A retrospective, non-interventional, multicenter, observational chart review study to explore the clinical benefits of retreatment with TKI in the real world. - SEQUENCE

This is a retrospective, non-interventional, multicenter, observational chart review study to explore the clinical benefits of retreatment with TKI in the real world.

This study is designed to retrospectively review the medical and chemotherapy records of 300 patients with EGFR mutation positive adenocarcinoma NSCLC. Eligible patients are as follows: histologically or cytologically confirmed NSCLC, undergone EGFR-TKI retreatment sometime after the failure of the initial EGFR-TKI. After initial treatment, patients had been treated with chemotherapy and subsequently re-treated with EGFR-TKI will be identified. The target population will be derived from multicentre in Taiwan. The study aim is to evaluate clinical effect in re-administration of EGFR-TKI using retrospectively collected data from these eligible patients to provide valuable information.