改善了临床异质儿科队列的基因组特征,其中包括WGS与WES
Awtum M Brashear1, Anxhela G Gustafson1, Andrew Quitadamo1
1Shriners Children's Genomics Institute, 3802 Spectrum Blvd, Unit 150, Tampa, FL, 33612, USA.
Scientific reports
|October 29, 2025
概括
全基因组测序 (WGS) 对儿科肌肉骨疾病的诊断实用性比整个外基因组测序 (WES) 更大. WGS确定了更多的候选变异,并检测出了WES遗漏的特定遗传变异,改善了诊断产量.
科学领域:
- 遗传学 是一个遗传学.
- 基因组学就是基因组学.
- 儿科医学 儿科医学
背景情况:
- 儿童的肌肉骨疾病往往有未知的遗传原因.
- 整体外基因组测序 (WES) 是常用的,但可能不涵盖所有相关的基因组区域.
- 全基因组测序 (WGS) 提供了全面的DNA序列变异检测.
研究的目的:
- 为了比较WGS与WES在儿科肌肉骨疾病的诊断效用.
- 评估WGS在未诊断病例中识别致病变异的有效性.
主要方法:
- 一项多中心队列研究,涉及36名患有肌肉骨疾病的儿科患者.
- 使用WGS和WES对唾液样本的DNA分析.
- 使用Illumina DRAGEN和Emedgene平台进行数据分析和变体解释.
主要成果:
- 与WES (57.5) 相比,WGS发现了更高的候选变异中位数 (90.5).
- 在WGS中,发现了38种致病性/可能致病性变体,在61.1%的患者中确诊.
- 仅由WGS检测出12种致病变体 (31.6%),其中2种可能解决了各自的病例.
结论:
- 与WES相比,WGS在儿科肌肉骨疾病的诊断实用性更高.
- WGS对于检测非编码区域的副本数变异 (CNV) 和变异具有优势.
- WGS有望揭示这些疾病的遗传和表型异质性.
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