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A Mendelian Randomization Study of Circulating Uric Acid and Type 2 Diabetes
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2015 (English)In: Diabetes, ISSN 0012-1797, E-ISSN 1939-327X, Vol. 64, no 8, 3028-3036 p.Article in journal (Refereed) Published
Abstract [en]

We aimed to investigate the causal effect of circulating uric acid concentrations on type 2 diabetes risk. A Mendelian randomization study was performed using a genetic score with 24 uric acid-associated loci. We used data of the European Prospective Investigation into Cancer and Nutrition (EPIC)-InterAct case-cohort study, comprising 24,265 individuals of European ancestry from eight European countries. During a mean (SD) follow-up of 10 (4) years, 10,576 verified incident case subjects with type 2 diabetes were ascertained. Higher uric acid was associated with a higher diabetes risk after adjustment for confounders, with a hazard ratio (HR) of 1.20 (95% CI 1.11, 1.30) per 59.48 mu mol/L (1mg/dL) uric acid. The genetic score raised uric acid by 17 mu mol/L (95% CI 15, 18) per SD increase and explained 4% of uric acid variation. By using the genetic score to estimate the unconfounded effect, we found that a 59.48 mu mol/L higher uric acid concentration did not have a causal effect on diabetes (HR 1.01 [95% CI 0.87, 1.16]). Including data from the Diabetes Genetics Replication And Meta-analysis (DIAGRAM) consortium, increasing our dataset to 41,508 case subjects with diabetes, the summary odds ratio estimate was 0.99 (95% CI 0.92, 1.06). In conclusion, our study does not support a causal effect of circulating uric acid on diabetes risk. Uric acid-lowering therapies may therefore not be beneficial in reducing diabetes risk.

Place, publisher, year, edition, pages
2015. Vol. 64, no 8, 3028-3036 p.
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Endocrinology and Diabetes
URN: urn:nbn:se:umu:diva-107159DOI: 10.2337/db14-0742ISI: 000358671300040PubMedID: 25918230OAI: diva2:850023
Available from: 2015-08-31 Created: 2015-08-19 Last updated: 2016-05-18Bibliographically approved

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