多机构研究评估了早期循环瘤DNA动态在免疫检查点抑制剂治疗中在晚期黑色素瘤患者中的作用
Vincent T Ma1,2, Alice Y Zhou3, Amir Forati4
1Department of Medicine, Division of Hematology, Medical Oncology, and Palliative Care, University of Wisconsin-Madison, Madison, WI.
JCO precision oncology
|February 13, 2026
概括
在免疫检查点抑制剂 (ICI) 治疗后早期监测循环瘤DNA (ctDNA) 变化,可以预测晚期黑色素瘤患者的治疗反应和存活率. ctDNA水平的下降表明积极结果的可能性更高.
科学领域:
- 在瘤学瘤学.
- 分子诊断学 分子诊断学
- 癌症基因组学 癌症基因组学
背景情况:
- 循环瘤DNA (ctDNA) 监测显示在预测固体瘤治疗反应方面具有前景.
- 在接受免疫检查点抑制剂 (ICI) 的患者中早期ctDNA动态的实用性需要进一步研究.
- 晚期黑色素瘤治疗反应和生存预测是临床的关键挑战.
研究的目的:
- 评估早期ctDNA变化的作用,以预测ICI治疗的晚期黑色素瘤患者的临床结果.
- 在ICI启动后3-4周评估ctDNA动态作为预测生物标志物.
- 将早期ctDNA动力学与客观反应,疾病控制,无进展生存 (PFS) 和整体生存 (OS) 相关联.
主要方法:
- 多机构对117名患有无法切除的III/IV阶段黑色素瘤患者的现实世界数据进行分析.
- 使用个性化,瘤信息化的ctDNA测定 (Signatera) 进行序列ctDNA水平评估.
- 在治疗前和3-4周后评估ctDNA水平,分析变化 (减少或增加) 以预测结果.
主要成果:
- 减少ctDNA水平与客观反应 (OR, 23.54) 和疾病控制 (OR, 30.56) 的更高几率显著相关.
- 显示ctDNA减少的患者表现出明显改善的无进展生存 (PFS) (HR,0.18) 和整体生存 (OS) (HR,0.28).
- 早期ctDNA动态被证明是治疗疗效和患者预后的强有力的预测指标.
结论:
- 早期ctDNA动态 (ICI启动后3-4周) 可以作为预测性生物标志物,用于治疗反应和晚期黑色素瘤的生存.
- 这种方法为早期治疗监测和风险分层提供了潜在的战略.
- 需要进行更大的前性研究来验证ICI治疗中早期ctDNA变化的临床实用性.
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