For these reasons and considering that LCINS is an increasing public health problem, IFCT (Intergroupe Francophone de Cancérologie Thoracique) states to promote the BioCAST study (IFCT-1002). It is a national, multicentric, prospective epidemiological study. Main objective is to describe the clinical and molecular epidemiology of LCINS in a French population composed by all cases newly diagnosed in participating centres (500 to 1500 patients expected). BioCAST include a clinical and a biological part. The clinical component is based on collecting data directly from the patient through a standardized questionnaire during a telephone interview with a health professional. The biologic component includes a blood sample collection. A large genomic wide association study and an epigenetic study (including micro RNA study) are also planned. Other objectives are looking for correlations between clinical factors and molecular abnormalities; and looking for new oncogene in this specific population.