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Diabetic Medicine
Year: 2011  |  Volume: 28  |  Issue: 11  |  Page No.: 1381 - 1387

Association of a polymorphism of BTN2A1 with Type 2 diabetes mellitus in Japanese individuals

M. Hiramatsu, M. Oguri, K. Kato, T. Yoshida, T. Fujimaki, H. Horibe, K. Yokoi, S. Watanabe, K. Satoh, Y. Aoyagi, M. Tanaka, H. Yoshida, S. Shinkai, Y. Nozawa, T. Murohara and Y. Yamada    

Abstract: Aims  We previously showed that the C[RIGHTWARDS ARROW]T polymorphism (rs6929846) of BTN2A1 was significantly associated with myocardial infarction in Japanese individuals by a genome-wide association study. Given that diabetes mellitus is an important risk factor for myocardial infarction, the association of rs6929846 of BTN2A1 with myocardial infarction might be attributable, at least in part, to its effect on susceptibility to diabetes. The purpose of this study was to examine the relation of rs6929846 of BTN2A1 to Type 2 diabetes mellitus.

Methods  A total of 8650 Japanese individuals from two independent subject panels were examined: Panel A comprised 1141 individuals with Type 2 diabetes and 3161 control subjects and panel B comprised 1664 individuals with Type 2 diabetes and 2684 control subjects.

Results  The chi-square test revealed that rs6929846 of BTN2A1 was significantly related to the prevalence of Type 2 diabetes in subject panel A (P = 0.0002) and subject panel B (P = 0.006). Multivariable logistic regression analysis with adjustment for age, sex, body mass index and smoking status revealed that rs6929846 was significantly associated with Type 2 diabetes (P = 0.0006; odds ratio 1.25) in all individuals, with the T allele representing a risk factor for this condition. Multiple regression analysis with adjustment for age, sex and body mass index revealed that rs6929846 was significantly (P = 0.04) related to blood glycosylated haemoglobin content in control subjects.

Conclusions BTN2A1 may be a susceptibility gene for Type 2 diabetes in Japanese individuals.

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