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Novel compound heterozygous MYO7A mutations in Moroccan families with autosomal recessive non-syndromic hearing loss

Article scientifique 2017 Anglais

Résumé

The MYO7A gene encodes a protein belonging to the unconventional myosin super family. Mutations within MYO7A can lead to either non syndromic hearing loss or to the Usher syndrome type 1B (USH1B). Here, we report the results of genetic analyses performed on Moroccan families with autosomal recessive non syndromic hearing loss that identified two families with compound heterozygous MYO7A mutations. Five mutations (c.6025delG, c.6229T>A, c.3500T>A, c.5617C>T and c.4487C>A) were identified in these families, the latter presenting two differently affected branches. Multiple bioinformatics programs and molecular modelling predicted the pathogenic effect of these mutations. In conclusion, the absence of vestibular and retinal symptom in the affected patients suggests that these families have the isolated non-syndromic hearing loss DFNB2 (nonsyndromic autosomal recessive hearing loss) presentation, instead of USH1B.

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Bakhchane, A., Charif, M., Bousfiha, A., Boulouiz, R., Nahili, H., Rouba, H., Charoute, H., Lenaers, G., Barakat, A. (2017). Novel compound heterozygous MYO7A mutations in Moroccan families with autosomal recessive non-syndromic hearing loss. https://doi.org/10.1371/journal.pone.0176516

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Auteur(s)

Amina Bakhchane Majida Charif Amale Bousfiha Redouane Boulouiz Halima Nahili Hassan Rouba Hicham Charoute Guy Lenaers Abdelhamid Barakat

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