Societies
- AACR - American Association for Cancer Research
- AAHO - Armenian Association of Hematology and Oncology
- AAOC- Argentinian Association of Clinical Oncology
- ABC Global Alliance
- ACP - Association of Cancer Physicians
- AERIO - Association for Education and Research of Residents in Oncology
- AIOM - Italian Association of Medical Oncology
- ASCO - American Society of Clinical Oncology
- CAMO - Canadian Association of Medical Oncologists
- DGHO - German Society for Haematology and Medical Oncology
- DSKO - Danish Society for Clinical Oncology
- EONS - European Oncology Nursing Society
- EORTC - Eurepean Organisation for Research and Treatment of Cancer
- ESGO - European Society of Gynaecological Oncology
- ESO - European School of Oncology
- ESOP - European Society of Oncology Pharmacy
- ESP - The European Society of Pathology
- ESTRO - European Society for Radiotherapy and Oncology
- ETOP - European Thoracic Oncology Platform
- HDIO - Croatian Society of Medical Oncology
- HeSMO - Hellenic Society of Medical Oncology
- International Cancer Foundation
- ISCORT - Israeli Society for Clinical Oncology and Radiation Therapy
- JSMO - Japanese Society of Medical Oncology
- LaSMO - Latvian Society for Medical Oncology
- LiSMO - Lithuanian Society for Medical Oncology
- MASCC - Multinational Association of Supportive Care in Cancer
- MKOT - Hungarian Society of Clinical Oncology
- MOT - Hungarian Cancer Society
- OeGHO - Austrian Society for Haematology & Medical Oncology
- OEK - Cyprus Oncology Society
- PTOK - Polish Society of Clinical Oncology
- RSRMO - Romanian Society for Radiotherapy and Medical Oncology
- RUSSCO - Russian Society of Clinical Oncology
- SASMO - South African Society of Medical Oncology
- SBOC - Brazilian Society of Clinical Oncology
- SCOM - Chilean Society of Medical Oncology
- SEOM - Spanish Society of Medical Oncology
- SIOG - International Society of Geriatric Oncology
- SIOPE - European Society for Paediatric Oncology
- SLO - Luxembourg Society of Oncology
- SMeO - Mexican Society of Oncology
- SOF - Swedish Society of Oncology
- SOS - Slovak Oncology Society
- SPO - Portuguese Society of Oncology
Patient Advocates
- Alivia Foundation
- Diagnoza leukemie
- DiCE - Digestive Cancers Europe
- Europa Donna
- ECPC - European Cancer Patient Coalition
- IBTA - International Brain Tumour Alliance
- IKCC - International Kidney Cancer Coalition
- LePAF - Leukemia Patient Advocates Foundation
- LuCE - Lung Cancer Europe
- MPE - Myeloma Patients Europe
- Swallows Head and Neck Cancer Charity
- World bladder Cancer Patient Coalition