Genetics of Nonsyndromic Congenital Hearing Loss

Congenital hearing impairment affects nearly 1 in every 1000 live births and is the most frequent birth defect in developed societies. Hereditary types of hearing loss account for more than 50% of all congenital sensorineural hearing loss cases and are caused by genetic mutations. HL can be either n...

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Main Authors: Oguz Kadir Egilmez, M. Tayyar Kalcioglu
Format: Article
Language:English
Published: Wiley 2016-01-01
Series:Scientifica
Online Access:http://dx.doi.org/10.1155/2016/7576064
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author Oguz Kadir Egilmez
M. Tayyar Kalcioglu
author_facet Oguz Kadir Egilmez
M. Tayyar Kalcioglu
author_sort Oguz Kadir Egilmez
collection DOAJ
description Congenital hearing impairment affects nearly 1 in every 1000 live births and is the most frequent birth defect in developed societies. Hereditary types of hearing loss account for more than 50% of all congenital sensorineural hearing loss cases and are caused by genetic mutations. HL can be either nonsyndromic, which is restricted to the inner ear, or syndromic, a part of multiple anomalies affecting the body. Nonsyndromic HL can be categorised by mode of inheritance, such as autosomal dominant (called DFNA), autosomal recessive (DFNB), mitochondrial, and X-linked (DFN). To date, 125 deafness loci have been reported in the literature: 58 DFNA loci, 63 DFNB loci, and 4 X-linked loci. Mutations in genes that control the adhesion of hair cells, intracellular transport, neurotransmitter release, ionic hemeostasis, and cytoskeleton of hair cells can lead to malfunctions of the cochlea and inner ear. In recent years, with the increase in studies about genes involved in congenital hearing loss, genetic counselling and treatment options have emerged and increased in availability. This paper presents an overview of the currently known genes associated with nonsyndromic congenital hearing loss and mutations in the inner ear.
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spelling doaj-art-7dd96b29d3ad4a73b79456a584f954072025-02-03T01:03:04ZengWileyScientifica2090-908X2016-01-01201610.1155/2016/75760647576064Genetics of Nonsyndromic Congenital Hearing LossOguz Kadir Egilmez0M. Tayyar Kalcioglu1Department of Otorhinolaryngology, Faculty of Medicine, Istanbul Medeniyet University, 34722 Istanbul, TurkeyDepartment of Otorhinolaryngology, Faculty of Medicine, Istanbul Medeniyet University, 34722 Istanbul, TurkeyCongenital hearing impairment affects nearly 1 in every 1000 live births and is the most frequent birth defect in developed societies. Hereditary types of hearing loss account for more than 50% of all congenital sensorineural hearing loss cases and are caused by genetic mutations. HL can be either nonsyndromic, which is restricted to the inner ear, or syndromic, a part of multiple anomalies affecting the body. Nonsyndromic HL can be categorised by mode of inheritance, such as autosomal dominant (called DFNA), autosomal recessive (DFNB), mitochondrial, and X-linked (DFN). To date, 125 deafness loci have been reported in the literature: 58 DFNA loci, 63 DFNB loci, and 4 X-linked loci. Mutations in genes that control the adhesion of hair cells, intracellular transport, neurotransmitter release, ionic hemeostasis, and cytoskeleton of hair cells can lead to malfunctions of the cochlea and inner ear. In recent years, with the increase in studies about genes involved in congenital hearing loss, genetic counselling and treatment options have emerged and increased in availability. This paper presents an overview of the currently known genes associated with nonsyndromic congenital hearing loss and mutations in the inner ear.http://dx.doi.org/10.1155/2016/7576064
spellingShingle Oguz Kadir Egilmez
M. Tayyar Kalcioglu
Genetics of Nonsyndromic Congenital Hearing Loss
Scientifica
title Genetics of Nonsyndromic Congenital Hearing Loss
title_full Genetics of Nonsyndromic Congenital Hearing Loss
title_fullStr Genetics of Nonsyndromic Congenital Hearing Loss
title_full_unstemmed Genetics of Nonsyndromic Congenital Hearing Loss
title_short Genetics of Nonsyndromic Congenital Hearing Loss
title_sort genetics of nonsyndromic congenital hearing loss
url http://dx.doi.org/10.1155/2016/7576064
work_keys_str_mv AT oguzkadiregilmez geneticsofnonsyndromiccongenitalhearingloss
AT mtayyarkalcioglu geneticsofnonsyndromiccongenitalhearingloss