中国生物制药:“TQB6411 (EGFR/c-Met双抗ADC)”临床试验申请获CDE受理

智通财经
03 Apr

智通财经APP讯,中国生物制药(01177)发布公告,本集团自主研发的“TQB6411 (EGFR/c-Met双抗ADC)”已向中国国家药品监督管理局药品评审中心(“CDE”)提交临床试验申请,并获得受理。

表皮生长因子受体(EGFR)和细胞间质上皮转换因子(c-Met)是两种重要的肺癌驱动基因,都属于受体酪氨酸激酶,在下游信号转导方面具有协同作用。联合靶向EGFR和c-Met可以同时阻断PI3K/AKT/ mTOR与Ras/Raf/Mek双通路,通过抑制代偿性激活,增强抗肿瘤效应。

TQB6411是一种靶向EGFR、c-Met的抗体偶联药物(ADC),静脉注入血后抗体部分与肿瘤细胞表面 EGFR、c-Met结合阻断EGFR、c-Met信号通路,ADC经细胞内吞并转运到溶酶体,连接子经酶切后释放出DDDXD,导致DNA损伤和细胞死亡。体外研究显示,TQB6411具有抗体依赖细胞介导的细胞毒性作用(ADCC),并且DDDXD能通过旁杀效应杀死相邻肿瘤细胞。

TQB6411已完成系统的药理学、药代动力学和安全性验证,具有明确的抗肿瘤作用机制,对EGFR及 c-Met不同表达和耐药的阳性细胞均有明显的抑瘤作用,体外活性与同靶点药物AZD9592相当,体内活性明显优于AZD9592。

除TQB6411外,本集团在EGFR和c-Met靶点领域,还布局有TQB2922 (EGFR/c-Met双抗)并已于 2023年12月启动I期临床,TQB3002 (四代EGFR抑制剂)位于I期临床并已于美国获批临床试验,以及 FHND9041 (三代EGFR抑制剂)位于III期临床。本集团将加速推进该等产品的临床开发进程,聚焦全球尚未被满足的临床需求,为患者提供更优的治疗选择。

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