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Polymorphisms in FTO and near TMEM18 associate with type 2 diabetes and predispose to younger age at diagnosis of diabetes
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Functional Pharmacology.
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Neuroscience, Functional Pharmacology.
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2013 (English)In: Gene, ISSN 0378-1119, E-ISSN 1879-0038, Vol. 527, no 2, 462-468 p.Article in journal (Refereed) Published
Abstract [en]

Variations in the FTO gene and near the TMEM18 gene are risk factors for common form of obesity, but have also been linked with type 2 diabetes (T2D). Our aim was to investigate the contribution of these variants to risk of T2D in a population in Latvia. Four single nucleotide polymorphisms (SNP) in the first and fourth intronic regions of FTO and one close to TMEM18 were genotyped in 987 patients with T2D and 1080 controls selected from the Latvian Genome Data Base (LGDB). We confirmed association of SNPs in the first intron (rs11642015, rs62048402 and rs9939609) of FTO and rs7561317 representing the TMEM18 locus with T2D. Association between SNP in FTO and T2D remained significant after correction for body mass index (BMI). The rs57103849 located in the fourth intron of FTO and rs7561317 in TMEM18 showed BMI independent association with younger age at diagnosis of T2D. Our results add to the evidence that BMI related variants in and near FTO and TMEM18 may increase the risk for T2D not only through secondary effects of obesity. The influence of variants in the fourth intron of the FTO gene on development of T2D may be mediated by mechanisms other than those manifested by SNPs in the first intron of the same gene.

Place, publisher, year, edition, pages
2013. Vol. 527, no 2, 462-468 p.
Keyword [en]
Association study, Latvian population, Obesity, Type 2 diabetes, FTO, TMEM18
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:uu:diva-208356DOI: 10.1016/j.gene.2013.06.079ISI: 000323872300005OAI: oai:DiVA.org:uu-208356DiVA: diva2:652572
Available from: 2013-10-01 Created: 2013-09-30 Last updated: 2017-12-06Bibliographically approved

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Jacobsson, Josefin A.Almén, Markus SällmanSchiöth, Helgi B.

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