基因组与整个外体对胎儿异常的测序
Kate Swanson1,2,3, Matthew A Shear1,2, Teresa N Sparks1,4,5
1Department of Obstetrics, Gynecology, and Reproductive Sciences, Division of Maternal-Fetal Medicine, University of California, San Francisco, California, USA.
Prenatal diagnosis
|March 13, 2026
概括
外体测序 (ES) 在18%的胎儿异常中发现了致病变体. 商业上可用的基因面板检测到88%的这些变异,但对多系统异常的表现不佳.
科学领域:
- 医学遗传学 医学遗传学
- 胎儿医学 胎儿医学
- 基因组医学是基因组医学.
背景情况:
- 外体测序 (ES) 和基因面板是胎儿异常的诊断工具.
- 对于ES与向基因组的比较优势仍然不清楚.
研究的目的:
- 为了评估外体序列测序 (ES) 对胎儿异常的诊断产量.
- 为了比较ES检测病原体变异的检测率与可用的产前基因组.
主要方法:
- 一项前性队列研究的二次分析,涉及有胎儿异常的怀孕.
- 包括患有骨功能障碍,中枢神经系统异常和/或心脏异常的病例.
- 通过ES识别的致病性 (P) 和可能致病性 (LP) 变异被产前基因小组评估以检测.
主要成果:
- 在109例中,有20例 (18%) 患有由ES识别的P/LP变体.
- 基因组将检测到ES发现的88%的变异.
- 单独的骨异常的检测收益率最高 (100%),多系统异常的检测收益率最低 (50%).
结论:
- 商业基因组显示出胎儿异常的可变诊断实用性.
- 与孤立的异常相比,基因面板在诊断多系统异常方面效率较低.
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