一个患有inv (x) (p22.2q13.1) 的患者的前鼻综合征,将EFNB1与其增强剂分开
Purvi M Kakadia1, Barbara Fritz2, Stefan K Bohlander3
1Leukaemia & Blood Cancer Research Unit, Department of Molecular Medicine and Pathology, Faculty of Medical and Health Sciences, The University of Auckland, Auckland, 1023, New Zealand. p.kakadiya@auckland.ac.nz.
European journal of human genetics : EJHG
|December 6, 2024
概括
女性的前鼻综合征 (CFNS) 通常是由EFNB1基因变异引起的. 这项研究发现了一种新的X染色体逆转扰乱EFNB1增强剂,导致女性患者的CFNS.
科学领域:
- 遗传学 是一个遗传学.
- 发展生物学 发展生物学
- 人类疾病 人类疾病
背景情况:
- 前鼻综合征 (CFNS) 是一种X关联疾病,由EFNB1基因中的功能丧失变异引起.
- 通常情况下,异卵性雌性表现出严重的表型,而半卵性雄性表现出较轻微的症状.
研究的目的:
- 在患有严重表型的女性患者中调查CFNS的遗传原因.
- 在标准突变测试呈阴性结果的情况下,识别潜在的遗传机制.
主要方法:
- 全基因组测序 (WGS) 用于识别结构变异.
- 染色体分析以检测染色体异常.
- 对基因组失衡进行分子测试和SNP-array.
主要成果:
- 在该患者身上发现了一种新的围心X染色体逆转,inv(X) ((p22q13).
- WGS揭示了将潜在的EFNB1增强器区域与EFNB1基因分离的断点.
- 对于EFNB1突变和基因组失衡的标准突变分析和SNP-array测试是负的.
结论:
- 这是首次报告的CFNS病例,由影响EFNB1监管区域的大型结构变异引起.
- X染色体逆转破坏了EFNB1基因的基因组和调控环境,导致CFNS.
- 这一发现扩大了已知的导致CFNS的遗传改变谱.
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