Rilvegostomig + Chemotherapy as Adjuvant Therapy for Biliary Tract Cancer After Resection (ARTEMIDE-Biliary01)

This is a Phase III, randomized, double-blind, placebo-controlled, multicenter, global study to assess the efficacy and tolerability of rilvegostomig compared to placebo in combination with investigator's choice of chemotherapy (capecitabine, S-1(tegafur/ gimeracil/ oteracil) or gemcitabine/cisplatin) as adjuvant treatment in participants with BTC after resection with curative intent. This study will be conducted in patients with BTC who are at risk of recurrence after resection with curative intent.