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Tissue Antigens. 2004 Jan;63(1):72-4.

The human leukocyte antigen genotype has a modest effect on the insulin gene polymorphism-associated susceptibility to type 1 diabetes in the Finnish population.

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1
JDRF Centre for Prevention of Type 1 Diabetes, Department of Virology, University of Turku, Turku, Finland. aplaine@utu.fi

Abstract

In addition to the known human leukocyte antigen (HLA)-associated risk, polymorphisms of insulin gene region show association with type 1 diabetes. We analyzed possible interactions between the HLA class II genotypes and -2221 MspI (insulin) INS gene polymorphism in Finnish population, using a series of 1331 diabetic children and 2222 healthy newborns. C/C genotype was increased among diabetic children compared to the controls (83.2 vs 70.1%). This genotype was slightly more common in diabetic children with low or moderate HLA-associated risk than in those with high risk, but INS gene effect was clear in all major HLA-risk genotypes and, thus, can be used as an additional risk prediction marker, irrespective of HLA genotypes.

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