Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/93080
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Type: Journal article
Title: Aspirin, ibuprofen, and the risk of colorectal cancer in Lynch Syndrome
Author: Ait Ouakrim, D.
Dashti, S.
Chau, R.
Buchanan, D.
Clendenning, M.
Rosty, C.
Winship, I.
Young, J.
Giles, G.
Leggett, B.
Macrae, F.
Ahnen, D.
Casey, G.
Gallinger, S.
Haile, R.
Le Marchand, L.
Thibodeau, S.
Lindor, N.
Newcomb, P.
Potter, J.
et al.
Citation: Journal of the National Cancer Institute, 2015; 107(9):1-11
Publisher: Oxford University Press
Issue Date: 2015
ISSN: 0027-8874
1460-2105
Statement of
Responsibility: 
Driss Ait Ouakrim, Seyedeh Ghazaleh Dashti, Rowena Chau, Daniel D. Buchanan, Mark Clendenning, Christophe Rosty, Ingrid M. Winship, Joanne P. Young, Graham G. Giles, Barbara Leggett, Finlay A. Macrae, Dennis J. Ahnen, Graham Casey, Steven Gallinger, Robert W. Haile, Loïc Le Marchand, Stephen N. Thibodeau, Noralane M. Lindor, Polly A. Newcomb, John D. Potter, John A. Baron, John L. Hopper, Mark A. Jenkins and Aung Ko Win
Abstract: Background: Inheritance of a germline mutation in one of the DNA mismatch repair (MMR) genes MLH1, MSH2, MSH6, and PMS2 causes a high risk of colorectal and other cancers (Lynch Syndrome). Use of aspirin has been shown to be associated with a reduced risk of colorectal cancer for the general population as well as for MMR gene mutation carriers. The aim of this study was to determine whether use of aspirin and ibuprofen in a nontrial setting is associated with the risk of colorectal cancer risk for MMR gene mutation carriers. Methods: We included 1858 participants in the Colon Cancer Family Registry who had been found to have a pathogenic germline mutation in a MMR gene (carriers). We used weighted Cox proportional hazards regression to estimate hazard ratios (HRs) and 95% confidence intervals (CIs). All statistical tests were two-sided. Results: A total of 714 carriers (38%) were diagnosed with colorectal cancer at a mean age of 42.4 (standard deviation 10.6) years. A reduced risk of colorectal cancer was associated with aspirin use (for 1 month to 4.9 years: HR = 0.49, 95% CI = 0.27 to 0.90, P = .02; for ≥5 years: HR = 0.25, 95% CI = 0.10 to 0.62, P = .003) and ibuprofen use (for 1 month to 4.9 years: HR = 0.38, 95% CI = 0.18 to 0.79, P = .009; for ≥5 years: HR = 0.26, 95% CI = 0.10 to 0.69, P = .007), compared with less than one month of use. Conclusion: Our results provide additional evidence that, for MMR gene mutation carriers, use of aspirin and ibuprofen might be effective in reducing their high risk of colorectal cancer.
Keywords: Humans; Colorectal Neoplasms; Colorectal Neoplasms, Hereditary Nonpolyposis; Aspirin; Ibuprofen; DNA Repair Enzymes; Adaptor Proteins, Signal Transducing; DNA-Binding Proteins; Nuclear Proteins; Anti-Inflammatory Agents, Non-Steroidal; Anticarcinogenic Agents; Registries; Prevalence; Proportional Hazards Models; Bias (Epidemiology); Confounding Factors (Epidemiology); Heterozygote; Germ-Line Mutation; Adult; Aged; Middle Aged; United States; Female; Male; MutS Homolog 2 Protein; Adenosine Triphosphatases; DNA Mismatch Repair; MutL Protein Homolog 1; Mismatch Repair Endonuclease PMS2
Rights: © The Author 2015.
RMID: 0030031217
DOI: 10.1093/jnci/djv170
Grant ID: http://purl.org/au-research/grants/nhmrc/1074383
http://purl.org/au-research/grants/nhmrc/1042021
Appears in Collections:Medicine publications

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