NDLI: Exome Sequencing Identifies a Founder Frameshift Mutation in an Alternative Exon of USH1C as the Cause of Autosomal Recessive Retinitis Pigmentosa with Late-Onset Hearing Loss

Content Provider	PubMed Central
Author	Samer, Khateb Zelinger, Lina Ben Yosef, Tamar Merin, Saul Crystal-shalit, Ornit Gross, Menachem Banin, Eyal Sharon, Dror
Editor	Hollander, Anneke I. Den
Copyright Year	2012
Abstract	We used a combined approach of homozygosity mapping and whole exome sequencing (WES) to search for the genetic cause of autosomal recessive retinitis pigmentosa (arRP) in families of Yemenite Jewish origin. Homozygosity mapping of two arRP Yemenite Jewish families revealed a few homozygous regions. A subsequent WES analysis of the two index cases revealed a shared homozygous novel nucleotide deletion (c.1220delG) leading to a frameshift (p.Gly407Glufs*56) in an alternative exon (#15) of USH1C. Screening of additional Yemenite Jewish patients revealed a total of 16 homozygous RP patients (with a carrier frequency of 0.008 in controls). Funduscopic and electroretinography findings were within the spectrum of typical RP. While other USH1C mutations usually cause Usher type I (including RP, vestibular dysfunction and congenital deafness), audiometric screening of 10 patients who are homozygous for c.1220delG revealed that patients under 40 years of age had normal hearing while older patients showed mild to severe high tone sensorineural hearing loss. This is the first report of a mutation in a known USH1 gene that causes late onset rather than congenital sensorineural hearing loss. The c.1220delG mutation of USH1C accounts for 23% of RP among Yemenite Jewish patients in our cohort.
Related Links	http://dx.doi.org/10.1371/journal.pone.0051566
Starting Page	51566
File Format	PDF
ISSN	19326203
e-ISSN	19326203
Journal	PLoS ONE
Issue Number	12
Volume Number	7
Language	English
Publisher	Public Library of Science
Publisher Date	2012-12-01
Access Restriction	Open
Rights Holder	Public Library of Science
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Agricultural and Biological Sciences(all) Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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