To list in cases with unresectable, metastatic or locally advanced biliary tract or ampullary adenocarcinoma that have not been treated before,confirm the efficacy and safety of combined S-1/L-OHP regimen for the biliary tract or ampullary carcinoma, providing evidence-based proof for the future treatment.
To evaluate efficacy and safety of S-1 Oxaliplatin (SOX) regimen to patients with unresectable, metastatic or locally advanced biliary tract or ampullary adenocarcinoma.