Large-Scale Genome-Wide Meta-Analysis of Polycystic Ovary Syndrome Suggests Shared Genetic Architecture for Different Diagnosis Criteria

    December 2018 in “ PLOS Genetics
    Felix R. Day, Tugce Karaderi, Michelle R. Jones, Cindy Meun, Chunyan He, Alex Drong, Peter Kraft, Nan Lin, Hongyan Huang, Linda Broer, Reedik Mägi, Richa Saxena, Triin Laisk, Margrit Urbanek, M. Geoffrey Hayes, Guðmar Þorleifsson, Juan Fernández‐Tajes, Anubha Mahajan, Benjamin H. Mullin, Bronwyn Stuckey, Timothy D. Spector, Scott G. Wilson, Mark O. Goodarzi, Lea K. Davis, Barbara Obermayer‐Pietsch, André G. Uitterlinden, Verneri Anttila, Benjamin M. Neale, Marjo‐Riitta Järvelin, Bart C.J.M. Fauser, Irina Kowalska, Jenny A. Visser, Marianne Andersen, Ken K. Ong, Elisabet Stener‐Victorin, David A. Ehrmann, Richard S. Legro, Andres Salumets, Mark I. McCarthy, Laure Morin‐Papunen, Unnur Þorsteinsdóttir, Kári Stefánsson, Unnur Styrkársdóttir, John R. B. Perry, Andrea Dunaif, Joop S.E. Laven, Paul W. Franks, Cecilia M. Lindgren, Corrine K. Welt
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    TLDR The research found that PCOS has common genetic factors regardless of how it is diagnosed and is linked to metabolic and reproductive issues.
    The study conducted a genome-wide meta-analysis involving 10,074 PCOS cases and 103,164 controls to explore the genetic basis of polycystic ovary syndrome (PCOS) across different diagnostic criteria. It identified 14 genetic loci associated with PCOS, including three new loci, and found that the genetic architecture was consistent across different diagnostic criteria, with only one locus differing significantly. The study also revealed genetic correlations between PCOS and metabolic traits, menopause, depression, and male-pattern balding, suggesting shared biological pathways. Mendelian randomization analysis indicated that BMI and fasting insulin levels might be causal risk factors for PCOS. The findings support the hypothesis that PCOS has a common genetic basis underlying different phenotypes and is related to both metabolic and reproductive disorders.
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