罕见的CACNA1H基因杂合变异患者的癫痫和听力损失。

Journal of epilepsy research Pub Date : 2022-06-30 eCollection Date: 2022-06-01 DOI:10.14581/jer.22006
Hussein A Algahtani, Bader H Shirah, Ahmed Samman, Abdulellah Alhazmi
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引用次数: 1

摘要

钙电压门控通道亚单位α 1h (CACNA1H)是真核细胞中一个位于16号染色体上的基因,它编码t型钙通道,这对钙内流和细胞去极化很重要。CACNA1H的致病变异导致特发性全面性癫痫的常染色体显性易感性6 (OMIM: 611942),这是一个广泛的术语,包括几种常见的癫痫发作表型。在这篇文章中,我们报道了一名患有癫痫和听力损失的沙特女性CACNA1H基因杂合变异(OMIM: 607904)。这是首次报道癫痫和听力损失与CACNA1H变异相关的病例。我们认为这种变异可能是癫痫和感音神经性听力损失的原因。需要进一步的研究来确定CACNA1H在耳朵生理中的作用,以便更好地理解突变的影响。在患有早期儿童听力损失的儿童中,对高选择性病例(包括具有强烈的听力损失和癫痫家族史的病例)进行遗传研究可能有助于早期发现CACNA1H变异,并有助于早期筛查和诊断其他相关疾病,包括亚临床癫痫。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Epilepsy and Hearing Loss in a Patient with a Rare Heterozygous Variant in the <i>CACNA1H</i> Gene.

Epilepsy and Hearing Loss in a Patient with a Rare Heterozygous Variant in the CACNA1H Gene.

The calcium voltage-gated channel subunit alpha 1 H (CACNA1H) is a gene present in eukaryotic cells located on chromosome 16 that encodes the T-type calcium channels, which are important for calcium influx and depolarization of cells. Pathogenic variants in CACNA1H cause autosomal dominant susceptibility to idiopathic generalized epilepsy 6 (OMIM: 611942), which is a broad term that encompasses several common seizure phenotypes. In this article, we reported a Saudi female with a heterozygous variant in the CACNA1H gene (OMIM: 607904) who had epilepsy and hearing loss. This is the first case to report the association of epilepsy and hearing loss with a variant in CACNA1H. We believe that variant may be the reason for developing both epilepsy and sensorineural hearing loss. Further studies are needed to identify the role of CACNA1H in the physiology of the ear to allow for a better understanding of the effects of mutations. In children who present with early childhood hearing loss, genetic studies in highly selected cases including those with a strong family history of hearing loss and epilepsy may help detect a CACNA1H variant early and help with the early screening and diagnosis of other associated disorders including subclinical epilepsy.

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