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Association of a synonymous SCN1B variant affecting splicing efficiency with Benign Familial Infantile Epilepsy (BFIE)

Usluer, Sunay; Kayserili, Melek Asli; Eken, Asli Gundogdu; Yis, Uluc; Leu, Costin; Altmueller, Janine; Thiele, Holger; Nuernberg, Peter; Sander, Thomas; Caglayan, S. Hande


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    "creators": [
      {
        "affiliation": "Bogazici Univ, Dept Mol Biol & Genet, Istanbul, Turkey", 
        "name": "Usluer, Sunay"
      }, 
      {
        "name": "Kayserili, Melek Asli"
      }, 
      {
        "affiliation": "Bogazici Univ, Dept Mol Biol & Genet, Istanbul, Turkey", 
        "name": "Eken, Asli Gundogdu"
      }, 
      {
        "affiliation": "Dokuz Eylul Univ, Sch Med, Div Child Neurol, Dept Pediat, Izmir, Turkey", 
        "name": "Yis, Uluc"
      }, 
      {
        "name": "Leu, Costin"
      }, 
      {
        "affiliation": "Univ Cologne, Cologne Ctr Genom, Cologne, Germany", 
        "name": "Altmueller, Janine"
      }, 
      {
        "affiliation": "Univ Cologne, Cologne Ctr Genom, Cologne, Germany", 
        "name": "Thiele, Holger"
      }, 
      {
        "affiliation": "Univ Cologne, Cologne Ctr Genom, Cologne, Germany", 
        "name": "Nuernberg, Peter"
      }, 
      {
        "affiliation": "Univ Cologne, Cologne Ctr Genom, Cologne, Germany", 
        "name": "Sander, Thomas"
      }, 
      {
        "affiliation": "Bogazici Univ, Dept Mol Biol & Genet, Istanbul, Turkey", 
        "name": "Caglayan, S. Hande"
      }
    ], 
    "description": "Benign Familial Infantile Epilepsy (BFIE) is clinically characterized by clusters of brief partial seizures progressing to secondarily generalized seizures with onset at the age of 3-7 months and with favorable outcome. PRRT2 mutations are the most common cause of BFIE, and found in about 80% of BFIE families. In this study, we analyzed a large multiplex BFIE family by linkage and whole exome sequencing (WES) analyses. Genome-wide linkage analysis revealed significant evidence for linkage in the chromosomal region 19p12-q13 (LOD score 3.48). Mutation screening of positional candidate genes identified a synonymous SCN1B variant (c.492T>C, p.Tyr164Tyr) affecting splicing by the removal of a splicing silencer sequence, shown by in silico analysis, as the most likely causative mutation. In addition, the PRRT2 frameshift mutation (c.649dupC/p.Arg217Profs*8) was observed, showing incomplete, but high segregation with the phenotype. In vitro splicing assay of SCN1B expression confirmed the in silico findings showing a splicing imbalance between wild type and mutant exons. Herein, the involvement of the SCN1B gene in the etiology of BFIE, contributing to the disease phenotype as a modifier or part of an oligogenic predisposition, is shown for the first time. (C) 2017 European Paediatric Neurology Society. Published by Elsevier Ltd. All rights reserved.", 
    "doi": "10.1016/j.ejpn.2017.05.001", 
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    "journal": {
      "issue": "5", 
      "pages": "773-782", 
      "title": "EUROPEAN JOURNAL OF PAEDIATRIC NEUROLOGY", 
      "volume": "21"
    }, 
    "license": {
      "id": "cc-by"
    }, 
    "publication_date": "2017-01-01", 
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    "title": "Association of a synonymous SCN1B variant affecting splicing efficiency with Benign Familial Infantile Epilepsy (BFIE)"
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