A Study of Atezolizumab With or Without Tiragolumab in Participants With Unresectable Esophageal Squamous Cell Carcinoma Whose Cancers Have Not Progressed Following Definitive Concurrent Chemoradiotherapy
ACTIVE_NOT_RECRUITING
Status
Conditions
- Esophageal Squamous Cell Carcinoma
Interventions
- DRUG: Tiragolumab
- DRUG: Atezolizumab
- DRUG: Tiragolumab Matching Placebo
- DRUG: Atezolizumab Matching Placebo
Sponsor
Hoffmann-La Roche