Mutational screening of SF1 and WNT4 in Tunisian women with premature ovarian failure
2012
Lakhal, Besma | Ben-Hadj-Khalifa, Sonia | Bouali, Nouha | Philipert, Pascal | Audran, Françoise | Braham, Rim | Hatem, Elghezal | Sultan, Charles | Saad, Ali
BACKGROUND: WNT4 and SF1 genes play an important role in ovarian development. They constitute coherent candidate genes associated with premature ovarian failure (POF) pathogenesis. METHODS: We sequenced the coding region of WNT4 and SF1 in 55 Tunisian women with POF and 100 healthy controls. RESULTS: We identified a synonymous variation in WNT4 (c.99G>A, p.Ser33Ser) and a substitution (c.G437C) in SF1 gene inducing G146 to Ala (GGG–GCG) missense mutation. WNT4 (c.99G>A, p.Ser33Ser) was not associated with POF pathology. However, a positive association of SF1 Gly146Ala polymorphism was noted. Gly146Ala minor allele frequency was significantly higher (p=0.029) in POF patients versus controls and Ala allele containing genotypes (p=0.005) were positively associated with POF pathology. The carriage of 146Ala allele was also associated with a significant reduction in estradiol plasma levels. CONCLUSIONS: SF1 Gly146Ala polymorphism seems to be associated with POF pathology in the Tunisian population likely by reducing estradiol levels.
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