期刊
HEPATOLOGY
卷 57, 期 2, 页码 648-655出版社
WILEY
DOI: 10.1002/hep.26092
关键词
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资金
- National Institutes of Health [CA100882, CA128633, CA165076]
- Mayo Clinic Center for Cell Signaling in Gastroenterology [NIDDK P30DK084567]
- Mayo Clinic Cancer Center [CA15083]
- Mayo Foundation
The associations between diabetes, smoking, obesity, and intrahepatic cholangiocarcinoma (ICC) risk remain inconclusive. Metformin is purportedly associated with a reduced risk for various cancers. This case-control study evaluated risk factors for ICC and explored the effects of metformin on ICC risk in a clinic/hospital-based cohort. ICC patients observed at the Mayo Clinic (Rochester, MN) between January 2000 and May 2010 were identified. Age, sex, ethnicity, and residential area-matched controls were selected from among Mayo Clinic Biobank participants. The associations between potential factors and ICC risk were determined. Six hundred and twelve cases and 594 controls were identified. Factors associated with increased ICC risk included biliary tract diseases (adjusted odds ratio [AOR]: 81.8; 95% confidence interval [CI]: 11.2-598.8; P < 0.001), cirrhosis (AOR, 8.0; 95% CI: 1.8-36.5; P = 0.007), diabetes (AOR, 3.6; 95% CI: 2.3-5.5; P < 0.001), and smoking (AOR, 1.6; 95% CI: 1.3-2.1; P < 0.001). Compared to diabetic patients not treated with metformin, the odds ratio (OR) for ICC for diabetic patients treated with metformin was significantly decreased (OR, 0.4; 95% CI: 0.2-0.9; P = 0.04). Obesity and metabolic syndrome were not associated with ICC. Conclusion: This study confirmed diabetes and smoking as independent risk factors for ICC. A novel finding was that treatment with metformin was significantly associated with a 60% reduction in ICC risk in diabetic patients. (HEPATOLOGY 2013;57:648-655)
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