Int J Pediatr Otorhinolaryngol:非综合征听力损失患者的常见耳聋基因变异分析

2019-05-09 AlexYang MedSci原创

之前的研究表明,根据种族群体和区域的不同,耳聋基因的变异频率和变异谱差异显著。中国温州非综合征听力损失的分子病因还没有系统的阐释。为了给该区域提供精确的遗传测试和咨询,最近,有研究人员调查了温州耳聋群体的NSHL分子病因。研究发现,GJB2在整个群体中的检出比例为22.92%(116/506),SLC26A4变异在群体中的均检出比为6.52%(33/506)。GJB3变异在群体中的检出比为0.79

之前的研究表明,根据种族群体和区域的不同,耳聋基因的变异频率和变异谱差异显著。中国温州非综合征听力损失的分子病因还没有系统的阐释。为了给该区域提供精确的遗传测试和咨询,最近,有研究人员调查了温州耳聋群体的NSHL分子病因。

研究发现,GJB2在整个群体中的检出比例为22.92%(116/506),SLC26A4变异在群体中的均检出比为6.52%(33/506)。GJB3变异在群体中的检出比为0.79%(4/506)。线粒体DNA 12SrRNA在患者群体中的检出比为17.40%(88/506),包括了17.00%(86/506)的m.1555A>G变异和0.40%(2/506)的m.1494C>T变异。c.235delC变异的等位频率为14.62%(148/1012),该值比 c.109G>A (33/1012,3.26%)、c.299_300delAT (13/1012,1.28%)和c.176_191del16 (6/1012,0.59%) 显著更高。另外,SLC26A4最常见的病理变异为c.919-2A>G(37/1012,3.66%),其后依次是c.2168A>G (6/1012,0.59%)和c.1229C>T (4/1012,0.40%)。更多的是,在该群体中还鉴定了5个稀有的GJB2病理变异和8个SLC26A4稀有病理变异。

最后,研究人员指出,GJB2是温州耳聋患者的主要致病基因,这与大多数中国人群体中观察到的一致,但是m.1555A>G变异在温州患者群体中的比例要比中国其他人群中显著更高。

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    2020-01-28 feather89
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    2019-05-11 ysjykql
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