Overall Survival of Patients With -Positive Metastatic Non-Small-Cell Lung Cancer in the Russian Federation: Nationwide Cohort Study.

Purpose: The overall survival (OS) results in patients with -positive metastatic non-small-cell lung cancer (NSCLC) have rarely been reported. The aim of this prospective-retrospective cohort study was to obtain real-world data on the use of crizotinib or chemotherapy in patients with -positive metastatic NSCLC in Russia.

Patients And Methods: Patients with epidermal growth factor receptor-negative metastatic NSCLC were screened in 23 cancer centers.