A Study to Investigate the Safety and Efficacy of Atezolizumab in Previously-Treated Patients With Locally Advanced or Metastatic Non-Small Cell Lung Cancer

This is a phase III, single-arm, multicenter study of the long-term safety and efficacy of atezolizumab treatment in patients with Stage IIIb or Stage IV non-small cell lung cancer (NSCLC) who have progressed following standard systemic chemotherapy (including if given in combination with anti-PD-1 therapy or after anti-PD-1 as monotherapy).