The scientific work of IARC is organized into research Sections, which themselves are composed of one or more research Groups. The Sections focus on particular areas of cancer research, while often collaborating closely on issues of common interest.
As a WHO Agency, IARC follows the general governing rules of the UN family. It is governed by its own Governing bodies, however, the IARC Governing Council (GC) and the IARC Scientific Council (SC).
Today, IARC's membership has grown to 26 countries (founding States plus Australia, Austria, Belgium, Brazil, Canada, Denmark, Finland, Hungary, India, Iran, Ireland, Japan, Morocco, Norway, the Netherlands, Qatar, Republic of Korea, Russian Federation, Spain, Sweden, and Switzerland).