a "Best in Class" CDK4/6 inhibitor, showcasing its effectiveness even in a more complex patient population [2] Group 3: Future Directions - The publication of these results underscores Four环医药's commitment to innovation and its capability in developing effective treatment options for breast cancer patients globally [2] - The company plans to continue investing in research and development to accelerate the translation of innovative results into clinical practice, contributing to global health [2]
四环医药(00460)：创新药吡洛西利联合氟维司群治疗HR+/HER2-晚期乳腺癌临床III期期中分析结果在《Nature Communications》学术期刊发表