在10,537例怀孕中,病原性或可能病原性拷贝数变异的患病率和表型发现
Shiwei Ren1, Wenjing Gu2, Ting Liu2
1School of Clinical Medicine, Jining Medical University, Jining, Shandong, China.
PloS one
|October 28, 2025
概括
染色体微阵列分析 (CMA) 在检测高风险怀孕中致病拷贝数变异 (p/lpCNVs) 方面优于型分析. 这些变异与出生缺陷有关,在涉及辅助生殖技术 (ART) 和多水症的怀孕中发病率更高.
科学领域:
- 产前诊断 在产前诊断
- 遗传学 遗传学 是一个
- 生殖医学 生殖医学
背景情况:
- 致病性和可能致病性拷贝数变异 (p/lpCNVs) 是了解出生缺陷病因学的关键.
- 由于p/lpCNVs的宫内表型特征和基因型-表型相关性仍然不清楚,因为透率不完整和表达变化.
研究的目的:
- 探索p/lpCNVs在大量孕妇队列中的患病率和临床影响.
- 为了比较染色体微阵列分析 (CMA) 与在产前环境中的传统型分析的诊断疗效.
主要方法:
- 对10537例 (2013-2022) 涉及羊膜切割和CMA的产前诊断病例的回顾性分析.
- 将病例分类为CMA和型分析组,以评估CNV检测率.
- 使用奇平方和曼-惠特尼U测试 (p < 0.05) 来确定显著性的统计分析.
主要成果:
- 在7,663例羊膜切割CMA病例中,CMA确定了453个p/lpCNV,这表明检测能力优于型分析.
- 特定的染色体区域 (例如22q11.21,16p13.11) 与心血管异常和发育迟缓等表型有关.
- 病原性CNV的发病率较高在怀孕时观察到多水和那些通过辅助生殖技术 (ART) 怀孕的怀孕.
结论:
- 在高风险怀孕中,CMA比传统的型分析更有效地检测小CNV.
- 致病性CNV与结构异常和显著的表型后果密切相关.
- ART和多水可能与p/lpCNV发生有关,需要进一步研究基因型-表型相关性和长期影响.
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