title: Phase II trial of S-1 in combination with oxaliplatin in previously untreated patients with recurrent or inoperable biliary tract cancer.
abstract: BACKGROUND
  Biliary tract cancers are among the most aggressive tumors with a poor prognosis. We conducted a phase II study on combination chemotherapy consisting of S-1 and oxaliplatin in previously untreated patients.
  
  
  METHODS
  Patients were treated with S-1 40 mg/m(2) twice daily, administered orally on days 1-28, and 85 mg/m(2) of oxaliplatin, administered via an intravenous 90-min infusion on days 1, 15 and 29. Treatments were repeated every 6 weeks.
  
  
  RESULTS
  15 patients were enrolled: 9 patients (60%) had intrahepatic and 3 (20%) had extrahepatic cholangiocarcinoma, 2 (13.3%) had cancer of the ampulla of Vater and 1 patient had gall bladder cancer. Partial response was observed in 1 of the 15 (6.7%) patients. Stable disease was observed in 4 patients (26.7%). The median time to progression was 1.4 months (95% confidence interval, CI, 0.9-1.9), and the median overall survival was 3.1 months (95% CI, 0.0-7.0). Grade 3 hematologic toxicities included neutropenia (1, 6.7%) and thrombocytopenia (1, 6.7%). As the response rate in stage I did not justify progression to stage II (> or =2/15), this study had to be discontinued in accordance with the established protocols.
  
  
  CONCLUSIONS
  The combination chemotherapy with S-1 and oxaliplatin utilized in this study resulted in no promising antitumor activity.
authors.affiliation: Department of Internal Medicine, Dong-A University College of Medicine, Busan, Korea.
authors.forename: Sung Yong
authors.initials: SY
authors.lastname: Oh
authors.forename: Gyeong-Won
authors.initials: GW
authors.lastname: Lee
authors.forename: Hoon Gu
authors.initials: HG
authors.lastname: Kim
authors.forename: Tae Hyo
authors.initials: TH
authors.lastname: Kim
authors.forename: Hyun Jin
authors.initials: HJ
authors.lastname: Kim
authors.forename: Jung Hun
authors.initials: JH
authors.lastname: Kang
mesh_terms: D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects / Q000627:therapeutic use*; D001661:Biliary Tract Neoplasms / Q000188:drug therapy* / Q000473:pathology*; D018450:Disease Progression; D004338:Drug Combinations; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009944:Organoplatinum Compounds / Q000009:adverse effects / Q000627:therapeutic use*; D000077150:Oxaliplatin; D010094:Oxonic Acid / Q000009:adverse effects / Q000627:therapeutic use*; D012008:Recurrence; D005641:Tegafur / Q000009:adverse effects / Q000627:therapeutic use*
chemical_list: D004338:Drug Combinations; D009944:Organoplatinum Compounds; D000077150:Oxaliplatin; C079198:S 1 (combination); D005641:Tegafur; D010094:Oxonic Acid