1446PManagement of leptomeningeal metastases in EGFR mutated non-small cell lung cancer: Analysis of tyrosine kinase inhibitors sequence. (23rd October 2018) - Flippot, R; Auclin, E; Biondani, P; Le Rhun, E; Adam, J; Planchard, D; Caramella, C; Le Pechoux, C; Lacroix, L; Gazzah, A; Mezquita, L; Besse, B