This is a Phase III/IV, single-arm, multicenter study of the long-term safety and efficacy of atezolizumab treatment in participants with Stage IIIb or Stage IV NSCLC who have progressed after standard systemic chemotherapy (including if given in combination with anti-programmed cell death protein 1 \[anti-PD-1\] therapy, after anti-PD-1 as monotherapy, or after tyrosine kinase inhibitor \[TKI\] therapy). The study will consist of a Screening Period, a Treatment Period, a Treatment Discontinuation Visit, and a Follow-Up Period.
Participants will receive 1200 milligrams (mg) of atezolizumab administered by intravenous infusion on Day 1 of every 3-week cycle until Investigator-assessed loss of clinical benefit, unacceptable toxicity, investigator or participant's decision to withdraw from therapy, or death (whichever occurs first).
Caba, Argentina
La Rioja, Argentina