Clinico-biological Data Collection Study of Metastatic Breast Cancer

RATIONALE : Currently, the mechanisms associated with the response or resistance to treatment are poorly understood and are multifactorial. These mechanisms involve clinical and biological factors associated with the host and the tumor and possibly the patient's psycho-social environment. PURPOSE : This trial will assess the use of a prospective database dedicated to patients with breast cancers that contains clinical data as well as epidemiological, psychological, emotional, social, imaging, biological and bio-pathological data. These data will allow a creation of new modelling algorithms in order to predict response and resistance to treatment.