PRRT2 mutation in Japanese children with benign infantile epilepsy

Abstract Mutations in PRRT2 genes have been identified as a major cause of benign infantile epilepsy and/or paroxysmal kinesigenic dyskinesia. We explored mutations in PRRT2 in Japanese patients with BIE as well as its related conditions including convulsion with mild gastroenteritis and benign earl...

Full description

Saved in:
Bibliographic Details
Published in:Brain & development (Tokyo. 1979) 2013-08, Vol.35 (7), p.641-646
Main Authors: Okumura, Akihisa, Shimojima, Keiko, Kubota, Tetsuo, Abe, Shinpei, Yamashita, Shintaro, Imai, Katsumi, Okanishi, Tohru, Enoki, Hideo, Fukasawa, Tatsuya, Tanabe, Takuya, Dibbens, Leanne M, Shimizu, Toshiaki, Yamamoto, Toshiyuki
Format: Article
Language:English
Subjects:
Adolescent
Asian Continental Ancestry Group - genetics
Benign infantile epilepsy
Child
Child, Preschool
Chorea - genetics
DNA Mutational Analysis
Dystonia
Epilepsy, Benign Neonatal - genetics
Female
Humans
Japanese children
Male
Membrane Proteins - genetics
Mutation
Nerve Tissue Proteins - genetics
Neurology
Paroxysmal kinesigenic dyskinesia
Pedigree
Polymerase Chain Reaction
PRRT2
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Abstract Mutations in PRRT2 genes have been identified as a major cause of benign infantile epilepsy and/or paroxysmal kinesigenic dyskinesia. We explored mutations in PRRT2 in Japanese patients with BIE as well as its related conditions including convulsion with mild gastroenteritis and benign early infantile epilepsy. We explored PRRT2 mutations in Japanese children who had had unprovoked infantile seizures or convulsion with mild gastroenteritis. The probands included 16 children with benign infantile epilepsy, 6 children with convulsions with mild gastroenteritis, and 2 siblings with benign early infantile epilepsy. In addition, we recruited samples from family members when PRRT2 mutation was identified in the proband. Statistical analyses were performed to identify differences in probands with benign infantile epilepsy according to the presence or absence of PRRT2 mutation. Among a total of 24 probands, PRRT2 mutations was identified only in 6 probands with benign infantile epilepsy. A common insertion mutation, c.649_650insC, was found in 5 families and a novel missense mutation, c.981C>G (I327M), in one. The family history of paroxysmal kinesigenic dyskinesia was more common in probands with PRRT2 mutations than in those without mutations. Our study revealed that PRRT2 mutations are common in Japanese patients with benign infantile epilepsy, especially in patients with a family history of paroxysmal kinesigenic dyskinesia.
ISSN:0387-7604
1872-7131
DOI:10.1016/j.braindev.2012.09.015