一个综合的,规模化的方法来解决不确定的意义的TSC2变体
bioRxiv : the preprint server for biology
|February 6, 2026
概括
由于不确定的TSC2基因变异,诊断结核性硬化很困难. 新的高通量测定有效评估变异影响,改善遗传诊断和患者护理.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 生物信息学是一种生物信息学.
背景情况:
- 精确的结核性硬化症诊断受到许多具有不确定意义的TSC2基因变异 (VUS) 的阻碍.
- 传统的功能性检测对大量已识别的TSC2 VUS.不足.
- 开发可扩展的方法对于解决VUS和改善结核性硬化症诊断至关重要.
研究的目的:
- 开发和实施高通量测试,用于分类TSC2误解VUS.
- 评估TSC2误解变异对蛋白质丰度和mTOR通路活性的影响.
- 为了改进基因诊断,使用综合功能数据重新分类TSC2VUS.
主要方法:
- 利用大规模并行测序来测量大约9000个TSC2误解变体的丰富性.
- 开发了一种基于基因组编辑的mTOR通路活动试验,以得分391个误解变异.
- 综合变异丰度和活性数据用于临床队列中的VUS分类.
主要成果:
- 测试的TSC2误解变体中有14.49%显示蛋白质丰度发生变化.
- 17.65%的测试变体表现出修改的mTOR通路活性.
- 76.8%的TSC2错误VUS在临床队列中被根据综合功能数据重新分类.
结论:
- 高通量功能测试为VUS在TSC2分类提供了一个可扩展的解决方案.
- 对TSC2VUS的重新分类可以显著改善结核性硬化症的遗传诊断.
- 增强的诊断能力有可能对患者管理和家庭咨询产生积极影响.
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