Artificial intelligence (AI) could help doctors identify early-stage bowel cancer patients who are most at risk of the disease coming back, a study has found. It could also help some people avoid unnecessary chemotherapy, according to researchers. For the study, academics from the University of Leeds used an AI algorithm to determine the level of CD3 – a type of immune cell – in early-stage bowel cancer tumours. After analysing tumour tissue samples from 868 patients taking part in the Quasar trial, the algorithm developed what researchers describe as a “CD3 Score”, which is based on the numbe…