CACNA1C variants associated with focal epilepsy and their correlations with arrhythmias and developmental disorders.

IF 3.4 2区 医学 Q2 GENETICS & HEREDITY
Yan-Fang Li, Pei Mo, Lan-Zhen Zhang, Xin-Long Zhou, Wen-Yu Zhu, Jun-Hui Zhu, Shu-Hong Liao, Ya-Ting Chen, Weiwen Deng, Dong-Ming Zhang, Xiao-Rong Liu, Yong-Jun Chen, Wei-Ping Liao, Jie Wang, Chuan-Fang Cheng
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引用次数: 0
与局灶性癫痫相关的CACNA1C变异及其与心律失常和发育障碍的相关性
目的:CACNA1C变异已在心律失常和发育障碍(DD)中被发现。在这里,我们旨在探讨CACNA1C与癫痫之间的关系以及表型异质性的机制。方法:对局灶性癫痫患者进行三基全外显子组测序。选择具有反复识别变异的基因进行进一步研究。结果:在3例局灶性癫痫患者中发现3个新的CACNA1C变异。所有变异在基因组聚集数据库中均无次要等位基因频率,显著低于ClinVar数据库中良性变异的等位基因频率。根据最新的美国医学遗传学和基因组学学院(ACMG)分类,三个新生变异被评估为致病性或可能致病性变异。两名患者经历了罕见的癫痫发作,并成为无癫痫发作。另1例为难治性癫痫伴DD和心律失常。此前,138个CACNA1C变异被报道与心律失常相关,其中39个被归类为致病性或可能致病性;30个变异与DD相关,其中19个根据最新的ACMG分类被分类为致病或可能致病。进一步分析表明,null变异在DD中比在癫痫(p=1.39×10-3)和心律失常(p=6.31×10-7)中更常见。癫痫相关的变异主要位于电压传感器区(p=9.03×10-3),而心律失常相关的变异主要位于连接区(p=2.13×10-4)。癫痫和DD患者的新生变异比例高于心律失常患者(p=6.02×10-3; p=2.47×10-2)。结论:CACNA1C是局灶性癫痫的潜在致病基因。CACNA1C基因型-表型相关性有助于解释表型异质性。
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来源期刊
Journal of Medical Genetics
Journal of Medical Genetics 医学-遗传学
CiteScore
7.60
自引率
2.50%
发文量
92
审稿时长
4-8 weeks
期刊介绍: Journal of Medical Genetics is a leading international peer-reviewed journal covering original research in human genetics, including reviews of and opinion on the latest developments. Articles cover the molecular basis of human disease including germline cancer genetics, clinical manifestations of genetic disorders, applications of molecular genetics to medical practice and the systematic evaluation of such applications worldwide.
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