在ERCC6基因中的一个切断变异具有三个不同的表型:修饰基因的显著影响
Mehdi Khorrami1, Erfan Khorram2,3, Mohammad Amin Tabatabaiefar1
1Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran, mui.ac.ir.
Genetics research
|December 29, 2025
概括
这项研究确定了与ERCC6基因变异相关的可凯恩综合征 (CS) 和脑面骨综合征 (COFS) 的新型中间表现. 研究结果表明,CS和COFS是连续的表型谱的一部分.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 罕见疾病 罕见疾病
背景情况:
- 卡凯恩综合征 (CS) 是一种罕见的,自体衰退性疾病,影响多个系统,包括神经和发育方面的方面.
- CS是由ERCC6或ERCC8基因的变异引起的,这对DNA修复至关重要.
- 脊髓灰质炎被分为I型,II型,III型和脑面骨综合征 (COFS),有争议的是,COFS是不同的还是严重的脊髓灰质炎形式.
研究的目的:
- 为了调查一个患者的遗传基础,该患者的症状介于CS和COFS之间的中间症状.
- 分析特定ERCC6基因变异的临床意义.
主要方法:
- 整体外体测序 (WES) 用于识别潜在的致病变体.
- 桑格测序用于同分离分析,以确认已识别的变种.
主要成果:
- 在ERCC6基因中,通过WES识别了一种无意义变异 (NM_000124:c.3862C>T,p.R1288X),并通过桑格测序得到证实.
- 患者表现出典型的CS和COFS之间的中间症状.
- 这种特定的变异以前与CS和COFS单独相关.
结论:
- 这些发现扩大了ERCC6变体 (NM_000124:c.3862C>T,p.R1288X) 已知的临床谱.
- 这项研究支持了CS和COFS作为一种表型谱的观点,受遗传和表观遗传因素的影响.
- 在CS/COFS症状的严重程度可能由遗传和表观遗传因素调节.
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