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综合性染色体异常检测:在产前诊断中将CNV-Seq与传统的肌型定型相结合

Yan Huang¹, Shuai Fu², Di Shao³

¹Department of Obstetrics, Sanming First Hospital, Sanming, 365000, China.

BMC medical genomics

|April 29, 2025

概括

副本数变异测序 (CNV-Seq) 通过检测更多的染色体异常而显著改善产前诊断. 这种先进的方法可以识别亚微观变异,增强基因查,以获得更好的妊娠结果.

科学领域:

遗传学是一个遗传学.
基因组医学是基因组医学.
产前诊断在产前诊断

背景情况:

传统的型定型是用于在产前诊断中检测染色体异常的标准方法.
对于检测亚微镜副本数变异 (CNVs) 的kariyotyping存在限制.
拷贝数变异测序 (CNV-Seq) 提供了一个潜在的更敏感的方法.

研究的目的:

评估CNV-Seq在产前诊断中的有效性.
为了比较CNV-Seq与传统型分析的性能.
使用这两种方法来评估染色体异常的检测率.

主要方法:

1001个产前样本的回顾性分析.
使用CNV-Seq和型分析进行的分析.
检测率和临床随访对妊娠结果的比较.

主要成果:

通过CNV-Seq检测到8.9%的异常,与5.0%相比.
CNV-Seq确定了所有被型检测到的异常,再加上53个额外的致病性微观CNVs.
在高风险组 (HR-NIPT,HR-MSS) 中观察到CNV-Seq的更高检测率.

结论:

在产前诊断中,CNV-Seq显示出在检测染色体异常,特别是微观异常方面具有卓越的灵敏度.
CNV-Seq是改进遗传异常检测和指导临床决策的宝贵工具.
对于综合性产前查,建议采用CNV-Seq和胆型测试的综合方法.

关键词:

在CNV-Seqq中使用.染色体异常是一种染色体异常.型化 (Karyotyping) 是一种方法.产前诊断在产前诊断

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Karyotyping

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Comparing Copy Number Variations and SNPs

Comparing Copy Number Variations and SNPs

Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...