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Identification of genetic variations of a Chinese family with paramyotonia congenita via whole exome sequencing.

ABSTRACT: Paramyotonia congenita (PC) is a rare autosomal dominant neuromuscular disorder characterized by juvenile onset and development of cold-induced myotonia after repeated activities. The disease is mostly caused by genetic mutations of the sodium channel, voltage-gated, type IV, alpha subunit (SCN4A) gene. This study intended to systematically identify the causative genetic variations of a Chinese Han PC family. Seven members of this PC family, including four patients and three healthy controls, were selected for whole exome sequencing (WES) using the Illumina HiSeq platform. Sequence variations were identified using the SoftGenetics program. The mutation R1448C of SCN4A was found to be the only causative mutation. This study applied WES technology to sequence multiple members of a large PC family and was the first to systematically confirm that the genetic change in SCN4A is the only causative variation in this PC family and the SCN4A mutation is sufficient to lead to PC.

SUBMITTER: Li J 

PROVIDER: S-EPMC4535863 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature

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Identification of genetic variations of a Chinese family with paramyotonia congenita via whole exome sequencing.

Li Jinxin J   Huang Qinghai Q   Ge Liang L   Xu Jing J   Shi Xingjuan X   Xie Wei W   Liu Xiang X   Liu Xiangdong X  

Genomics data 20150318

Paramyotonia congenita (PC) is a rare autosomal dominant neuromuscular disorder characterized by juvenile onset and development of cold-induced myotonia after repeated activities. The disease is mostly caused by genetic mutations of the sodium channel, voltage-gated, type IV, alpha subunit (SCN4A) gene. This study intended to systematically identify the causative genetic variations of a Chinese Han PC family. Seven members of this PC family, including four patients and three healthy controls, we  ...[more]

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