Pilot Phase II Study of Safety and Immunogenicity of an ALVAC-CEA/B7.1 Vaccine Administered With Chemotherapy, Alone or in Combination With Tetanus Toxoid, as Compared to Chemotherapy Alone, in Patients With Metastatic Colorectal Adenocarcinoma

Brief Summary

Detailed Description

OBJECTIVES: * Determine the safety of ALVAC-CEA-B7.1 vaccine and chemotherapy, with or without tetanus toxoid, vs chemotherapy alone in patients with metastatic colorectal adenocarcinoma. * Determine whether tetanus toxoid enhances the immune response in patients treated with the vaccine and chemotherapy. OUTLINE: This is a randomized, open-label, multicenter study. Patients are randomized to 1 of 3 treatment arms. * Arm I: Patients receive a priming dose of tetanus toxoid. Beginning 2 weeks later, patients receive tetanus toxoid and ALVAC-CEA-B7.1 vaccine subcutaneously (SC) once weekly for 3 weeks. Two weeks after the third vaccine administration, patients receive tetanus toxoid and ALVAC-CEA-B7.1 vaccine SC on day 1 and irinotecan IV over 90 minutes, leucovorin calcium IV, and fluorouracil IV on days 1, 8, 15, and 22. Treatment repeats every 6 weeks for 4 courses in the absence of disease progression or unacceptable toxicity. * Arm II: Patients receive ALVAC-CEA-B7.1 vaccine and chemotherapy as in arm I. * Arm III: Patients receive chemotherapy as in arm I. After completion of chemotherapy, patients with partial or complete response may receive ALVAC-CEA-B7.1 vaccine SC once weekly on weeks 1-3 and 6. PROJECTED ACCRUAL: A total of 90 patients (30 per treatment arm) will be accrued for this study.

Primary Outcomes

Not specified