The Children´s Oncology Group

The Children s Oncology Group, a National Cancer Institute supported clinical trials group, is the world´s largest organization devoted exclusively to childhood and adolescent cancer research. The Children´s Oncology Group (COG) unites more than 7.500 experts in childhood cancer at more than 200 leading children´s hospitals, universities, and cancer centers across North America, Australia, New Zealand, and Europe in the fight against childhood cancer.