2025年9月，创新药研发平台型企业百奥赛图在过去一个月连续发布多项重要合作进展。无论是与跨国 巨头默克在抗体偶联脂质纳米颗粒（LNP）递送方案上的探索，还是与德国Tubulis的抗体许可协议，亦 或是合作伙伴IDEAYA在双抗ADC联合治疗的推进，都进一步印证了公司"双业务线"战略布局的前瞻性 与国际竞争力。 双业务线逻辑：模式动物+抗体平台 百奥赛图的发展战略核心在于"双业务线"： 与默克再度携手：探索抗体偶联LNP递送 9月初，百奥赛图宣布与默克（Merck）签署抗体选择权评估协议，围绕抗体偶联LNP递送展开合作。百 奥赛图将基于其RenMice®平台提供全人抗体，由默克评估其在LNP系统中的可行性。若默克选择行 权，百奥赛图将获得相应首付款、里程碑及分成收益。 这一合作不仅拓展了全人抗体在传统抗体药物之外的应用场景，也展示了抗体在核酸药物递送系统中潜 在的关键作用。业内人士认为，随着mRNA、siRNA等核酸疗法快速发展，精准递送已成为瓶颈，而抗 体偶联LNP有望提供更高效和更靶向的解决方案。 Tubulis行权：全人抗体进入ADC研发 紧随其后，9月中旬，百奥赛图宣布与德国新锐ADC企业Tubuli ...

Group 1 - The biopharmaceutical B-class stocks have been strong performers in the Hong Kong stock market this year, with 26 stocks in the sector doubling in value, including Kintor Pharmaceutical (06990.HK), Lepu Biopharma (02157.HK), and Hengrui Medicine (02142.HK) [2] - BlissBio Inc. (百力司康) has recently submitted its IPO application, with Goldman Sachs, Huatai International, and Jianyin International serving as joint sponsors [2][3] - The founders of BlissBio, Dr. Wei Ziping and Dr. Zhou Yuhong, have extensive academic backgrounds and over 25 years of experience in drug development, having previously worked at major pharmaceutical companies [3] Group 2 - BlissBio is focused on developing next-generation antibody-drug conjugates (ADCs), which combine the targeting ability of antibodies with the cytotoxicity of potent drugs, aiming to improve treatment efficacy while reducing off-target toxicity [3][4] - The ADC therapy is recognized as one of the fastest-growing cancer treatment modalities, often referred to as a "golden track" [4] - BlissBio has completed five rounds of financing, with participation from several institutional investors, including Hillhouse Capital and Eisai [4] Group 3 - The company has signed a licensing agreement with Eisai, granting exclusive global rights (excluding Greater China) to use a specific linker in ADCs targeting HER2, EGFR, and B7-H3 [7] - BlissBio has four ADC products in clinical stages targeting HER2, EGFR, B7-H3, and CD73, with three utilizing the linker from Eisai [7][8] - In April 2023, BlissBio entered into a collaboration agreement with Eisai for the development and commercialization of BB-1701, which includes potential milestone payments of up to $2 billion [9] Group 4 - BlissBio currently has no commercialized products, and its revenue for 2023 and 2024 is projected to be RMB 180.2 million and RMB 22.6 million, respectively, primarily from collaboration agreements with Eisai [10][11] - The company is expected to incur significant losses, with projected annual losses of RMB 206.4 million in 2023 and RMB 556.6 million in 2024, largely due to high R&D costs and the impact of redemption liabilities from investor agreements [10][11] Group 5 - The IPO is crucial for BlissBio to secure funding for ongoing R&D and commercialization efforts, with plans to use the raised funds for advancing core product development, supporting existing pipeline assets, and enhancing technology platforms [12]

Core Viewpoint - The article discusses the challenges and opportunities faced by Baileiskang, a biopharmaceutical company, particularly after the termination of its collaboration with the Japanese pharmaceutical company Eisai, which has cast a shadow over its commercialization prospects for its core product BB-1701 [3][12][15]. Group 1: Company Background - Baileiskang was co-founded by two overseas PhD graduates, Wei Ziping and Zhou Yuhong, who have extensive experience in the pharmaceutical industry [5][6]. - The company focuses on developing innovative drugs targeting breast cancer and non-small cell lung cancer, with its core product BB-1701 currently in critical stages of clinical development [5][9]. Group 2: IPO and Market Context - In the first half of 2025, there is a surge in IPO applications on the Hong Kong Stock Exchange, particularly from the biopharmaceutical sector, driven by supportive listing regulations for innovative companies [4]. - Baileiskang submitted its IPO application on June 29, 2025, aiming to attract capital despite the challenges posed by its recent partnership termination [5][31]. Group 3: Collaboration with Eisai - Baileiskang had a significant partnership with Eisai, which included a potential $2 billion in milestone payments for the development and commercialization of BB-1701 [12]. - The sudden termination of this collaboration in May 2025 has left Baileiskang to independently manage the global development and commercialization of BB-1701, raising concerns about its financial stability and operational capabilities [12][15]. Group 4: Financial Challenges - Baileiskang has not yet achieved profitability, reporting net losses of 206 million yuan in 2023 and 557 million yuan in 2024, with a significant increase in losses year-over-year [24]. - The company has raised approximately 874 million yuan through five rounds of financing, but faces pressure from redemption clauses tied to its funding agreements, which could trigger cash buybacks under certain conditions [25][28]. Group 5: Competitive Landscape - The ADC (antibody-drug conjugate) therapy market is highly competitive, with several established players already having approved HER2 ADC drugs, which poses a challenge for Baileiskang's BB-1701 targeting the "resistant patient" segment [20][21]. - The company must navigate potential pricing pressures and market competition to successfully commercialize its product [21].