The Children’s Oncology Group (COG)

Studies to identify causes of the cancers that develop in children: The Children’s Oncology Group (COG) (http://www.childrensoncologygroup.org) is evaluating potential risk factors for a variety of childhood cancers. Very large studies have been completed of childhood acute lymphoblastic leukemia, acute myeloid leukemia, non-Hodgkin lymphoma, primitive neuroectodermal tumors of the brain, astrocytoma, neuroblastoma, and germ cell tumors. One large study, the Childhood Cancer Survivor Study, is evaluating the risks of second cancers related to radiation therapy and chemotherapy received by survivors of childhood cancer as part of treatment for their primary cancer