A randomized phase II trial of irinotecan in combination with infusional or two different bolus 5-fluorouracil and folinic and regimens as first-line therapy for advanced colorectal cancer

Kamel Bouzid, S. Khalfallah, J. Tujakowski, B. Piko, G. Purkalne, S. Plate, P. Padrik, M. Serafy, E. M. Pshevloutsky, B. Boussard, P. P. Bapsy, S. Ben Ahmed, T. Salek, S. Doneo, D. A. Gerges, D. C. Doval, E. Buyukunal, I. N. Chernozemsky, V. I. Tzekova, H. A. El-AzimH. Errihani, R. Samlali, J. S. Godz, N. Ghilezan, B. A. Berdov, G. N. Tchaikovsky, M. Wagnerova, N. F. Aykan, J. Zidan, G. Chachine

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Background: Three different therapeutic regimens of irinotecan (CPT-11) in combination with 5-fluorouracil (5-FU) and folinic acid (FA) were evaluated for efficacy and safety in the first-line therapy of advanced colorectal cancer. Patients and methods: Patients were randomly assigned to receive intravenously either: CPT-11 125 mg/m2, FA 20 mg/m2 followed by 5-FU 500 mg/m2 bolus, weekly for 4 weeks (arm A, Saltz regimen); or CPT-11 180 mg/m2 day 1 then FA 200 mg/m2 over 2 h and 5-FU 400 mg/m2 bolus and 5-FU 600 mg/m2 22-h infusion on days 1 and 2, every 2 weeks (arm B, Douillard regimen); or CPT-11 350 mg/m2 (days 1 and 43) alternating with FA 20 mg/m2/day followed by 5-FU bolus 425 mg/m2/day during 5 days (days 22-26) (arm C, Mayo Clinic regimen). Results: A total of 154 patients were included in the study (arm A, 51 patients; arm B, 53; arm C, 50). Overall response rates for the intention-to-treat populations were 33% [95% confidence interval (CI) 21% to 48%], 42% (95% CI 28% to 56%) and 30% (95% CI 18% to 45%) for arms A, B and C, respectively. Median times to progression were 6, 8 and 7 months for arms A, B and C, respectively. Median survival times were 15, 12 and 17 months for arms A, B and C, respectively. Overall response rates for the evaluable patient populations were 40% (95% CI 24% to 58%) in arm A, 44% (95% CI 29% to 60%) in arm B and 31% (95% CI 17% to 47%) in arm C. Neutropenia was the main serious adverse event in arms A (30% of patients) and C (22% of patients) but occurred in only 8% of patients in arm B. Delayed diarrhea was the main severe adverse event for the three regimens, from 15% to 22%. Conclusion: All three regimens were highly active. The biweekly combination of CPT-11 and 5-FU/FA (arm B) was notable for its low incidence of grade 3/4 neutropenia. The incidence of grade 3/4 delayed diarrhea was equivalent for the three treatment arms.

Original languageEnglish
Pages (from-to)1106-1114
Number of pages9
JournalAnnals of Oncology
Volume14
Issue number7
DOIs
StatePublished - 1 Jul 2003

Keywords

  • 5-fluorouracil/folinic acid
  • Colorectal cancer
  • First-line
  • Irinotecan

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