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评估型分析和染色体微阵列在产前诊断中的应用

Huafeng Li¹, Yongli Li¹, Yanli Zhang¹

¹Medical Genetics Department, Linyi Women and Children's Health Care Hospital, Linyi 276000, China.

Iranian journal of public health

|October 24, 2024

概括

在产前诊断中,染色体微阵列 (CMA) 检测到的遗传异常比 karyotype 分析更多,特别是在超声波异常. 遗传咨询师应向患者介绍这两种方法的特点.

科学领域:

遗传学是一个遗传学.
产前诊断在产前诊断
医学诊断医学诊断医学诊断

背景情况:

染色体异常是出生缺陷的重要原因之一.
型分析和染色体微阵列 (CMA) 是产前诊断的关键工具.
对比这些方法对于优化产前遗传检测至关重要.

研究的目的:

为了比较型分析和染色体异常的CMA的诊断产量.
评估在不同产前诊断指示中CMA和卡里奥类型的应用.
评估CMA检测到的变异的临床意义.

主要方法:

同时对3007名孕妇进行G带型分析和CMA.
录取具有遗传变异的胎儿进行进一步分析.
在不同指示组的方法之间比较异常检测率.

主要成果:

CMA发现的基因变化比型分析多了4.09%.
在CMA和型鉴定中,对动脉增生病和严重不平衡重排的检测率相似.
在非侵入性产前检测 (NIPT) 异常组中观察到染色体异常的检测率最高.
在超声波异常组中,CMA检测到5.57%更多的遗传异常,包括致病复制数变异 (pCNVs).
CMA确定了额外的临床显著变异和不确定的意义 (VOUS) 的变异.

结论:

CMA增强了超出正常型分析的临床显著遗传变异的检测.
CMA还确定了不确定的意义的变体,需要仔细解释.
关于型分析和CMA的特征的知情同意对于接受乳房产卵检查的孕妇至关重要.

关键词:

染色体微阵列分析分析基因变异是一种基因变异.型分析分析型分析产前诊断在产前诊断.

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