CUPID is a unique network that brings like- minded people and organisations together to develop a research agenda and a knowledge base through information exchange about a more equitable and inclusive cancer prevention strategy for people with intellectual disabilities. A key issue is that the intellectual disability population in individual countries are generally too small to address this issue nationally. Thus the crucial importance of creating a collaborative pan-European network of interdisciplinary researchers including peer researchers with intellectual disabilities cannot be underestimated. CUPID will exchange existing knowledge, progress the state of the art and promote collaboration to develop socially just and inclusive cancer prevention strategies for and with people with intellectual disabilities and interdisciplinary stakeholders.