Osimertinib Recruiting Phase 1 Trials for Metastatic Lung Non-Squamous Non-Small Cell Carcinoma / Stage IIIb Non-small Cell Lung Cancer / Advanced Lung Non-Squamous Non-Small Cell Carcinoma / Stage IV Non-Small Cell Lung Cancer / Stage IIIA Non-Small Cell Lung Cancer / Stage III Non-Small Cell Lung Cancer AJCC v7 / EGFR NP_005219.2:p.T790M / EGFR Exon 19 Deletion Mutation / Stage IIIB Non-Small Cell Lung Cancer AJCC v7 / EGFR NP_005219.2:p.L858R / Stage IIIA Non-Small Cell Lung Cancer AJCC v7 / EGFR NP_005219.2:p.G719X / Stage IIIB Lung Non-Small Cell Cancer AJCC v7 / Stage IV Non-Small Cell Lung Cancer AJCC v7 / Stage III Non-Small Cell Lung Cancer / EGFR NP_005219.2:p.L861Q / Recurrent Non-Small Cell Lung Carcinoma / EGFR Activating Mutation Treatment