【港股通】石药集团(01093)附属与RADIANCE BIOPHARMA就SYS6005订立独家授权协议

金吾财讯
19 Feb

金吾财讯 | 石药集团(01093)公布,公司之附属公司石药集团巨石生物制药有限公司(“石药巨石”)已与Radiance Biopharma,Inc.就集团的重组抗人类受体酪氨酸激酶样孤儿受体1(ROR1)抗体偶联药物SYS6005在美国、欧盟、英国、瑞士、挪威、冰岛、列支敦士登、阿尔巴尼亚、黑山、北马其顿、塞尔维亚、澳大利亚和加拿大的开发及商业化订立独家授权协议。根据该协议的条款,石药巨石同意授予Radiance Biopharma在该地区开发及商业化该产品的独家授权。石药巨石将收取1,500万美元的首付款,并有权收取最高1.5亿美元的潜在开发及监管里程碑付款及最高10.75亿美元的潜在销售里程碑付款,以及收取根据该产品于该地区的年度销售净额计算的分层销售提成。通过利用集团专有的酶催化定点抗体偶联技术,该产品能将有效的有丝分裂抑制剂MMAE靶向性地导向ROR1表达的癌细胞,而其连接子的稳定性有助于将高浓度的MMAE送达肿瘤中,并同时通过减少不良的全身暴露量而将副作用减低。与正常组织相比,ROR1在多种血液恶性肿瘤及实体肿瘤中高度表达,其表达与疾病进展及治疗反应密切相关。在多种恶性肿瘤中观察到的ROR1异常表达及相关的促增殖信号,使ROR1成为抗癌药物开发中一个具有吸引力的治疗靶点。该产品的设计具有均匀的DAR分布、更高稳定性的专有连接子及较低的药物抗体比率,以提高血液稳定性及肿瘤部位特异性药物释放,从而获得更好的安全性及疗效。

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