An open, single-arm, single-centre clinical study evaluating Cadonilimab Injection in combination with Regorafenib for the treatment of biliary systemic tumours that have failed at least one prior systemic therapy
To evaluate the efficacy and safety of Cadonilimab Injection in combination with Regorafenib in the treatment of intermediate to advanced biliary systemic tumours that has failed at least one prior systemic therapy