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Genome-wide SNP-Based Linkage Scan Identifies a Locus on 8q24 for an Age-Related Hearing Impairment Trait
University of Antwerp, Belgium .
University of Antwerp, Belgium .
(University Hospital of Antwerp, Belgium)
University of Antwerp, Belgium .
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2008 (English)In: American Journal of Human Genetics, ISSN 0002-9297, E-ISSN 1537-6605, Vol. 83, no 3, 401-407 p.Article in journal (Refereed) Published
Abstract [en]

Age-related hearing impairment (ARHI), or presbycusis, is a very common multifactorial disorder. Despite the knowledge that genetics play an important role in the etiology of human ARHI as revealed by heritability studies, to date, its precise genetic determinants remain elusive. Here we report the results of a cross-sectional family-based genetic study employing audiometric data. By using principal component analysis, we were able to reduce the dimensionality of this multivariate phenotype while capturing most of the variation and retaining biologically important features of the audiograms. We conducted a genome-wide association as well as a linkage scan with high-density SNP microarrays. Because of the presence of genetic population substructure, association testing was stratified after which evidence was combined by meta-analysis. No association signals reaching genome-wide significance were detected. Linkage analysis identified a linkage peak on 8q24.13-q24.22 for a trait correlated to audiogram shape. The signal reached genome-wide significance, as assessed by simulations. This finding represents the first locus for an ARHI trait.

Place, publisher, year, edition, pages
2008. Vol. 83, no 3, 401-407 p.
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URN: urn:nbn:se:liu:diva-101436DOI: 10.1016/j.ajhg.2008.08.002PubMedID: 18760390OAI: diva2:666267
Available from: 2013-11-22 Created: 2013-11-22 Last updated: 2013-12-17

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Mäki-Torkko, Elina
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Faculty of Health SciencesDepartment of ENT - Head and Neck Surgery UHL
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