Type 2 diabetes mellitus, blood cholesterol, triglyceride and colorectal cancer risk in Lynch syndrome

S. Ghazaleh Dashti, Wing Yan Li, Daniel D. Buchanan, Mark Clendenning, Christophe Rosty, Ingrid M. Winship, Finlay A. Macrae, Graham G. Giles, Sheetal Hardikar, Xinwei Hua, Stephen N. Thibodeau, Jane C. Figueiredo, Graham Casey, Robert W. Haile, Steven Gallinger, Loïc Le Marchand, Polly A. Newcomb, John D. Potter, Noralane M. Lindor, John L. HopperMark A. Jenkins, Aung Ko Win

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)869-876
Number of pages8
JournalBritish journal of cancer
Volume121
Issue number10
DOIs
StatePublished - Nov 12 2019

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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    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), 869-876. https://doi.org/10.1038/s41416-019-0580-9