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通过瘤免疫微环境预测子宫内膜癌免疫向治疗的反应:一个多中心的观察性研究
Anastasia Maltseva1, Anna Kalinchuk1, Nataliya Chernorubashkina2
1Cancer Research Institute, Tomsk National Research Medical Center, Russian Academy of Sciences, Tomsk 634050, Russia.
International journal of molecular sciences
|April 13, 2024
概括
瘤微环境分析显示CD20+B淋巴细胞和CD8/CD20比率预测了晚期子宫内膜癌患者对Pembrolizumab和Lenvatinib的反应. 这些生物标志物可以识别可能从这种免疫疗法组合中受益的患者.
科学领域:
- 在瘤学瘤学.
- 免疫治疗是一种免疫疗法.
- 癌症生物标志物 癌症生物标志物
背景情况:
- 晚期MSS/pMMR子宫内膜癌对Pembrolizumab和Lenvatinib联合治疗的响应率有限.
- 伦瓦提尼布调节瘤微环境,以增强Pembrolizumab的疗效.
- 确定预测性生物标志物对于在这种治疗环境中选择患者至关重要.
研究的目的:
- 调查瘤微环境参数作为预测标志物,用于在晚期MSS/pMMR子宫内膜癌中对Pembrolizumab和Lenvatinib的反应.
- 评估特定免疫细胞种群的预后价值及其在预测治疗反应和无进展生存的比率.
主要方法:
- 一项观察性研究涉及28名患有晚期MSS/pMMR子宫内膜癌的患者,这些患者接受了Pembrolizumab和Lenvatinib治疗.
- 与TSA相关的多重免疫光学被用于分析治疗前瘤样本中的免疫细胞透 (CD8 +,CD20 +,FoxP3 +,CD163 +).
- 统计分析比较了免疫细胞比例和响应者与非响应者之间的比率.
主要成果:
- 与未响应者相比,在治疗响应者中观察到CD20+B淋巴细胞和CD8-CD20淋巴细胞比率较高 (分别为p=0.0114和p=0.0031).
- 这些生物标志物表现出高灵敏度 (85.71%) 和特异性 (70.59%的CD20+,85.71%的CD8/CD20比率).
- CD20+B淋巴细胞比例和CD8-CD20淋巴细胞比率是治疗反应和无进展生存时间的显著预后因素.
结论:
- CD20+B淋巴细胞和子宫内膜癌层中的CD8-CD20淋巴细胞比率是对Pembrolizumab和Lenvatinib反应的有价值的预后标志物.
- 这些免疫细胞指标可以帮助选择最有可能从这种组合免疫疗法中受益的患者.
- 对瘤微环境组成的进一步研究可以优化针对癌症治疗的患者分层.
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