Efficacy and Safety Data of Osimertinib in Elderly Patients with NSCLC Who Harbor the EGFR T790M Mutation After Failure of Initial EGFR-TKI Treatment

Efficacy and Safety Data of Osimertinib in Elderly Patients with NSCLC Who Harbor the EGFR T790M Mutation After Failure of Initial EGFR-TKI Treatment