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  • Title: High frequency of the V548A fs X572 XPC mutation in Tunisia: implication for molecular diagnosis.
    Author: Ben Rekaya M, Messaoud O, Talmoudi F, Nouira S, Ouragini H, Amouri A, Boussen H, Boubaker S, Mokni M, Mokthar I, Abdelhak S, Zghal M.
    Journal: J Hum Genet; 2009 Jul; 54(7):426-9. PubMed ID: 19478817.
    Abstract:
    Xeroderma pigmentosum (XP, OMIM 278700-278780) is a group of autosomal recessive diseases characterized by hypersensitivity to UV rays. There are seven complementation groups of XP (XPA to XPG) and XPV. Among them, the XP group C (XP-C) is the most prevalent type in Western Europe and in the United States. We report here on the clinical and genetic investigation of XP-C patients in 14 Tunisian families. As the XPC V548A fs X572 mutation has been identified in Algerian and Moroccan populations, Tunisian patients were first screened for this mutation by a direct sequencing of exon 9 of the XPC gene. All patients with a severe clinical form had this mutation, thus showing the homogeneity of the mutational spectrum of XPC in Tunisia. A potential founder effect was searched and confirmed by haplotype analysis. Taking into account the similarity of the genetic background, we propose a direct screening of this mutation as a rapid and cost-effective tool for the diagnosis of XP-C in North Africa.
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