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 and suggest these to the Editorial Board of the WHO Blue Books programme.
- To identify gaps in knowledge that may require research.
- To link WHO Blue Books 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.