在局部晚期直肠癌中,ctDNA对新辅助治疗有反应
Florian Bürtin1, Liema Elias2, Sebastian Hinz1
1Department of General Surgery, Rostock University Medical Center, Rostock, Germany.
Journal of cancer research and clinical oncology
|September 22, 2024
概括
液体活检是一种微创的技术,可以在直肠癌的新辅助治疗期间监测瘤突变. 无细胞DNA (ctDNA) 分析显示对治疗的反应,有助于常规的临床整合.
科学领域:
- 在瘤学瘤学.
- 分子诊断学 分子诊断学
- 基因组学就是基因组学.
背景情况:
- 液体活检为研究瘤突变提供了一种最小侵入性的方法.
- 在临床瘤学中,早期发现和监测癌症进展至关重要.
研究的目的:
- 评估使用液体活检进行分子治疗监测的可行性,用于接受新辅助放射性化学治疗的局部晚期直肠癌患者.
- 调查循环瘤DNA (ctDNA) 变化与对新辅助治疗的临床反应之间的相关性.
主要方法:
- 对接受不同新辅助疗法的17名局部晚期直肠癌患者的回顾性分析.
- 使用127基因小组,在新辅助放射治疗前后从液体活检中超深测序无细胞DNA (ctDNA).
- 生物信息分析用于识别体质突变,并将其与生殖系或衰老变异区分开来.
主要成果:
- 在71%的患者中检测到体质突变 (12/17).
- ctDNA分析显示,8名患者的反应减少,4名患者的反应增加或混合.
- 在ctDNA分析和临床反应之间没有观察到统计学意义上的相关性 (Dworak评估).
结论:
- 循环瘤DNA (ctDNA) 表明对直肠癌中新辅助疗法的反应性.
- 液体活检很容易被整合到日常临床程序中,用于分子治疗监测.
- 需要进一步的翻译研究来探索这种方法的全部潜力.
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