Oxaliplatin combined with weekly bolus fluorouracil and leucovorin as surgical adjuvant chemotherapy for stage II and III colon cancer: results from NSABP C-07.

This phase III clinical trial evaluated the impact on disease-free survival (DFS) of adding oxaliplatin to bolus weekly fluorouracil (FU) combined with leucovorin as surgical adjuvant therapy for stage II and III colon cancer.
Patients who had undergone a potentially curative resection were randomly assigned to either FU 500 mg/m2 intravenous (IV) bolus weekly for 6 weeks plus leucovorin 500 mg/m2 IV weekly for 6 weeks during each 8-week cycle for three cycles (FULV), or the same FULV regimen with oxaliplatin 85 mg/m2 IV administered on weeks 1, 3, and 5 of each 8-week cycle for three cycles (FLOX).
A total of 2,407 patients (96.6%) of the 2,492 patients randomly assigned were eligible. Median follow-up for patients still alive is 42.5 months. The hazard ratio (FLOX v FULV) is 0.80 (95% CI, 0.69 to 0.93), a 20% risk reduction in favor of FLOX (P < .004). The 3- and 4-year disease-free survival (DFS) rates were 71.8% and 67.0% for FULV and 76.1% and 73.2% for FLOX, respectively. Grade 3 neurosensory toxicity was noted in 8.2% of patients receiving FLOX and in 0.7% of those receiving FULV (P < .001). Hospitalization for diarrhea associated with bowel wall thickening occurred in 5.5% of the patients receiving FLOX and in 3.0% of the patients receiving FULV (P < .01). A total of 1.2% of patients died as a result of any cause within 60 days of receiving chemotherapy, with no significant difference between regimens.
The addition of oxaliplatin to weekly FULV significantly improved DFS in patients with stage II and III colon cancer. FLOX can be recommended as an effective option in clinical practice.
AuthorsJ Philip Kuebler, H Samuel Wieand, Michael J O'Connell, Roy E Smith, Linda H Colangelo, Greg Yothers, Nicholas J Petrelli, Michael P Findlay, Thomas E Seay, James N Atkins, John L Zapas, J Wendall Goodwin, Louis Fehrenbacher, Ramesh K Ramanathan, Barbara A Conley, Patrick J Flynn, Gamini Soori, Lauren K Colman, Edward A Levine, Keith S Lanier, Norman Wolmark
JournalJournal of clinical oncology : official journal of the American Society of Clinical Oncology (J Clin Oncol) Vol. 25 Issue 16 Pg. 2198-204 (Jun 1 2007) ISSN: 1527-7755 [Electronic] United States
PMID17470851 (Publication Type: Journal Article, Randomized Controlled Trial, Research Support, N.I.H., Extramural)
Chemical References
  • Organoplatinum Compounds
  • oxaliplatin
  • Leucovorin
  • Fluorouracil
  • Adult
  • Aged
  • Antineoplastic Combined Chemotherapy Protocols (therapeutic use)
  • Chemotherapy, Adjuvant
  • Colonic Neoplasms (drug therapy, mortality, pathology)
  • Female
  • Fluorouracil (administration & dosage, adverse effects)
  • Humans
  • Leucovorin (administration & dosage, adverse effects)
  • Male
  • Middle Aged
  • Neoplasm Staging
  • Organoplatinum Compounds (administration & dosage, adverse effects)

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