产前诊断的7q11.23副本数变异:一个回顾性的案例系列
Jiong Yan1, Ziyang Liu2, Song Yi3
1Department of Administration Office, Maternal and Child Health Hospital of Hubei Province, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.
Molecular genetics & genomic medicine
|January 6, 2026
概括
威廉姆斯-比伦综合征 (WBS) 的产前诊断涉及复制数变异 (CNVs),显示出各种超声波异常. 基因检测和遗传分析对于准确的WBS诊断和咨询至关重要.
科学领域:
- 遗传学 遗传学 是一个
- 产前诊断 在产前诊断
- 人类疾病 人类疾病
背景情况:
- 威廉姆斯 - 伯伦综合征 (WBS) 是由7q11.23删除引起的,产前表现不明确.
- 这项研究的重点是了解产前表型,遗传和7q11.23复制数变异 (CNV) 的结果.
研究的目的:
- 确定与7q11.23 CNVs相关的产前表型.
- 分析7q11.23 CNVs的遗传模式和妊娠结果.
主要方法:
- 对20例产前病例的回顾性分析,7q11.23 CNVs.
- 通过SNP阵列或CNV测序 (CNV-seq) 确认诊断.
- 评估超声波发现,遗传结果和怀孕结果.
主要成果:
- 100%的删除显示了超声波异常 (心血管缺陷,生长限制).
- 50%的重复呈现出异常 (口腔裂,心室隆骨病).
- 对于新发性CNVs,妊娠终止率高 (76.5%);有4名活产儿患有遗传性CNVs.
结论:
- 7q11.23 CNV显示出显著的产前表型变异性和遗传异质性.
- 先进的基因组测试对于准确的产前诊断至关重要.
- 遗传模式分析有助于为WBS提供遗传咨询.
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