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Plasma adiponectin is strongly associated with various components of metabolic syndrome, type 2 diabetes and cardiovascular outcomes. Concentrations are highly heritable and differ between men and women. We therefore aimed to investigate the genetics of plasma adiponectin in men and women.We combined genome-wide association scans of three population-based studies including 4659 persons. For the replication stage in 13795 subjects, we selected the 20 top signals of the combined analysis, as well as the 10 top signals with p-values less than 1.0 x 10(-4) for each the men- and the women-specific analyses. We further selected 73 SNPs that were consistently associated with metabolic syndrome parameters in previous genome-wide association studies to check for their association with plasma adiponectin.The ADIPOQ locus showed genome-wide significant p-values in the combined (p=4.3 x 10(-24)) as well as in both women- and men-specific analyses (p=8.7 x 10(-17) and p=2.5 x 10(-11), respectively). None of the other 39 top signal SNPs showed evidence for association in the replication analysis. None of 73 SNPs from metabolic syndrome loci exhibited association with plasma adiponectin (p>0.01).We demonstrated the ADIPOQ gene as the only major gene for plasma adiponectin, which explains 6.7% of the phenotypic variance. We further found that neither this gene nor any of the metabolic syndrome loci explained the sex differences observed for plasma adiponectin. Larger studies are needed to identify more moderate genetic determinants of plasma adiponectin.

Original publication

DOI

10.1016/j.atherosclerosis.2009.11.035

Type

Journal article

Journal

Atherosclerosis

Publication Date

02/2010

Volume

208

Pages

412 - 420

Addresses

Department of Epidemiology and Preventive Medicine, Regensburg University Medical Center, Regensburg, Germany.

Keywords

Humans, Cardiovascular Diseases, Metabolic Syndrome X, Computational Biology, Sex Factors, Gene Expression Regulation, Genotype, Phenotype, Polymorphism, Genetic, Polymorphism, Single Nucleotide, Europe, Female, Male, Adiponectin, Genome-Wide Association Study