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Mol Genet Metab. 2004 Feb;81(2):122-6.

Association of the calpain-10 gene with type 2 diabetes mellitus in a Mexican population.

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Department of Biochemistry, Medicine and Human Genetics, The University of Chicago, 5841 S. Maryland Ave., MC1028, Chicago, IL 60637, USA.


Variation in the calpain-10 gene (CAPN10) has been associated with risk of type 2 diabetes in the Mexican American population of Starr County, Texas. We typed five polymorphisms in the calpain-10 gene (SNP-43, -43, -63, and -110 and Indel-19) to test for association with type 2 diabetes in 248 individuals representative of the mestizo population of Mexico City and Orizaba, Mexico including 134 patients with type 2 diabetes and 114 subjects with normal fasting blood glucose levels. We found a significant difference in SNP-44 allele and genotype frequencies between type 2 diabetic and non-diabetic subjects. The rare allele at SNP-44 was associated with increased risk of type 2 diabetes (odds ratio (OR)=2.72, 95% confidence interval (CI)=1.16-6.35, P=0.017). SNP-110, which is in perfect linkage disequilibrium with SNP-44, was also associated with type 2 diabetes. The SNP-43, Indel-19, and SNP-63 haplogenotype 112/121 associated with significantly increased risk (OR=2.16, 95% CI=1.31-3.57) of type 2 diabetes in Mexican Americans was not associated with significantly increased in risk in Mexicans (OR=1.15, 95% CI=0.57-2.34). The results suggest that variation in CAPN10 affects risk of type 2 diabetes in the mestizo population of central Mexico (Mexico City and Orizaba) and in Mexican Americans (Starr County, Texas).

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