9017 POSTER DISCUSSION Initial Detection of the Double Epidermal Growth Factor Receptor (EGFR) Mutation (L858R or Deletion in Exon 19 [del 19] Plus T790M) in Non-Small-Cell Lung Cancer (NSCLC) Patients (p) With Brain Metastases (mets) and the Influence of First-Line Chemotherapy on Outcome to Erlotinib | Publicación