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Genetic variants of FOXA2: risk of type 2 diabetes and effect on metabolic traits in North Indians.

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العنوان: Genetic variants of FOXA2: risk of type 2 diabetes and effect on metabolic traits in North Indians.
المؤلفون: Tabassum, Rubina1, Chavali, Sreenivas1, Dwivedi, Om Prakash1, Tandon, Nikhil2, Bharadwaj, Dwaipayan1 db@igib.res.in
المصدر: Journal of Human Genetics. Nov2008, Vol. 53 Issue 11/12, p957-965. 9p. 3 Charts.
مصطلحات موضوعية: *GENETIC polymorphisms, *GENETICS, *DIABETES, *COHORT analysis, *PHENOTYPES
مستخلص: Here, we examined the association of genetic variants of FOXA2, an upstream activator of the β-cell transcription factor network, with type 2 diabetes and related phenotypes in North India. We genotyped three SNPs (rs1212275, rs1055080, rs6048205) and the (TCC) n repeat polymorphism in 1,656 participants comprising 1,031 patients with type 2 diabetes and 625 controls. SNPs rs1212275 and rs6048205 were uncommon (MAF < 5%) with similar distribution among patients and controls. We found a strong association of (TCC) n common allele A5 with type 2 diabetes [OR = 1.66 (95% CI 1.36–2.04, p = 5.9 × 10−7) for A5 homozygotes]. Obese individuals with A5A5 genotype had enhanced risk when segregated from normal-weight subjects [OR = 1.92 (95% CI 1.47–2.51), p = 1.6 × 10−6]. A5 was also nominally associated with higher fasting glucose ( p = 0.02) and lower fasting insulin ( p = 0.0028) and C-peptide ( p = 0.036) levels among controls. At the rs1055080 locus, GG was found to provide reduced risk among normal-weight subjects [OR = 0.59 (95% CI 0.40–0.88), p = 0.011]. Combination of protective GG and non-risk genotypes of (TCC) n showed reduced risk of type 2 diabetes both among normal-weight [OR = 0.43 (95% CI 0.29–0.65), p = 1.2 × 10−6] and obese individuals [0.47 (95% CI 0.34–0.64), p = 4.3 × 10−5]. For the first time we demonstrated that FOXA2 variants may affect risk of type 2 diabetes and metabolic traits in North India, however replication analyses in other cohorts are required to confirm the findings. [ABSTRACT FROM AUTHOR]
قاعدة البيانات: Academic Search Index
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