Nan Fang Du Shi Bao·2025-05-21 11:12Core Insights - On May 20, 2023, 3SBio announced a significant agreement with Pfizer, granting exclusive global rights (excluding mainland China) for the development, production, and commercialization of its innovative PD-1/VEGF bispecific antibody SSGJ-707 [2] - The deal includes an upfront payment of $1.25 billion, setting a record for upfront payments for domestic innovative drugs, and potential milestone payments totaling up to $4.8 billion, bringing the total potential deal value to $6.05 billion (approximately 43 billion RMB) [2] - Following the announcement, 3SBio's stock surged over 35% on May 20 and continued to rise by over 8% the next day [2] Company Developments - SSGJ-707 has shown excellent efficacy in treating non-small cell lung cancer (NSCLC), with promising objective response rates (ORR) and disease control rates (DCR) in clinical trials [3] - The drug has received breakthrough therapy designation from the National Medical Products Administration (NMPA) for first-line treatment of PD-L1 positive locally advanced or metastatic NSCLC, and has also received IND approval from the FDA [3] - Clinical research for SSGJ-707 is also advancing in the treatment of colorectal cancer and gynecological tumors [3] Market Reactions - The capital market reacted strongly to the announcement, with 3SBio's stock price increasing significantly [2] - Other companies in the PD-1/VEGF bispecific antibody space, such as Kangfang Biologics, experienced stock fluctuations following the news, indicating a competitive landscape [5] Strategic Considerations - Pfizer's interest in the PD-1/VEGF bispecific antibody space is part of a broader strategy, as it has previously engaged in collaborations in this area [4] - The oncology segment of Pfizer is facing challenges with its small molecule drugs, prompting a shift towards ADC (antibody-drug conjugate) strategies, which are becoming a research focus [6] - The combination of ADCs with high-quality bispecific antibodies is seen as a potential avenue for enhancing treatment efficacy in oncology [6]