Aspirin and COX-2 inhibitor use in patients with stage III colon cancer

Kimmie Ng, Jeffrey A. Meyerhardt, Andrew T. Chan, Kaori Sato, Jennifer A. Chan, Donna Niedzwiecki, Leonard B. Saltz, Robert J. Mayer, Al B. Benson, Paul L. Schaefer, Renaud Whittom, Alexander Hantel, Richard M. Goldberg, Alan P. Venook, Shuji Ogino, Edward L. Giovannucci, Charles S. Fuchs

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117 Scopus citations


We conducted a prospective, observational study of aspirin and COX-2 inhibitor use and survival in stage III colon cancer patients enrolled in an adjuvant chemotherapy trial. Among 799 eligible patients, aspirin use was associated with improved recurrence-free survival (RFS) (multivariable hazard ratio [HR] = 0.51, 95% confidence interval [CI] = 0.28 to 0.95), disease-free survival (DFS) (HR = 0.68, 95% CI = 0.42 to 1.11), and overall survival (OS) (HR = 0.63, 95% CI = 0.35 to 1.12). Adjusted HRs for DFS and OS censored at five years (in an attempt to minimize misclassification from noncancer death) were 0.61 (95% CI = 0.36 to 1.04) and 0.48 (95% CI = 0.23 to 0.99). Among 843 eligible patients, those who used COX-2 inhibitors had multivariable HRs for RFS, DFS, and OS of 0.53 (95% CI = 0.27 to 1.04), 0.60 (95% CI = 0.33 to 1.08), and 0.50 (95% CI = 0.23 to 1.07), and HRs of 0.47 (95% CI = 0.24 to 0.91) and 0.26 (95% CI = 0.08 to 0.81) for DFS and OS censored at five years. Aspirin and COX-2 inhibitor use may be associated with improved outcomes in stage III colon cancer patients.

Original languageEnglish
JournalJournal of the National Cancer Institute
Issue number1
StatePublished - 1 Jan 2015
Externally publishedYes


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