UNDATED (CNN) -- Taking aspirin can extend the life of some colon cancer patients, according to a new study.
Researchers looked at more than 900 patients with colorectal cancer.
They found those whose tumors had a mutation in a key gene lived significantly longer after taking aspirin.
Patients who did not have the gene mutation in their tumors did not seem to benefit from aspirin.
Colorectal cancer is the second leading cause of cancer-related deaths in American men and women.
The study appears in the New England Journal of Medicine.