全外显子组测序(WES)和全基因组测序(WGS)等高通量测序技术极大地提高了遗传病的诊断率,但在解释意义不明变异(VUS)、非编码区变异以及这些变异对下游基因的影响方面仍存在巨大的挑战,其诊断率通常在25% ~ 57%。转录组测序(RNA-seq)可以作为DNA测序的补充检测,通过检测基因的异常表达、异常剪接、等位基因特异性表达和融合基因表达等揭示遗传变异的功能影响,进一步提高遗传病的诊断率并为其拓宽了诊断策略,有望成为新的诊断工具。本文总结了RNA-seq的方法及技术特点,重点探讨了其在遗传病诊断方面的应用进展、未诊断遗传病中的应用策略、以及在遗传病诊断过程中所面临的主要挑战。
Next generation sequencing (NGS) technologies, including whole exome sequencing (WES) and whole genome sequencing (WGS), have greatly increased the diagnostic rates for genetic disorders. However, challenges still remain with the interpretation of variants of uncertain significance (VUS), variants in non-coding regions, and understanding of the effects of such variants on downstream genes. As a result, the diagnostic rates have typically ranged from 25% to 57%. RNA sequencing (RNA-seq) can complement DNA sequencing by revealing the functional consequences of genetic variants through the detection of aberrant gene expression, abnormal splicing events, allele-specific expression, and fusion gene expression. This has further increased the diagnostic rate of genetic disorders and enriched their therapeutic strategies. By broadening the scope of conventional genomic diagnostic methods, RNA-seq is poised to become a novel tool for the diagnosis of genetic disorders. This review has explored the methodologies and technical characteristics of RNA-seq by focusing on its recent advancement in clinical diagnosis, applications in undiagnosed genetic disorders, and the main challenges encountered.
安君,郭可欣,胡平. 转录组测序技术在遗传病诊断中的应用[J]. 中华医学遗传学杂志,2025,42(02):238-243.
DOI:10.3760/cma.j.cn511374-20240821-00452版权归中华医学会所有。
未经授权,不得转载、摘编本刊文章,不得使用本刊的版式设计。
除非特别声明,本刊刊出的所有文章不代表中华医学会和本刊编委会的观点。

你好,我可以帮助您更好的了解本文,请向我提问您关注的问题。