An Observational Study to Evaluate AZD9291 Treatment in Patients With T790M Positive Non-small Cell Lung Cancer

AZD9291 Early Access Program (EAP) was available in Taiwan during October 2015 to September 2016, a time period before the approval of AZD9291, to supply the unlicensed AZD9291 for the NSCLC patients who received at least one prior EGFR TKI therapy. At the end of September 2016, more than 450 patients have been under AZD9291 treatment through the EAP. This observational study aims to evaluate the clinical benefit of AZD9291 treatment for these patients who were in the EAP