A Study of Atezolizumab With or Without Bevacizumab in Combination With Cisplatin Plus Gemcitabine in Patients With Untreated, Advanced Biliary Tract Cancer
Conditions
Interventions
- DRUG: Atezolizumab
- DRUG: Bevacizumab
- OTHER: Placebo
- DRUG: Cisplatin
- DRUG: Gemcitabine
Sponsor
Hoffmann-La Roche