Overview Phase II Study of Gemcitabine Versus S-1 Adjuvant Therapy After Hemihepatectomy for Biliary Tract Cancer Status: Completed Trial end date: 2017-12-01 Target enrollment: Participant gender: Summary To compare efficacy and safety of Gemcitabine versus S-1 adjuvant therapy after hemihepatectomy. Phase: Phase 2 Details Lead Sponsor: Kansai Hepatobiliary Oncology GroupTreatments: Gemcitabine