Association of common and rare variants of SCN10A gene with sudden unexplained nocturnal death syndrome in Chinese Han population

详细信息    查看全文

• 作者：Liyong Zhang ; Feng Zhou ; Lei Huang ; Qiuping Wu&#8230
• 关键词：Sudden unexplained nocturnal death syndrome (SUNDS) ; Brugada syndrome ; SCN10A gene
• 刊名：International Journal of Legal Medicine
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：131
• 期：1
• 页码：53-60
• 全文大小：
• 刊物类别：Medicine
• 刊物主题：Forensic Medicine; Medical Law; Medicine/Public Health, general;
• 出版者：Springer Berlin Heidelberg
• ISSN：1437-1596
• 卷排序：131

文摘

Sudden unexplained nocturnal death syndrome (SUNDS) remains an autopsy negative entity with unknown etiology to both forensic pathologists and physicians. The electrocardiogram (ECG) characteristics and clinical phenotype of SUNDS survivors strongly suggest that SUNDS shares some similarities with Brugada syndrome (BrS). Recently, the variants of sodium channel Na_v 1.8 coding gene SCN10A were identified to be associated with BrS. Here, we investigated the association of SCN10A gene variants with 105 sporadic SUNDS victims and 22 BrS cases in the Chinese Han population. A total of 6 rare mutations and 16 polymorphisms were detected in SUNDS victims. Of the six rare mutations, two were putative pathogenic mutations (F386C and R1263*), one was a likely pathogenic mutation (R14H), and the other three were predicted as benign (R817Q, T1181M, and P1683S). As for the 16 polymorphisms, 1 was a novel polymorphism (c.4144-84G>A) located in intron 24, and the rest were reported previously including one polymorphism (c.2884A>G [I962V]) which showed a statistically significant difference in allele frequency (p = 0.044) between SUNDS and the control group. There were also 5 rare mutations and 15 polymorphisms detected in BrS cases. This is the first report of common and rare variants of SCN10A gene in SUNDS and BrS in the Chinese Han population, which provides the genetic epidemiological evidence that SCN10A may be a novel susceptibility gene for SUNDS and account for approximately 3 % of SUNDS in China.