Type 2 diabetes mellitus, blood cholesterol, triglyceride and colorectal cancer risk in Lynch syndrome
Date
2019-11-12Source Title
British Journal of CancerPublisher
NATURE PUBLISHING GROUPAffiliation
Clinical PathologyMedicine and Radiology
Melbourne School of Population and Global Health
Academic Services and Registrar
Metadata
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Journal ArticleCitations
Dashti, S. G., Li, W. Y., Buchanan, D. D., Clendenning, M., Rosty, C., Winship, I. M., Macrae, F. A., Giles, G. G., Hardikar, S., Hua, X., Thibodeau, S. N., Figueiredo, J. C., Casey, G., Haile, R. W., Gallinger, S., Le Marchand, L., Newcomb, P. A., Potter, J. D., Lindor, N. M. ,... Win, A. K. (2019). Type 2 diabetes mellitus, blood cholesterol, triglyceride and colorectal cancer risk in Lynch syndrome. BRITISH JOURNAL OF CANCER, 121 (10), pp.869-876. https://doi.org/10.1038/s41416-019-0580-9.Access Status
Access this item via the Open Access locationOpen Access at PMC
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6888855NHMRC Grant code
NHMRC/1141746Abstract
BACKGROUND: Type 2 diabetes mellitus and high total cholesterol and triglycerides are known to be associated with increased colorectal cancer risk for the general population. These associations are unknown for people with a germline DNA mismatch repair gene mutation (Lynch syndrome), who are at high risk of colorectal cancer. METHODS: This study included 2023 (56.4% female) carriers with a mismatch repair gene mutation (737 in MLH1, 928 in MSH2, 230 in MSH6, 106 in PMS2, 22 in EPCAM) recruited by the Colon Cancer Family Registry between 1998 and 2012. Weighted Cox regression was used to estimate the hazard ratios (HR) and 95% confidence intervals (CI) for the associations between self-reported type 2 diabetes, high cholesterol, triglyceride and colorectal cancer risk. RESULTS: Overall, 802 carriers were diagnosed with colorectal cancer at a median age of 42 years. A higher risk of colorectal cancer was observed in those with self-reported type-2 diabetes (HR 1.92; 95% CI, 1.03-3.58) and high cholesterol (HR 1.76; CI 1.23-2.52) compared with those without these conditions. There was no evidence of high triglyceride being associated with colorectal cancer risk. CONCLUSION: For people with Lynch syndrome, self-reported type-2 diabetes mellitus and high cholesterol were associated with increased colorectal cancer risk.