Prospective Epidemiological Study of Metastatic Non Small Cell Lung Cancer (NSCLC) in Latin America

Inclusion Criteria: 1. Patients aged 18 years or older; 2. Newly diagnosed Non-Small Cell Lung Cancer (NSCLC) during the period of the study (which includes 3 months prior to site activation by LACOG, although they can have received anti-cancer treatment during that time); 3. Histologically or cytologically confirmed advanced NSCLC: 1. Stage IIIB that progressed after curative therapy (chemoradiation and/or surgery); 2. Stage IV metastatic disease (de novo or distant relapse) 4. Any NSCLC histological subtype and molecular mutation; 5. Any Eastern Cooperative Oncology Group (ECOG) Performance Status (0 to 4) at diagnosis; 6. Patients assigned by treating physician to any therapy (i.e. chemotherapy, targeted agents, immunotherapy) or palliative care; 7. Access to patient medical chart for data collection; 8. Willing and able to provide written informed consent and privacy authorization for the release of personal health information.