根据第一线转移性结直肠癌的治疗强度的ctDNA变异
Adrien Grancher1, Ludivine Beaussire-Trouvay2, Virginie Vernon1
1Normandie Univ, UNIROUEN, Inserm U1245, IRON group, Normandy Centre for Genomic and Personalized Medicine and Department of Hepato-gastroenterology and Digestive Oncology, Rouen University Hospital, Rouen, France.
British journal of cancer
|March 16, 2025
概括
循环瘤DNA (ctDNA) 水平的早期变化与转移性结直肠癌 (mCRC) 的治疗强度相关. 较高的ctDNA减少预测了改善的生存率,无论治疗方案的强度如何.
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) 分析正在成为监测转移性结直肠癌 (mCRC) 治疗疗效的工具.
- 以前的研究表明ctDNA动态与治疗结果之间存在联系.
- 第一线治疗强度对ctDNA变异的影响尚未完全阐明.
研究的目的:
- 评估循环瘤DNA (∆ctDNA) 变化与mCRC.患者的第一线治疗强度之间的关联.
- 为了确定与治疗强度相关的早期∆ctDNA动力学的预后价值.
主要方法:
- 根据一线治疗强度,患者被分为两组:≤2种药物和≥3种药物.
- ∆ctDNA水平从基线分析到周期3-4 (C3-4).
- 分组被定义为∆ctDNA ≥80% (无法检测),∆ctDNA ≥80% (可检测),以及∆ctDNA <80%;评估了无进展生存率 (PFS) 和总生存率 (OS).
主要成果:
- 在84.9%的患者中检测到治疗前ctDNA.
- ∆ctDNA≥80% (不可检测) 在接受≥3种药物组相比,在接受≤2种药物组中明显更频繁 (51.5%对32.7%,p=0.015).
- 与其他∆ctDNA亚组相比,在两种治疗强度组中,获得∆ctDNA≥80% (不可检测) 的患者在PFS和OS方面表现得明显更长.
结论:
- ctDNA (∆ctDNA) 的早期变化与mCRC的第一线治疗强度有关.
- 在治疗早期实现不可检测的ctDNA状态与改善的生存结果有关.
- ∆ctDNA动力学作为mCRC的有价值的预后指标,受治疗强度的影响.
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