A study to track bowel cancer cell DNA in the blood to predict whether cancer might return (TRACC)

This study is looking at using small pieces of the DNA of bowel cancer that circulate in the blood (ctDNA) to work out whether cancer might come back.

DNA is made of genes. Every cell has DNA including cancer cells. The cancer cells can shed small pieces of their DNA into the blood. This is circulating tumour DNA (or ctDNA).

This study is open to people with bowel cancer that has not spread to another part of the body and who are due to have surgery or have had surgery.