Based at Queen’s University’s Sinclair Cancer Research Institute in Kingston, Ontario, the Canadian Cancer Trials Group (CCTG) is a national cooperative organization founded in 1980. CCTG designs and conducts phase I–III cancer clinical trials across more than 85 sites in Canada and over 40 countries worldwide. With a network of 2,100+ investigators and support for 600+ trials, it emphasizes rigorous science, patient-centred research, and innovation in oncology care.