免疫遗传多态性预测了接受PD-1/PD-L1阻断治疗的瘤患者的治疗疗效和生存结果
Zhaodan Xin1, Liting You2, Jin Li1
1Department of Laboratory Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan Province 610041, PR China.
International immunopharmacology
|June 13, 2023
概括
三种免疫遗传变异 (ATG7,CD274,TLR4) 预测了对PD-1/PD-L1阻塞疗法的反应. 这些遗传变异可能表明瘤进展的风险增加和癌症患者的无进展生存率较差.
科学领域:
- 免疫遗传学 免疫遗传学
- 癌症生物学 癌症生物学
- 药物基因组学 药物基因组学
背景情况:
- 免疫检查点抑制剂 (ICI),如PD-1/PD-L1阻断剂,对一小部分患者提供有限的益处.
- 瘤免疫系统基因对ICI疗效至关重要,它们的多态可能会影响治疗结果.
- 需要预测性生物标志物来识别可能对PD-1/PD-L1阻塞有反应的患者.
研究的目的:
- 调查免疫遗传变异对PD-1/PD-L1阻塞疗效和患者存活率的预测潜力.
- 在接受ICI治疗的癌症患者中,确定与反应和无进展生存 (PFS) 相关的特定遗传变异.
主要方法:
- 招募和跟踪接受PD-1/PD-L1阻塞的癌症患者.
- 使用蛋白质-蛋白质相互作用网络和Cytoscape识别关键瘤免疫基因.
- 39个选定的遗传变异的基因型定型和与ICI疗效和PFS的关联分析.
主要成果:
- 三种免疫遗传变异 (ATG7 rs7625881,CD274 rs2297136,TLR4 rs1927911) 被确定为反应的预测因素.
- 这些变异的突变等位基因增加了瘤进展的风险 (ORs > 1.4,P < 0.03) 并与较差的PFS相关.
- CD274 rs2297136和TLR4 rs1927911突变基因型是PFS的独立预后因素 (P < 0.02).
结论:
- 在ATG7,CD274和TLR4中的免疫遗传多态性是对PD-1/PD-L1阻塞反应的潜在预测因素.
- 这些发现强调了特定遗传变异在确定ICI治疗患者结果中的作用.
- 进一步验证可能会导致这些变体用于个性化癌症治疗策略的临床应用.
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