The purpose of this study is to evaluate the efficacy and safety of atezolizumab in combination with tiragolumab compared with durvalumab in participants with locally advanced, unresectable Stage III non-small cell lung cancer (NSCLC) who have received at least two cycles of concurrent platinum-based chemoradiotherapy (CRT) and have not had radiographic disease progression.
Atezolizumab 1680 mg every 4 weeks (Q4W) will be administered IV on Day 1 of each 28-day cycle.
Tiragolumab 840 mg Q4W will be administered IV on Day 1 of each 28-day cycle.
Durvalumab will be administered based on weight at 10 mg/kg IV every 2 weeks (Q2W) on Days 1 and 15 of each 28-day cycle, or will be administered at a fixed dose of 1500 mg IV every 4 weeks (Q4W) (for participants whose weight \>/= 30 kg) on Day 1 of each 28-day cycle.
Buenos Aires, Argentina
Ciudad Autonoma Buenos Aires, Argentina
Córdoba, Argentina
Rosario, Argentina