title: Randomised comparison of weekly bolus 5-fluorouracil with or without leucovorin in metastatic colorectal carcinoma.
abstract: 148 patients with advanced untreated colorectal cancer were randomised to receive a weekly bolus of 5-fluorouracil (5-FU) 600 mg/m2 alone, with or without leucovorin (LV) 500 mg/m2. 5-FU plus LV produced a higher response rate than 5-FU alone: 23% (5 complete response, 11 partial response) vs. 8% (2 complete response, 4 partial response) (P = 0.03) out of 70 and 72 evaluable patients, respectively. Median survival was 11 months in both groups and median time to progression was not significantly different (P = 0.08). The combined regimen was more toxic than 5-FU alone, as evidenced by (a) a higher percentage of grade 3-4 diarrhoea, 19.5% vs. 8.5% (P = 0.045) and conjunctivitis, 26.5% vs. 5.6% (P = 0.0025); (b) the recording of one toxic death in the combined arm; and (c) the reduction of the median dose intensity of 5-FU actually delivered during the first 2 months of treatment. We conclude that 5-FU plus LV at a price of a higher toxicity is more active than 5-FU alone without improving survival and progression-free survival.
authors.affiliation: Division of Medical Oncology, Istituto Nazionale per la Ricerca sul Cancro, Genova, Italy.
authors.forename: M T
authors.initials: MT
authors.lastname: Nobile
authors.forename: R
authors.initials: R
authors.lastname: Rosso
authors.forename: M R
authors.initials: MR
authors.lastname: Sertoli
authors.forename: A
authors.initials: A
authors.lastname: Rubagotti
authors.forename: M G
authors.initials: MG
authors.lastname: Vidili
authors.forename: A
authors.initials: A
authors.lastname: Guglielmi
authors.forename: M
authors.initials: M
authors.lastname: Venturini
authors.forename: L
authors.initials: L
authors.lastname: Canobbio
authors.forename: T
authors.initials: T
authors.lastname: Fassio
authors.forename: L
authors.initials: L
authors.lastname: Gallo
mesh_terms: D000328:Adult; D000368:Aged; D015179:Colorectal Neoplasms / Q000188:drug therapy* / Q000401:mortality; D003231:Conjunctivitis / Q000139:chemically induced; D003967:Diarrhea / Q000139:chemically induced; D004334:Drug Administration Schedule; D005260:Female; D005472:Fluorouracil / Q000008:administration & dosage* / Q000009:adverse effects; D006801:Humans; D002955:Leucovorin / Q000008:administration & dosage* / Q000009:adverse effects; D008297:Male; D008875:Middle Aged; D013280:Stomatitis / Q000139:chemically induced
chemical_list: D002955:Leucovorin; D005472:Fluorouracil