Innoviva (INVA) 2025 Conference September 04, 2025 01:00 PM ET Speaker1Okay, terrific. Welcome back from lunch, everyone, and pleasure to be up here for the next session at the Global Healthcare Conference. I'm Steve Seedhouse, and I'm joined on stage by the next participating company, Innoviva. We have with us CEO Pavel Raifeld. Really a privilege. Welcome to the conference and looking forward to the conversation. To start, Pavel, I just wanted to open up and maybe pass you the mic, ask you for some introd ...

核心观点 - 公司宣布开发第二款CAPTN-3三特异性抗体IM1305 靶向TROP2抗原 临床前数据显示其在小鼠模型中实现持续肿瘤消退且无复发 并计划于2026年提交IND申请 [1][2][4][7] 技术平台与机制 - CAPTN-3平台通过同时激活先天和适应性免疫系统 在肿瘤微环境（TME）内产生协同反应 克服免疫抑制环境 [2] - IM1305结构包含掩蔽抗CD3臂、抗NKG2A臂和抗TROP2臂 其中抗CD3臂采用可切割掩蔽技术 限制在TME内激活 以减少脱靶细胞因子释放风险并允许更高剂量 [3] - 该平台结合TROP2选择性结合与多效应免疫细胞（T细胞和NK细胞）招募 其免疫突触驱动的细胞毒性可能不依赖TROP2表达密度 [6] 临床前数据 - 在针对三阴性乳腺癌（TNBC）的临床前研究中 低剂量（EC50 1-5 pM）即可诱导显著细胞死亡 并在治疗后实现持续肿瘤消退且无复发 [4] - 有效性验证覆盖多类肿瘤类型 包括TNBC、舌癌、下咽癌、胰腺癌和胃癌 [4] 靶点特征与竞争优势 - TROP2在主要实体瘤（如乳腺癌、肺癌、胃肠道癌、卵巢癌）中广泛表达 且与不良预后相关 [5] - 不同于抗体药物偶联物（ADC）或单特异性抗体 该平台通过双重免疫机制拓展至非ADC适用场景及多样肿瘤类型 [6] - TROP2靶点已有ADC药物临床验证支持 具备广泛治疗潜力 [5] 研发进展与战略 - 首款靶向5T4抗原的三特异性抗体IM1240计划于2026年提交IND申请 [1] - 公司通过优化CAPTN-3平台加速TROP2靶向抗体开发 并扩展合作机会 [7] - 管线还包括靶向CEACAM1的单抗CM24（已完成胰腺癌II期研究）及双抑制剂NT219（处于头颈癌II期研究） [8][9]

REHOVOT, Israel, July 23, 2025 (GLOBE NEWSWIRE) -- Purple Biotech Ltd. ("Purple Biotech" or "the Company") (NASDAQ/TASE: PPBT), a clinical-stage company developing first-in-class therapies that seek to overcome tumor immune evasion and drug resistance, today issued the following letter to shareholders from Chief Executive Officer Gil Efron, highlighting the Company's scientific progress, operational execution, and strategic milestones during the first half of 2025. Dear Shareholders, I am pleased to report ...