In Pays de Loire region, as a model, the regional public health policy in oncology is declinated through a new so-called regional oncology expertise network which coordinate three expertise networks: general oncology, oncopediatrics, and notably oncogeratrics network. This new integrated approach of network coordination remains on a specific contract of objectives and means elaborated by the French regional health agency, which opens new fields for experimentation in order to improve a better quality of care and reduce disparity in healthcare system.