基于PD-L1表达的IV期EGFR突变NSCLC的综合临床特征和结果
Jonathan W Lee1, Xiao Jin2, Stephanie Bogdan1
1New York-Presbyterian Weill Cornell Medical Center, 525 E 68th St, NY, NY, 10065, USA.
Cancer treatment and research communications
|January 23, 2026
概括
在EGFR突变的NSCLC中,PD-L1阴性患者对Osimertinib表现出更好的反应. PD-L1阳性与反应减少的趋势和进展和死亡风险增加有关.
科学领域:
- 在瘤学瘤学.
- 免疫治疗是一种免疫疗法.
- 分子生物学分子生物学
背景情况:
- 皮表皮生长因子受体 (EGFR) 和编程死亡配体1 (PD-L1) 是癌症免疫规避的关键.
- 用奥西默蒂尼布治疗的EGFR突变非小细胞肺癌 (NSCLC) 的PD-L1表达和临床结果之间的关系尚未完全理解.
研究的目的:
- 研究PD-L1表达水平与临床病理特征之间的关联.
- 评估EGFR突变 (EGFR-mt) 第四期NSCLC患者对Osimertinib (Osi) 的反应.
- 分析基于PD-L1表达的无进展生存率 (PFS) 和总生存率 (OS).
主要方法:
- 对101名EGFR-mt第四期NSCLC患者的回顾性分析,这些患者接受了第一线Osimertinib治疗.
- 从2018年至2023年期间从纽约三家医院收集的数据.
- 无进展生存率 (PFS) 和总生存率 (OS) 通过日志等级测试和Cox比例危险模型计算.
主要成果:
- 51%的患者患有PD-L1阴性疾病; 11%的PD-L1≥50%.
- 总体应答率为85%,有利于PD-L1阴性疾病 (92%对78%).
- 在多变量分析中,PD-L1阳性与显著较低的响应几率 (OR 0.29,p=0.046) 和减少响应,增加进展和死亡的趋势有关.
结论:
- PD-L1阴性与EGFR突变NSCLC中对一线奥西默提尼布的更高反应率有关.
- 虽然没有统计学意义,PD-L1阳性显示出更糟糕的结果的趋势,包括PFS和OS.
- 需要进一步的研究来澄清PD-L1在指导EGFR突变NSCLC治疗决策中的作用.
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