• The organisation shall be registered as a non-profit organisation in one of the EU Member States.
• The main object of the organisation shall be the advocacy, support and care of cancer patients and their carers. Cancer-specific organisations (eg. lung, leukaemia etc.) shall be considered for membership if they can demonstrate a clear patient focus (advocacy, support and care) to their activities and patient involvement in the organisation’s activities.
• The majority of those involved in the organisation's management, directly or indirectly, must be cancer patients.
• The organisation shall be willing to co-operate with other organisations having the same objectives.
• The organisation shall be independent of governments, political parties and commercial organisations.
• The organisation must support and demonstrate a commitment to ECPC's vision and mission.

Cancer organisations that do not fulfil the above criteria may apply to become an Associate Member or partner of ECPC. For that, they need to be a cancer-related and patient-oriented organisation, be non-profit and support and demonstrate a commitment to ECPC's vision and mission.