Core Viewpoint - Kangfang Biopharma's dual antibody drug Ivosidenib has successfully challenged PD-1 monoclonal antibodies in head-to-head trials, indicating potential shifts in the PD-1 market for immunotherapy [1][6]. Company Summary - On April 23, Kangfang Biopharma's stock price reached a historic high of 100 HKD per share following the announcement of Ivosidenib's success in head-to-head trials against BeiGene's Tislelizumab [2]. - Ivosidenib (PD-1/VEGF dual antibody) demonstrated significant clinical benefits in a Phase III clinical trial for advanced squamous non-small cell lung cancer (sq-NSCLC), achieving the primary endpoint of progression-free survival (PFS) [3]. - The trial results showed that Ivosidenib combined with chemotherapy outperformed Tislelizumab combined with chemotherapy, with significant PFS benefits observed in both PD-L1 positive and negative populations [3]. Industry Summary - Ivosidenib is the world's first PD-1/VEGF dual-specific tumor immunotherapy drug, approved for use in China for specific lung cancer patients as of May 2024 [4]. - The drug is currently undergoing head-to-head clinical trials to expand its indications, with successful outcomes potentially leading to significant commercial value [4]. - The PD-1 market is highly competitive, with BeiGene's Tislelizumab holding a leading market share in China, generating revenue of 621 million USD in 2024 [4]. - Merck's Keytruda is the highest-selling PD-1 drug globally, with projected revenues of 29.482 billion USD in 2024 [5]. - Lung cancer remains the most prevalent and deadly malignancy worldwide, with PD-1 combined chemotherapy being the current standard first-line treatment for non-small cell lung cancer [6].