 A direct assessment of the needs perceived unmet by patients could allow to assess the magnitude of expectations to better target treatments as example. A prospective assessment of the expectations and needs of the patients is thus essential. This would also allow help to highlight the convergence between supportive care proposed and used and those expected by patients. The first step to understanding how to optimize the use of resources and to improve the quality of care is to identify patients expectations. Moreover, it is now well recognized that patients should play a key role in the research and that their active participation in research can increase the relevance of the research. 