通过基于exome测序数据的短并列重复的分析,通过额外的诊断收益率
Shiyi Xu1, Xiaomei Luo1, Bing Xiao1
1Clinical Genetics Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China; Shanghai Institute for Pediatric Research, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
The Journal of molecular diagnostics : JMD
|July 25, 2025
概括
使用外体序列测序 (ES) 的短串重复 (STR) 分析可以诊断遗传疾病. 这项研究表明,基于ES的STR分析在临床上是有用的,应该纳入遗传测试工作流程.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 临床诊断 临床诊断 临床诊断
背景情况:
- 短串联重复 (STRs) 与70种遗传疾病有关.
- 目前的外体序列 (ES) 限制阻碍了常规的STR分析.
- 在临床ES数据中对致病性STR扩散诊断产量的系统评估是有限的.
研究的目的:
- 评估外基因组测序 (ES) 的诊断实用性,用于检测致病性短串重复 (STR) 扩张.
- 在大规模的临床ES数据中开发和验证STR检测的分析管道.
主要方法:
- 对9580个临床外体的回顾性分析 (2019年7月至2024年6月).
- 分层为未诊断 (n=4692) 和参考 (n=4888) 队列.
- 在30个与疾病有关的地点进行STR分析的多算法管道的开发.
主要成果:
- 开发的管道实现了54.9%的精度和100%的STR分析灵敏度.
- STR验证证实28例 (0.6%) 的病原性STR扩散.
- 14例 (0.3%) 病例是由STR发现解释的,其中7例新生儿具有DMPK扩展.
结论:
- 基于外体测序的STR分析显示出显著的临床实用性.
- 开发的管道可以识别致病性STR扩张,包括在新的位置.
- 建议将基于ES的STR分析纳入临床工作流程,以加强遗传诊断.
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