在临床实践中应用国家全基因组测序发现用于罕见疾病:多学科方法的必要性
Kyung Sun Park1, Sunghwan Shin2, Jong-Ho Park3
1Department of Laboratory Medicine, Kyung Hee University Medical Center, Kyung Hee University College of Medicine, Seoul, Republic of Korea.
Annals of laboratory medicine
|September 17, 2025
概括
从一项罕见疾病试点研究中重新分析全基因组测序 (WGS) 数据,显著提高了诊断率. 这凸显了医院层面分析和家庭数据对于有效的罕见病诊断的重要性.
科学领域:
- 基因组学就是基因组学.
- 罕见疾病 罕见疾病
- 临床遗传学 临床遗传学
背景情况:
- 全国范围的全基因组测序 (WGS) 计划正在扩大.
- 将大型WGS结果纳入罕见疾病的临床实践是必不可少的.
- 韩国第一个罕见疾病WGS试点研究提供了初步数据.
研究的目的:
- 评估来自国家项目的初始WGS分析的临床应用.
- 在三星医疗中心 (SMC) 全面重新分析WGS数据,以提高诊断产量.
- 确定有助于改善罕见疾病遗传诊断的因素.
主要方法:
- 从2020年8月到2021年12月,对5000名个人 (2,200名受试者,2800名家庭成员) 进行前性队列研究.
- 最初的WGS数据和682名试验者和484名家庭成员的诊断报告被SMC重新分析.
- 进行了多轮数据再分析,包括扩展的家庭数据和精细的临床信息.
主要成果:
- 首次韩国WGS试点研究的初步分析显示,诊断率为17%.
- SMC的再分析使诊断率从15%提高到18% (第一次再分析),然后增加到24% (第三次分析) (P =1.6×10^-5).
- 改善的诊断与检测新型致病变体 (P =1.0×10^-4),更大的家庭招募 (P =0.004) 和增强的基因型-表型相关性 (40%) 有关.
结论:
- 国家WGS项目是罕见疾病诊断的基础.
- 对WGS数据的医院级再分析对于优化诊断结果至关重要.
- 多学科的合作提高了WGS在临床环境中的有效性.
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