# OncoTree cancer classification

Source: https://onco.cc/terms/oncotree-term/  
OnCo record `oncotree-term` (Term). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)"; commercial use needs a licence.

## TL;DR

OncoTree is a hierarchy of cancer types from tissue down to subtype, with short codes such as LUAD and BRCA, built for precision oncology and used by cBioPortal and AACR GENIE.

## Summary

OncoTree, maintained by Memorial Sloan Kettering, organises cancer types as a tree from tissue of origin through histology to molecular subtype, each node with a code, and maps to NCIt and UMLS concepts; cBioPortal study data and AACR Project GENIE label samples with OncoTree codes. TCGA project codes (BRCA, LUAD) coincide with many OncoTree codes but are cohort names, not a classification. OnCo records OncoTree on the open-source map as an open standard.

## Fields

- Kind: Term
- Last checked: 2026-09-24
- Also known as: OncoTree; OncoTree code; OncoTree codes; OncoTree classification
- Tags: cansim-terms

## Notes

- Listed in the CanSim terms map 1.0.0 (docs/onco/terms.json, generated 2026-09-24), CC BY 4.0, attribution: CanSim project, an open, public-data-first cancer foundation-model programme; CanSim page path /terms/oncotree.

## Sources

- OncoTree (Memorial Sloan Kettering): https://oncotree.mskcc.org/
- cBioPortal: https://www.cbioportal.org/

## Connected records

- collections: [AACR Project GENIE](https://onco.cc/collections/genie/), [cBioPortal for Cancer Genomics](https://onco.cc/collections/cbioportal/)
- terms: [Cancer AI vocabulary (CanSim terms map)](https://onco.cc/terms/cancer-ai-vocabulary/), [ICD-O-3 (International Classification of Diseases for Oncology)](https://onco.cc/terms/icd-o-3/), [NCI Thesaurus (NCIt)](https://onco.cc/terms/ncit/)

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JSON: https://onco.cc/api/v1/entities/oncotree-term.json