Genome-wide association study and premature ovarian failure.
Premature ovarian failure (POF) is defined as an amenorrhea for more than 4months, associated with elevated gonadotropins, usually higher than 20mIU/ml, occurring in a woman before the age of 40. Some candidate genes have been identified in the past 15years, such as FOXL2, FSHR, BMP15, GDF9, Xfra premutation. However, POF etiology remains unknown in more than 90% of cases. The first strategy to identify candidate gene, apart from studying genes involved in ovarian failure in animal models, relies on the study of X chromosome deletions and X;autosome translocations in patients. The second strategy is based on linkage analysis, the third one on Comparative Genomic Hybridization (CGH) array. The latest strategy relies on Genome-Wide Association Studies (GWAS). This technique consists in screening single nucleotide polymorphisms (SNPs) in patients and controls. So far, three studies have been performed and have identified different loci potentially linked to POF, such as PTHB1 and ADAMTS19. However, replications in independent cohorts need to be performed. GWAS studies on large cohorts of women with POF should find new candidate genes in the near future.
Christin-Maitre
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Reproductive Endocrine Unit, Hôpital Saint-Antoine, ER9, Université Paris VI, 75012 Paris, France. sophie.christin-maitre@sat.aphp.fr
Tachdjian
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G
D000328:Adult; D055430:Bone Morphogenetic Protein 15 / Q000235:genetics; D002874:Chromosome Mapping; D005260:Female; D000074842:Forkhead Box Protein L2; D051858:Forkhead Transcription Factors / Q000235:genetics; D055106:Genome-Wide Association Study / Q000379:methods*; D055429:Growth Differentiation Factor 9 / Q000235:genetics; D006801:Humans; D009154:Mutation; D020641:Polymorphism, Single Nucleotide; D016649:Primary Ovarian Insufficiency / Q000235:genetics*; D011962:Receptors, FSH / Q000235:genetics; D012016:Reference Values
C525901:BMP15 protein, human; D055430:Bone Morphogenetic Protein 15; C421604:FOXL2 protein, human; D000074842:Forkhead Box Protein L2; D051858:Forkhead Transcription Factors; C525897:GDF9 protein, human; D055429:Growth Differentiation Factor 9; D011962:Receptors, FSH