| ACOSOG |
American College of Surgeons Oncology Group |
| CALGB |
Cancer and Leukemia Group B |
| COG |
Children's Oncology Group |
| ECOG |
Eastern Cooperative Oncology Group |
| GOG |
Gynecologic Oncology Group |
| NCCF |
National Childhood Cancer Foundation |
| NCCTG |
North Central Cancer Treatment Group |
| NCIC CTG |
National Cancer Institute of Canada Clinical Trials Group |
| RTOG |
Radiation Therapy Oncology Group |
| SWOG |
Southwest Oncology Group |
| Coalition of Cancer Cooperative Groups |