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Forty-six genes causing nonsyndromic hearing impairment: Which ones should be analyzed in DNA diagnostics?

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Hilgert, Nele, Smith, Richard J.H., Van Camp, Guy·2009·Mutation Research/Reviews in Mutation Research

Abstract

Hearing impairment is the most common sensory disorder, present in 1 of every 500 newborns. With 46 genes implicated in nonsyndromic hearing loss, it is also an extremely heterogeneous trait. Here, we categorize for the first time all mutations reported in nonsyndromic deafness genes, both worldwide and more specifically in Caucasians. The most frequent genes implicated in autosomal recessive nonsyndromic hearing loss are GJB2, which is responsible for more than half of cases, followed by SLC26A4, MYO15A, OTOF, CDH23 and TMC1. None of the genes associated with autosomal dominant nonsyndromic hearing loss accounts for a preponderance of cases. Mutations are somewhat more frequently reported in WFS1, KCNQ4, COCH and GJB2. Only a minority of these genes is currently included in genetic diagnostics, the selection criteria typically reflecting: 1) high frequency as a cause of deafness (i.e. GJB2); 2) association with another recognizable feature (i.e. SLC26A4 and enlarged vestibular aqueduct); or 3) a recognizable audioprofile (i.e. WFS1). New and powerful DNA sequencing technologies have been developed over the past few years, but have not yet found their way into DNA diagnostics. Implementing these technologies is likely to happen within the next 5 years, and will cause a breakthrough in terms of power and cost efficiency. It will become possible to analyze most - if not all - deafness genes, as opposed to one or a few genes currently. This ability will greatly improve DNA diagnostics, provide epidemiological data on gene-based mutation frequencies, and reveal novel genotype-phenotype correlations.

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Metadata

Authors
Hilgert, N., Smith, R. J. H., & Van Camp, G.
Venue
Mutation Research/Reviews in Mutation Research
Publisher
Elsevier BV
Published
2009-03
Volume
681
Issue
2-3
Pages
189-196
ISSN
1383-5742 (ISSN-L)
OpenAlex
W2138261854
Cited by
465
References
26
FWCI
11.02
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Forty-six genes causing nonsyndromic hearing impairment: Which ones should be analyzed in DNA diagnostics? https://app.cochat.ai/papers/10.1016/j.mrrev.2008.08.002
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Hilgert, N., Smith, R. J. H., & Van Camp, G. (2009). Forty-six genes causing nonsyndromic hearing impairment: Which ones should be analyzed in DNA diagnostics? Mutation Research/Reviews in Mutation Research. https://doi.org/10.1016/j.mrrev.2008.08.002

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