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Section of Evidence Synthesis and Classification

WHO Classification of Tumours Group


Cancer classification requires integration and evaluation of data from many sources. It needs to take account of geographical and germline genetic differences where these affect classification.

The WHO Classification of Tumours Group has the following aims:

  • To synthesize and evaluate published evidence for cancer classification against defined levels of evidence.
  • To integrate evidence for classification of cancer types and subtypes.
  • To suggest changes required in cancer classification to the Editorial Board of the WHO Classification of Tumours programme.
  • To identify gaps in knowledge that may require research.
  • To link WHO Classification of Tumours content to other classification systems for the staging and reporting of cancer – for example, the International Classification of Diseases (ICD), the International Collaboration on Cancer Reporting (ICCR), and the tumour–node–metastasis (TNM) system.


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