The immunoscore is a predictive tool that scores cancer patients based on an evaluation of their adaptive immunity. In this interview, Jerome Galon, PhD, of Cordeliers Research Center, Paris, France, who helped develop the immunoscore, gives an overview of its current usage in the risk stratification of colon cancer patients in Europe, in addition to its potential in other types of cancer and as a predictive biomarker of treatment responses. This video was recorded at the 2017 National Cancer Research Institute (NCRI) Conference, held in Liverpool, UK.