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Analysis of the STS gene in 40 patients with recessive X-linked ichthyosis: A high frequency of partial deletions in a Spanish population

AuthorsCañueto, Javier; Ciria, S.; González-Sarmiento, Rogelio
Issue Date2010
CitationJournal of the European Academy of Dermatology and Venereology 24(10): 1226-1229 (2010)
Abstract[Background]: Recessive X-linked ichthyosis (RXLI) (OMIM 308100) is a genodermatosis characterized by polygonal, dark, adherent and mild-to-moderate scales that normally improve during summer. RXLI is caused by a deficiency in steroid sulphatase (STS), whose gene has been located on the X chromosome (locus Xp22.3). Up to 90% of the mutations described in this gene are complete deletions. [Objectives]: Previous reports of partial deletion of STS gene in cases of RXLI prompted us to determine the incidence of these abnormalities in a Spanish population. [Methods]: We have studied exons 1, 5 and 10 of the STS gene by polymerase chain reaction in 40 patients with clinical features of RXLI. Results Our results revealed that 30 patients presented complete deletions (75%) while 10 patients had partial deletions (25%) a rate higher than that reported in the previous studies. [Conclusions]: Amplification of exons 1, 5 and 10 is reliable in screening RXLI in the population studied here. No correlation was found between phenotype and the extent of the deletions. © 2010 European Academy of Dermatology and Venereology.
Identifiersdoi: 10.1111/j.1468-3083.2010.03612.x
issn: 0926-9959
e-issn: 1468-3083
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