The leaflet on this page is intended for people who have been offered a genetic test to look for inherited changes (variants) in a group of genes that may explain why they have developed bowel polyps.
This testing is also offered to patients who have been diagnosed with bowel or endometrial (womb) cancer under the age of 40, as early-onset cancer may be linked to inherited genetic conditions.
Changes in these genes can increase the risk of developing further bowel polyps, bowel cancer, and in some cases, other types of cancer.