Bowel (colorectal) cancer, Colon cancer
Results
Other
This trial was done to see if aspirin or resistant starch could help prevent bowel (colorectal) cancer developing in people with .
The trial was supported by Cancer Research UK. People could join between 1999 and 2005. The team have published several results papers between 2008 and 2022.
Recruitment start: 1 January 1999
Recruitment end: 10 March 2005
Please note: In order to join a trial you will need to discuss it with your doctor, unless otherwise specified.
Professor Sir John Burn
Stand Up To Cancer
Cancer Research UK
The European Union Biomed research programme
Medical Research Council (MRC)
National Institute for Health Research (NIHR)
Bayer Pharma AG
Barbour Foundation
Bayer Pharma first started to make aspirin in the 1890s, and people still use it all over the world. It is made from a natural product found in green plants which helps to protect the plants from infection.
Bayer Pharma provided the aspirin tablets and the placebo tablets for the CAPP2 trial. But they didn’t have any say in the research.
Last reviewed: 04 Sept 2026
CRUK internal database number: 15
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