On 1–3 December 2022, the 17th Days of Diagnostic, Preventive, and Experimental Oncology will take place in Olomouc. This event will lead up to the Czech Cancer Research Annual Meeting and the 17th Symposium of Molecular Pathology. For many years, this multidisciplinary event has been helping to create the right environment for the development of oncology research, exchange of experience, and formation of new collaborations.