Imfinzi联合tremelimumab在肝癌中显示出延长OS的益处

2022-01-24 Allan MedSci原创

阿斯利康表示,使用 STRIDE 方案的患者中位生存时间为 16.4 个月,而索拉非尼组为 13.8 个月。此外,估计有 40.5% 接受 STRIDE 的患者在两年内仍然存活,而索拉非尼组的这一比例

阿斯利康近日公布了III期HIMALAYA研究的更多结果,称在其 PD-L1 阻滞剂 Imfinzi (durvalumab) 中添加tremelimumab可将不可切除的肝癌患者的死亡风险降低22%。该试验将于本周晚些时候在美国临床肿瘤学会胃肠癌 (ASCO-GI) 研讨会上公布。

HIMALAYA研究评估了Imfinzi单一疗法和STRIDE方案,该方案包括在 Imfinzi 中添加单次启动剂量的 tremelimumab,然后每四周使用一次 Imfinzi。该研究纳入了1324例无法切除的晚期肝细胞癌患者,这些患者之前未接受过全身治疗。

阿斯利康表示,使用 STRIDE 方案的患者中位生存时间为 16.4 个月,而索拉非尼组为 13.8 个月。此外,估计有 40.5% 接受 STRIDE 的患者在两年内仍然存活,而索拉非尼组的这一比例为 32.6%。

从安全的角度来看,阿斯利康表示 STRIDE 方案和单独的 Imfinzi 方案的安全性与每种药物的已知安全性一致,并且没有发现新的安全信号。然而,使用 STRIDE 组合的 3 级或 4 级治疗相关不良事件 (AE) 大约是单独使用 Imfinzi 的两倍,发生率分别接近 26% 和 13%。

Tremelimumab 是一种针对人 T 细胞受体蛋白细胞毒性 T 淋巴细胞相关蛋白 4 (CTLA4) 的人免疫球蛋白 (Ig) G2 单克隆抗体,具有潜在的免疫检查点抑制和抗肿瘤活性。Tremelimumab 与活化 T 淋巴细胞上的 CTLA4 结合并阻断抗原呈递细胞配体 B7-1 (CD80) 和 B7-2 (CD86) 与 CTLA4 的结合,从而抑制 CTLA4 介导的 T 细胞活化下调。这导致细胞毒性 T 淋巴细胞 (CTL) 介导的针对癌细胞的免疫反应。

继 Tremelimumab 的一系列临床失败后,阿斯利康终于在去年证实,与单独化疗相比,将Tremelimumab添加到 Imfinzi+化疗中能够显著延长肺癌患者的总生存期。

 

原始出处:

https://firstwordpharma.com/story/5482433

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    2022-12-07 tongyongming
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    2022-05-31 snf701207
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    2022-01-26 swallow

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