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在台湾患者中GJB2的突变谱与神经感官听力损失:患病率,致病性和临床影响
Yi-Feng Lin1,2, Che-Hong Chen3, Chang-Yin Lee4,5,6
1Institute of Biomedical Sciences, Mackay Medical University, New Taipei City 252005, Taiwan.
GJB2基因的基因突变是遗传性听力损失的主要原因. 查GJB2变种,特别是GJB2 p.I203T,对于管理台湾的非综合征感应神经听力损失至关重要.
科学领域:
- 遗传学 遗传学是一种遗传学.
- 听力学 听力学是指听力学.
- 分子生物学分子生物学
背景情况:
- 遗传突变导致50-60%的听力损失病例.
- GJB2基因 (连xin26) 对听觉功能至关重要,也是非综合征性神经神经听力损失 (NSHL) 的主要原因.
- 在台湾,常见的与聋相关的基因包括GJB2,SLC26A4,OTOF,MYO15A和MTRNR1.
研究的目的:
- 用台湾生物库数据分析台湾人口中GJB2基因变异频率.
- 使用生物信息学工具评估GJB2突变的致病性.
- 调查GJB2突变与NSHL患者听力损失严重程度之间的相关性.
主要方法:
- 来自台湾生物库数据的GJB2基因变异的等位基因频率分析.
- 使用预测软件 (PolyPhen-2,SIFT,MutationTaster,Alphamissense) 来评估突变的致病性.
- 使用PCR和DNA测序对82名NSHL患者进行突变查.
主要成果:
- 发现了常见的GJB2变种:p.V37I (7.7%),p.I203T (6%),p.V27I (31%) 和p.E114G (22%).
- GJB2 p.I203T被归类为致病性,而p.V27I和p.E114G被认为是多态.
- 患有GJB2 p.I203T突变的患者表现出更严重的听力损失,这表明有协同效应.
结论:
- 在台湾,GJB2突变是遗传性听力损失的主要遗传原因,其模式与东亚类似.
- GJB2 p.I203T突变与更严重的听力损失有关,突出其临床意义.
- 推全GJB2基因测序用于台湾NSHL的临床管理和预防策略.
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