Mei Ri Jing Ji Xin Wen·2025-04-28 12:32Core Viewpoint - The communication meeting held by Kangfang Biotech was prompted by a significant stock price drop of its overseas partner Summit Therapeutics, following the release of preliminary overall survival (OS) data for its dual-target antibody Ivosidenib, which led to market volatility and investor concerns about clinical data interpretation [1][4][5]. Group 1: Clinical Data and Market Reaction - The initial OS data for Ivosidenib was based on immature data and should be interpreted cautiously, as it was a mid-term analysis required by the National Medical Products Administration [2][10]. - The market had high expectations for Ivosidenib, especially after its previous clinical data showed significant efficacy compared to Keytruda (K drug), with a median progression-free survival (mPFS) of 11.14 months versus 5.82 months for K drug, and a hazard ratio (HR) of 0.51, indicating a 49% reduction in disease progression or death risk [3][4]. - Following the release of the OS data, Summit Therapeutics' stock fell by 36%, reflecting the market's reaction to the perceived overvaluation based on previous expectations [4][9]. Group 2: Company Strategy and Future Outlook - Kangfang Biotech's chairman emphasized that the OS data was not the primary endpoint of the study, and the focus should remain on the primary endpoint of progression-free survival (PFS) and the trend in OS [6][7]. - The company aims to provide innovative treatment options for lung cancer patients, marking a significant milestone for both Kangfang Biotech and the Chinese innovative drug industry [8][9]. - Kangfang Biotech is committed to advancing its clinical research in alignment with global standards, with confidence in the success of its ongoing studies, including the HARMONi-7 trial in the U.S. [11].