The Effectiveness Of Atezolizumab In Patients With Locally-Advanced Or Metastatic Non-Small Cell Lung Cancer After Prior Chemotherapy

Inclusion Criteria: * Diagnosis of locally advanced or metastatic NSCLC (histologically or cytologically confirmed stage IIIB/stage IV) and prior chemotherapy * Decision to be treated with Atezolizumab according to Summary of Product Characteristics (SmPC) by treating physician, independent of this non-interventional study * No contraindication to treatment with Atezolizumab Retrospective Inclusion: * Participants may be included retrospectively. Retrospective inclusion and documentation is limited to up to 9 weeks after initial start of therapy with Atezolizumab (corresponding to a maximum of 3 treatment cycles with drug administrations at 3-week intervals), corresponding to a maximum of 9 weeks prior to date of informed consent. Quality of life for this population will be captured and assessed retrospectively with a modified questionnaire for the period immediately prior to treatment start until study inclusion. participants who started Atezolizumab therapy more than 9 weeks prior to ICF being obtained may not be included in the study. * Participants who give consent to be retrospectively enrolled but have already discontinued Atezolizumab for reasons such as loss of clinical benefit or toxicity may also take part in the study, given their first administration of Atezolizumab is within 9 weeks of consenting to take part, and they meet all other eligibility criteria. Exclusion Criteria: Patients not eligible for Atezolizumab treatment according to SmPC