AJCC TNM cancer staging, licensed and free for clinicians
ONCOassist has licensed the AJCC TNM staging criteria from the American Joint Committee on Cancer. Oncology professionals can stage a cancer step by step in seconds using the 7th and 8th editions, as well as selected Version 9 protocols.
Version 9 protocols in ONCOassist
Version 9 protocols are available for the following sites and tumour types:
- Anus
- Appendix carcinoma
- Cervix uteri
- Diffuse pleural mesothelioma
- Lung
- Nasopharynx
- Neuroendocrine tumours of the appendix
- Neuroendocrine tumours of the colon and rectum
- Neuroendocrine tumours of the duodenum and ampulla of Vater
- Neuroendocrine tumours of the jejunum and ileum
- Neuroendocrine tumours of the pancreas
- Neuroendocrine tumours of the stomach
- HPV-associated oropharynx
- Salivary glands
- Thymus
- Vulva
The staging tool is free for healthcare professionals in the ONCOassist app and web app.
What is AJCC TNM staging?
The AJCC staging system, developed by the American Joint Committee on Cancer, describes how far a cancer has progressed. It is built on the TNM classification:
- T: size and extent of the primary tumour
- N: spread to regional lymph nodes
- M: presence of distant metastasis
T, N and M categories are combined along with additional prognostic factors for some cancers, such as breast, prostate and oesophageal cancer, to determine the overall stage group.
Which AJCC edition should I use?
The AJCC 8th edition is in wide use. AJCC has been releasing Version 9 protocols cancer by cancer since 2021. Use the edition specified by your institution, tumour registry or trial protocol.
Staging in ONCOassist
- Guided, step-by-step T, N and M selection with the stage group calculated for you
- 7th and 8th edition criteria, and Version 9 criteria for selected cancers
- Free for healthcare professionals, on iOS, Android and the web
Stage your next patient in ONCOassist
Free for healthcare professionals on iOS, Android and the web.
Frequently asked questions
Is AJCC staging free in ONCOassist?
Yes. ONCOassist licenses the AJCC criteria and provides them free to healthcare professionals.
What does AJCC stand for?
American Joint Committee on Cancer.
Medically reviewed by Dr. Lakshmi Ramachandran, MBBS (JIPMER, India), CCEPC, MD Radiation Oncology (JIPMER, India), Clinical Officer, ONCOassist. Last reviewed November 2026.