Patient Journey With Advanced Lung Cancer Positive for ALK Fusion in Brazil

Inclusion Criteria: * Patients older than 18 years; * Newly diagnosed advanced stage IIIB-IV NSCLC (AJCC 8th edition) or locally advance/distant relapse in the period of January 2015 to December 2020. * NSCLC with pathological confirmation of ALK rearrangement by immunohistochemistry, fluorescent in situ hybridization (FISH) or next generation sequencing (NGS); * ECOG 0-4; * Patients with CNS metastases are also considered eligible, regardless of the initial treatment instituted. Exclusion Criteria: \- Incomplete medical chart in terms of date of diagnosis, ALK test results and outcomes