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Type: Journal article
Title: SCN1A mutations and epiliepsy
Author: Mulley, J.
Scheffer, I.
Petrou, S.
Dibbens, L.
Berkovic, S.
Harkin, L.
Citation: Human Mutation, 2005; 25(6):535-542
Publisher: Wiley-Liss
Issue Date: 2005
ISSN: 1059-7794
Statement of
John C. Mulley, Ingrid E. Scheffer, Steven Petrou, Leanne M. Dibbens, Samuel F. Berkovic, and Louise A. Harkin
Abstract: SCN1A is part of the SCN1A-SCN2A-SCN3A gene cluster on chromosome 2q24 that encodes for alpha pore forming subunits of sodium channels. The 26 exons of SCN1A are spread over 100 kb of genomic DNA. Genetic defects in the coding sequence lead to generalized epilepsy with febrile seizures plus (GEFS+) and a range of childhood epileptic encephalopathies of varied severity (e.g., SMEI). All published mutations are collated. More than 100 novel mutations are spread throughout the gene with the more debilitating usually de novo. Some clustering of mutations is observed in the C-terminus and the loops between segments 5 and 6 of the first three domains of the protein. Functional studies so far show no consistent relationship between changes to channel properties and clinical phenotype. Of all the known epilepsy genes SCN1A is currently the most clinically relevant, with the largest number of epilepsy related mutations so far characterized.
Keywords: Humans; Epilepsy; Sodium Channels; Nerve Tissue Proteins; Alternative Splicing; Mutation; Molecular Sequence Data; NAV1.1 Voltage-Gated Sodium Channel
Description: Copyright © 2005 Wiley-Liss, Inc.
Provenance: Published Online: 6 May 2005
RMID: 0020050467
DOI: 10.1002/humu.20178
Appears in Collections:Molecular and Biomedical Science publications

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