在临床诊断中提高成本效益,使用扩展的全外因子测序:SNVs,SVs,以及其他方面
Fuyuki Miya1, Daisuke Nakato2, Hisato Suzuki2,3
1Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan. fmiya@keio.jp.
Journal of human genetics
|September 8, 2025
概括
这项研究通过将目标区域扩展到蛋白质编码区域之外来增强全外体序列 (WES). 这种具有成本效益的方法可以提高遗传疾病的诊断产量,减少对全基因组测序 (WGS) 的需求.
科学领域:
- 基因组学就是基因组学.
- 临床诊断 临床诊断 临床诊断
背景情况:
- 标准的全外体序列测序 (WES) 主要针对蛋白质编码区域 (CDS),通常在深层内基,未翻译,重复或线粒体DNA区域中缺少致病变体.
- 在CDS之外检测变异通常需要全基因组测序 (WGS),增加成本和复杂性.
研究的目的:
- 开发和验证一个具有成本效益的WES战略,扩大目标地区,以提高遗传疾病的诊断产量.
- 为了证明使用增强的WES方法检测非CDS致病变异的可行性,可能避免需要WGS.
主要方法:
- 设计了一种扩展的WES捕获策略,针对特定基因组的内基和未翻译区域 (UTR),与疾病相关的重复区域以及整个线粒体基因组.
- 通过实验验证了这些扩展区域的覆盖范围,并通过案例示例证明了变种检测能力.
主要成果:
- 增强的WES方法成功覆盖了扩展的目标区域,包括临床相关基因的内基和UTR以及与疾病相关的重复区域.
- 案例研究证实了使用这种方法成功检测出CDS之外的先前未被诊断的致病变体.
- 实现了与传统WES可比的成本,同时显著增加了潜在的诊断产量.
结论:
- 扩大WES目标地区提供了一种具有成本效益的方法,可以大幅增加遗传疾病的诊断产量.
- 这种增强的WES策略可以通过检测标准WES遗漏的变异来缩短患者的诊断旅程,而不需要WGS.
- 拟议的方法代表了临床基因组学在改善患者诊断方面取得的宝贵进展.
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