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Association between variations in the fat mass and obesity-associated gene and pancreatic cancer risk: a case-control study in Japan.


ABSTRACT: It is clear that genetic variations in the fat mass and obesity-associated (FTO) gene affect body mass index and the risk of obesity. Given the mounting evidence showing a positive association between obesity and pancreatic cancer, this study aimed to investigate the relation between variants in the FTO gene, obesity and pancreatic cancer risk.We conducted a hospital-based case-control study in Japan to investigate whether genetic variations in the FTO gene were associated with pancreatic cancer risk. We genotyped rs9939609 in the FTO gene of 360 cases and 400 control subjects. An unconditional logistic model was used to estimate the odds ratio (OR) and 95% confidence interval (CI) for the association between rs9939609 and pancreatic cancer risk.The minor allele frequency of rs9939609 was 0.18 among control subjects. BMI was not associated with pancreatic cancer risk. Compared with individuals with the common homozygous TT genotype, those with the heterozygous TA genotype and the minor homozygous AA genotype had a 48% (OR=1.48; 95%CI: 1.07-2.04), and 66% increased risk (OR=1.66; 95%CI: 0.70-3.90), respectively, of pancreatic cancer after adjustment for sex, age, body mass index, cigarette smoking and history of diabetes. The per-allele OR was 1.41 (95%CI: 1.07-1.85). There were no significant interactions between TA/AA genotypes and body mass index.Our findings indicate that rs9939609 in the FTO gene is associated with pancreatic cancer risk in Japanese subjects, possibly through a mechanism that is independent of obesity. Further investigation and replication of our results is required in other independent samples.

SUBMITTER: Lin Y 

PROVIDER: S-EPMC3716552 | biostudies-literature | 2013 Jul

REPOSITORIES: biostudies-literature

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Association between variations in the fat mass and obesity-associated gene and pancreatic cancer risk: a case-control study in Japan.

Lin Yingsong Y   Ueda Junko J   Yagyu Kiyoko K   Ishii Hiroshi H   Ueno Makoto M   Egawa Naoto N   Nakao Haruhisa H   Mori Mitsuru M   Matsuo Keitaro K   Kikuchi Shogo S  

BMC cancer 20130708


<h4>Background</h4>It is clear that genetic variations in the fat mass and obesity-associated (FTO) gene affect body mass index and the risk of obesity. Given the mounting evidence showing a positive association between obesity and pancreatic cancer, this study aimed to investigate the relation between variants in the FTO gene, obesity and pancreatic cancer risk.<h4>Methods</h4>We conducted a hospital-based case-control study in Japan to investigate whether genetic variations in the FTO gene wer  ...[more]

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