title: Randomized trial comparing monthly low-dose leucovorin and fluorouracil bolus with weekly high-dose 48-hour continuous-infusion fluorouracil for advanced colorectal cancer: a Spanish Cooperative Group for Gastrointestinal Tumor Therapy (TTD) study.
abstract: OBJECTIVE
  The objective of this multicenter study was to compare the efficacy and toxicity profiles of a combination of 5-fluorouracil (5-FU) given by bolus injection together with intravenous leucovorin (LV) versus high-dose 5-FU in continuous infusion (CI) in the treatment of advanced colorectal cancer.
  
  
  METHODS
  A total of 306 patients were randomized to receive either 5-FU 425 mg/m2 given by bolus injection on days 1-5 plus intravenous (i.v.) LV 20 mg/m2 every four to five weeks or 5-FU 3.5 g/m2/week in a 48-hour CI. Therapy was continued until disease progression. Second-line chemotherapy was allowed in both arms.
  
  
  RESULTS
  The response rates in 306 patients with measurable lesions were 19.2% (modulated arm) and 30.3% (CI arm, P < 0.05). The median progression-free survival times were 23.5 weeks (modulated arm) and 25 weeks (CI arm, P = NS). Median survival times were 42.5 weeks (modulated arm) and 48 weeks (CI arm, P = NS). There were no significant differences in grade 3-4 toxicity profiles but if we consider all grades we observed more mucositis in the modulated arm and more hand-foot syndrome in the CI arm.
  
  
  CONCLUSIONS
  In terms of response rate, the continuous infusion regimen was more effective than the modulated regimen. There was no significant difference in survival and time to progression, and none in grade 3-4 toxicity.
authors.affiliation: Hospital Clinico Provincial, Córdoba, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Aranda
authors.forename: E
authors.initials: E
authors.lastname: Díaz-Rubio
authors.forename: A
authors.initials: A
authors.lastname: Cervantes
authors.forename: A
authors.initials: A
authors.lastname: Antón-Torres
authors.forename: A
authors.initials: A
authors.lastname: Carrato
authors.forename: T
authors.initials: T
authors.lastname: Massutí
authors.forename: J M
authors.initials: JM
authors.lastname: Tabernero
authors.forename: J
authors.initials: J
authors.lastname: Sastre
authors.forename: A
authors.initials: A
authors.lastname: Trés
authors.forename: J
authors.initials: J
authors.lastname: Aparicio
authors.forename: J M
authors.initials: JM
authors.lastname: López-Vega
authors.forename: I
authors.initials: I
authors.lastname: Barneto
authors.forename: J
authors.initials: J
authors.lastname: García-Conde
mesh_terms: D000328:Adult; D000368:Aged; D000964:Antimetabolites, Antineoplastic / Q000008:administration & dosage* / Q000627:therapeutic use; D015179:Colorectal Neoplasms / Q000188:drug therapy*; D004334:Drug Administration Schedule; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage* / Q000627:therapeutic use; D006801:Humans; D007262:Infusions, Intravenous; D007275:Injections, Intravenous; D002955:Leucovorin / Q000008:administration & dosage*; D008297:Male; D008875:Middle Aged; D016019:Survival Analysis
chemical_list: D000964:Antimetabolites, Antineoplastic; D002955:Leucovorin; D005472:Fluorouracil