在韩国人群中鉴定出染色体微阵列的同卵性区域:分布,频率和临床解释
Jaeryuk Kim1, Sunghee Min2, Chang Ahn Seol3,4
1Department of Laboratory Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Annals of laboratory medicine
|July 17, 2025
概括
这项研究描述了韩国人的同卵性区域 (ROH),为解释遗传变异提供了关键数据,并通过染色体微阵列分析 (CMA) 识别了诸如单亲异构 (UPD) 等条件.
科学领域:
- 遗传学 是一个遗传学.
- 基因组医学是基因组医学.
背景情况:
- 基于单核酸多态的染色体微阵列分析 (CMA) 检测出同胞性区域 (ROH),这可能具有医学意义.
- 东亚人群中ROHs的有限数据阻碍了准确的临床解释.
- 这项研究的重点是描述韩国人口中的ROH分布和频率.
研究的目的:
- 在使用CMA的韩国人口中描述ROH分布和频率.
- 确定临床相关的发现,包括怀疑单亲异构 (UPD).
- 在临床环境中建立可靠ROH分析的标准标准.
主要方法:
- 在1,731名接受产后CMA的个体中分析ROHs.
- 使用CytoScan Dx平台和染色体分析套件Dx检测≥3Mb的ROH.
- 根据既定技术标准评估可疑的UPD和血缘关系.
主要成果:
- 确定了3,962个ROH; 76.7%的患者至少有一个ROH.
- 确定了共同的ROH"热点"区域,大多数ROH<5 Mb.
- 1.2%的患者表现出暗示UPD或血缘关系的ROH模式,其中8人被诊断患有印记障碍.
结论:
- 针对韩国人的人口特定的ROH数据增强了对CMA结果的临床解释.
- 标准化标准可以更好地检测UPD和血缘关系.
- 将ROH分析整合到常规CMA中,对于诊断遗传疾病有价值.
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