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Association of TCF7L2 Gene Polymorphisms with T2DM in the Population of Juana Koslay, San Luis Province, Argentina

DOI: 10.4236/oalib.1101419   PDF   HTML   XML   886 Downloads   1,363 Views   Citations

Abstract

Polymorphisms in the gene coding for transcription factor 7 like 2 (TCF7L2) are recognized as the strongest common genetic risk factors for Type 2 Diabetes Mellitus (T2DM) across multiple ethnicities. This study was conducted to evaluate an association between TCF7L2 variants and diabetes susceptibility in the population of Juana Koslay, San Luis, Argentina. We genotyped 2 single nucleotide polymorphisms (SNP) rs7903146 and rs12255372 in controls and diabetic subjects. Association with T2DM was found for both SNPs rs7903146 and rs12255372 in the whole sample (under a dominant genetic model, the odds ratios (OR) were 3.43, 95% CI [1.879 - 6.255], p < 0.0001 and OR = 4.40, 95% CI [2.318 - 8.351], p < 0.0001, respectively). The risk conferred by homozygotes is much higher than the heterozygote carriers and it is marked in case of rs7903146. The haplotype that consisted of two minor alleles (TT) or the haplotypes carrying at least one of the minor alleles at SNP rs7903146 or rs12255372 (i.e. CT or TG) were more frequent in the group of T2DM. The impact of TCF7L2 variation on T2DM risk in Juana Koslay population is compatible with that demonstrated by a range of studies conducted in various ethnic groups.

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Siewert, S. , Márquez, F. , Mendoza, G. , Fernández, G. , González, I. and Ojeda, M. (2015) Association of TCF7L2 Gene Polymorphisms with T2DM in the Population of Juana Koslay, San Luis Province, Argentina. Open Access Library Journal, 2, 1-10. doi: 10.4236/oalib.1101419.

Conflicts of Interest

The authors declare no conflicts of interest.

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