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Usher syndrome in Denmark: mutation Spectrum and some clinical observations

Permanent lenke
https://hdl.handle.net/10037/10328
DOI
https://doi.org/10.1002/mgg3.228
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article.pdf (288.9Kb)
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Dato
2016-05-12
Type
Journal article
Tidsskriftartikkel
Peer reviewed

Forfatter
Dad, Sheena; Dahl Rendtorff, Nanna; Tranebjærg, Lisbeth; Grønskov, Karen; Gasdal Karstensen, Helena; Brox, Vigdis; Nilssen, Øivind; Roux, Anne-Francoise; Rosenberg, Thomas; Jensen, Hanne; Birk Møller, Lisbeth
Sammendrag
Background:
Usher syndrome (USH) is a genetically heterogeneous deafness-blindness syndrome, divided into three clinical subtypes: USH1, USH2 and USH3.
Methods:
Mutations in 21 out of 26 investigated Danish unrelated individuals with USH were identified, using a combination of molecular diagnostic methods.
Results:
Before Next Generation Sequencing (NGS) became available mutations in nine individuals (1 USH1, 7 USH2, 1 USH3) were identified by Sanger sequencing of USH1C, USH2A or CLRN1 or by Arrayed Primer EXtension (APEX) method. Mutations in 12 individuals (7 USH1, 5 USH2) were found by targeted NGS of ten known USH genes. Five novel pathogenic variants were identified. We combined our data with previously published, and obtained an overview of the USH mutation spectrum in Denmark, including 100 unrelated individuals; 32 with USH1, 67 with USH2, and 1 with USH3. Macular edema was observed in 44 of 117 individuals. Olfactory function was tested in 12 individuals and found to be within normal range in all.
Conclusion:
Mutations that lead to USH1 were predominantly identified in MYO7A (75%), whereas all mutations in USH2 cases were identified in USH2A. The MYO7A mutation c.93C>A, p.(Cys31*) accounted for 33% of all USH1 mutations and the USH2A c.2299delG, p.(Glu767Serfs*21) variant accounted for 45% of all USH2 mutations in the Danish cohort.
Beskrivelse
Source: doi:10.1002/mgg3.228
Forlag
Wiley Open Access
Sitering
Dad, Dahl Rendtorff, Tranebjærg L, Grønskov K, Gasdal Karstensen, Brox V, Nilssen O, Ø, Roux, Rosenberg T, Jensen H, Birk Møller. Usher syndrome in Denmark: mutation Spectrum and some clinical observations. Molecular Genetics & Genomic Medicine. 2016;4(5):527-539
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  • Artikler, rapporter og annet (klinisk medisin) [1974]

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