S9415 Chemotherapy in Patients With Stage II or III Colon Cancer That Has Been Surgically Removed

Colorectal Cancer Clinical Trial

Official title: Phase III Randomized Trial of 5-FU/Leucovorin/Levamisole Versus 5-FU Continuous Infusion/Levamisole as Adjuvant Therapy for High-Risk Resectable Colon Cancer

Status Completed

Clinical Trial Summary

RATIONALE: Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining more than one drug and giving drugs in different ways may kill more cancer cells.

PURPOSE: Randomized phase III trial to compare the effectiveness of chemotherapy given in different ways in treating patients with surgically removed stage II or stage III colon cancer at high risk of recurrence.

Clinical Trial Description

OBJECTIVES: I. Compare overall and disease free survival in patients with completely resected stage II or III colon cancer randomized to adjuvant chemotherapy with bolus fluorouracil and leucovorin calcium with levamisole vs continuous infusion fluorouracil with levamisole.

OUTLINE: This is a randomized, multicenter study. Patients are stratified according to center, T stage (T1 vs T2 vs T3 vs T4a), N stage (N0 vs N1 vs N2-3), and time from surgery until registration (21-28 vs 29-35 days). Patients are randomized to one of two treatment arms. Arm I: Patients receive leucovorin calcium IV immediately followed by fluorouracil IV on days 1 through 5 of weeks 1, 5, 9, 14, 19, and 24, and oral levamisole 3 times a day for 3 days on days 1-3. Courses repeat every 2 weeks for 6 months. Arm II: Patients receive levamisole as in arm I plus fluorouracil by continuous IV infusion for 8 weeks. Treatment with fluorouracil repeats every 10 weeks for 3 courses. Treatment continues in the absence of disease progression or unacceptable toxicity. Patients are followed at 9 months and 12 months, then every 6 months for 4 years, and then annually thereafter.

PROJECTED ACCRUAL: A total of 1,500 patients will be accrued for the study over approximately 5.5 years. ;

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

• Colorectal Cancer

• NCT number: NCT00002593
• Study type: Interventional
• Source: Southwest Oncology Group
• Status: Completed
• Phase: Phase 3
• Start date: December 1994
• Completion date: March 2005