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Identification of genes and mutations in 10 Iranian families with NARHL by whole exome sequencing

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Year: 2014
COI code: CIGS13_0628
Paper Language: English

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Authors Identification of genes and mutations in 10 Iranian families with NARHL by whole exome sequencing

  Mojgan Babanejad - Genetic Research Cen ter, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
Mohammad Reza Akbari - Women’s College Research Institute, Women's College Hospital, University of Toronto, Toronto, Canada.
  Hossein Najmabadi - Genetic Research Cen ter, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
  Kimia Kahrizi - Genetic Research Cen ter, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran

Abstract:

With prevalence figures close to 0.2% at birth, hearing loss (HL) is the most frequent sensory impairment in childhood. In developed countries, genetic causes account for more than 60% of congenital HL, most often resulting in non-syndromicdeafness, which is usually autosomal recessive.Hereditary nonsyndromic hearing loss (NSHL) in Iran is highly heterogeneous, and more than 50% of patients with a presumed genetic etiology lack a specific molecular diagnosis with STR analysis. Whole-exome sequencing (WES) has recently opened a new page in Mendelian disease gene discovery – enabling to study autosomal recessive HL in a new way.The aim of this study is to find more causative genes and their mutations for NSARHL in Iranian families by WES. Afterruling out any association to prevalent genes for NSARHL in Iran, ten families will be subjected to WES.Until now, WES has been performed with genomic DNA from affected individuals of two consanguineous families with profound deafness. Analysis of these data revealed a novel homozygous mutation in MYO7A gene in one family but cosegregation study failed to confirm this variant as the only cause of HL in this family. Additional clinical investigation revealed that an intra-familial phenotypic variation and existence of both syndromic and non-syndromic HL in this family ispossible. Further studies to find the other variants which may be associated with HL in this family, the data analysis of the second family and also WES of remaining families are underway

Keywords:

Non-syndromic autosomal recessive hearing loss, whole-exome sequencing, Iran

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COI code: CIGS13_0628

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Babanejad, Mojgan; Mohammad Reza Akbari; Hossein Najmabadi & Kimia Kahrizi, 2014, Identification of genes and mutations in 10 Iranian families with NARHL by whole exome sequencing, 12th Congress of Iranian Genetics Society, تهران, انجمن ژنتيك ايران, https://www.civilica.com/Paper-CIGS13-CIGS13_0628.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Babanejad, Mojgan; Mohammad Reza Akbari; Hossein Najmabadi & Kimia Kahrizi, 2014)
Second and more: (Babanejad; Akbari; Najmabadi & Kahrizi, 2014)
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Type: state university
Paper No.: 860
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