贝莱峰会的分析验证和临床敏感性TM 2.0脑脊液液体活检测-用于中枢神经系统恶性瘤的扩展综合基因组分析平台
Sakshi Khurana1, Viriya Keo1, Alexandra Larson1
1Belay Diagnostics, Suite 530, 1375 W. Fulton St., Chicago, IL 60607, USA.
Cancers
|January 28, 2026
概括
贝莱峰会TM 2.0试验使用脑脊液 (CSF) 准确地描述了中枢神经系统 (CNS) 瘤中的基因组变化. 这种液体活检方法对于无法接受传统组织检测的患者来说是有价值的.
科学领域:
- 神经瘤学神经瘤学
- 基因组学就是基因组学.
- 分子诊断学 分子诊断
背景情况:
- 国家综合癌症网络 (NCCN) 的指导方针建议下一代测序 (NGS) 用于中央神经系统 (CNS) 恶性瘤的综合基因组分析 (CGP).
- 由于患者因素和血脑屏障 (BBB) 限制了血液体活检,以组织为基础的中枢神经系统瘤测试往往是不可行的.
- 大脑脊髓液 (CSF) 为检测瘤衍生的核酸提供了一个可行的替代方案.
研究的目的:
- 通过分析和临床验证Belay SummitTM 2.0试验进行中枢神经系统瘤综合基因组分析 (CGP).
- 用脑脊液 (CSF) 作为瘤衍生的核酸来源来评估试验的性能.
- 为了确定基于CSF的CGP对中枢神经系统恶性瘤的临床实用性.
主要方法:
- 贝莱峰会TM 2.0是一种高通量CGP试验,检测单核酸变异 (SNV),小插入和删除 (Indels),复制数变异 (CNV),基因融合,拼接变异,微卫星不稳定性 (MSI) 和瘤突变负担 (TMB).
- 分析验证使用了68个样本,其中15 ng的CSF衍生的总核酸 (tNA),评估了所有变异类型的检测.
- 临床有效性涉及来自中枢神经系统原发性和转移性瘤患者的118个脑脊髓样本.
主要成果:
- 分析验证表明,通过15 ng的CSFtNA,对所有变异类型的稳定检测.
- 该试验实现了SNV和Indels的96.7%的分析灵敏度,在0.3%的变异异基因频率下具有100%的检测极限 (LoD).
- 临床评估显示96%的灵敏度和98%的特异性通过CSF检测中枢神经系统瘤中的基因组变化.
结论:
- 贝莱峰会TM 2.0测定提供了使用CSF的中枢神经系统瘤的准确和可重现的基因组分析.
- 这种基于CSF的方法适用于基于组织的测试是不可行的,不安全的或临床上不适合的患者.
- 这些发现支持临床采用CSF液体活检用于中枢神经系统恶性瘤的分子特征.
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