Identification of two novel mutations in the first Sicilian APECED patient with no R203X mutation in AIRE gene and review of Italian APECED genotypes
2012
Valenzise, Mariella | Waśniewska, Małgorzata | Mirabelli, Silvestro | De Luca, Filippo | Cervato, Sara | Betterle, Corrado
Aims of the present study are: 1) to report an additional Sicilian patient with autoimmune polyendocrinopathy-candidiasis-ectodermal-dystrophy (APECED), whose genotypic features are original, in that she is the first APECED patient with three coexisting mutations of Autoimmune Regulator (AIRE) gene, two of which had never been reported to date; 2) to review the genotypic epidemiology of APECED in Italy, in order to underline the great genetic heterogeneity of this disorder in Italian patients. Both the novel mutations of our new patient, named S107C and Q108fs respectively, were detected on exon 3 and were inherited by the mother, whereas the third one (T16M) was inherited by the father. Phenotypically, the present case is quite characteristic, in that she exhibited a classical clinical picture, with no original features. Conclusions: a) this is the seventh Sicilian APECED patient identified to date, and the first one with no R203X mutation; b) our data confirm that distribution of mutations may considerably vary according to different geographical distribution, within the same country, thus suggesting a potential founder effect.
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