KRAS和TP53共同突变预测了肺腺癌中免疫检查点阻塞的益处
Jan Budczies1,2,3, Eva Romanovsky4, Martina Kirchner4
1Institute of Pathology, Heidelberg University Hospital, Heidelberg, Germany. jan.budczies@med.uni-heidelberg.de.
British journal of cancer
|June 12, 2024
概括
同时发生的KRAS和TP53突变改善了在晚期肺癌中免疫治疗益处的预测. 这一发现在免疫治疗队列中得到了验证,为患者选择提供了更敏感的生物标志物.
科学领域:
- 在瘤学瘤学.
- 遗传学 遗传学是一种遗传学.
- 免疫治疗是一种免疫疗法.
背景情况:
- 目前在高级非小细胞肺癌 (NSCLC) 免疫治疗中的预测生物标志物具有有限的准确性.
- 激活KRAS和致病TP53突变被探索以提高预测价值.
研究的目的:
- 研究KRAS和TP53突变作为先进NSCLC中免疫治疗反应的预测生物标志物的潜力.
- 分析与KRAS和TP53共同突变相关的分子特征.
主要方法:
- 对713名患有晚期肺腺癌的免疫治疗患者的分析.
- 基于KRAS和TP53突变状态的治疗益处的分层.
- 利用TCGA数据来探索KRASmut/TP53mut瘤的分子特征.
主要成果:
- 观察到KRAS和TP53突变之间的显著相互作用,改善了免疫治疗患者的整体生存预测 (HR=0.53,p=0.0021).
- 克拉斯/TP53共同突变在免疫治疗队列中表现出更强的益处,但在手术队列中没有.
- 突变TP53的瘤呈现出更高的瘤突变负担,增殖和PD-L1mRNA表达. 在KRASmut/TP53mut瘤中发现了包括CX3CL1在内的独特的转录组特征.
结论:
- KRAS/TP53共同突变是NSCLC免疫治疗益处的强有力的预测因素.
- 这种共同突变与明显的分子瘤特征有关.
- 用标准的下一代测序 (NGS) 面板对KRAS和TP53进行突变测试是可行的.
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