基于脑脊髓液cfDNA的分子评估切除程度和质瘤的预后
Jun Wu1, Zhiqiang Liu2, Tianxiang Huang1
1Departments of Neurosurgery, and National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
Communications medicine
|February 2, 2026
概括
脑脊液无细胞DNA (cfDNA) 准确地反映了质瘤遗传学,并有效地衡量了手术切除的成功. 手术后cfDNA分析可以预测患者的预后和生存结果.
科学领域:
- 神经瘤学神经瘤学
- 分子诊断学 分子诊断学
- 基因组医学是基因组医学.
背景情况:
- 质瘤,包括多形质母细胞瘤 (GBM),由于它们的透生长和艰难的手术切除,挑战大脑瘤.
- 准确评估手术切除程度对于预测患者预后和质瘤患者的存活率至关重要.
- 脑脊液 (CSF) 无细胞DNA (cfDNA) 被探索为评估质瘤切除程度的潜在定量生物标志物.
研究的目的:
- 调查CSFcfDNA作为评估质瘤外科切除程度的生物标记物的实用性.
- 评估CSFcfDNA变化与患者预后之间的相关性.
- 建立cfDNA作为术后管理的非侵入性工具.
主要方法:
- 下一代测序 (NGS) 用于分析瘤DNA和CSF cfDNA中的基因组变化.
- 在瘤组织和CSFcfDNA突变之间进行了对应性分析.
- 评估了cfDNA中平均突变等位基因频率 (MAF) 和瘤突变负担 (TMB) 的术后变化,并与整体存活率 (OS) 相关联.
主要成果:
- 在CSFcDNA和瘤组织之间观察到高一致性 (83.50%),特别是关键突变 (TERT,TP53,PTEN,IDH1).
- 在手术后的CSFcfDNA中检测到平均MAF和TMB的显著减少.
- 手术后的MAF减少≥90%,与显著改善的OS相关,独立于切除程度或病变数量.
结论:
- 脑流中cfDNA作为一种敏感且具有代表性的生物标志物,用于质瘤的遗传特征.
- cfDNA分析有效地测量了手术切除疗效.
- 脑液cfDNA具有作为改善术后管理和预测质瘤患者预后的非侵入性生物标志物的潜力.
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