Combination Chemotherapy With or Without Cetuximab Before and After Surgery in Treating Patients With Resectable Liver Metastases Caused By Colorectal Cancer

OBJECTIVES:

Primary

• Compare progression-free survival of patients with resectable colorectal liver metastases treated with neoadjuvant and adjuvant combination chemotherapy with vs without cetuximab.

Secondary

• Compare the overall survival of patients treated with these regimens.
• Compare the quality of life of patients treated with these regimens.
• Compare the cost effectiveness of these regimens in these patients.

OUTLINE: This is a prospective, randomized, multicenter, open-label study. Patients are stratified according to participating center and assigned chemotherapy regimen. Patients are randomized to 1 of 2 treatment arms.

• Neoadjuvant therapy:

  • Arm I: Patients receive 1 of the following chemotherapy regimens:

    • OxMdG: Patients receive leucovorin calcium IV over 2 hours and oxaliplatin IV over 2 hours on day 1. Patients also receive fluorouracil IV continuously over 46 hours beginning on day 1. Treatment repeats every 2 weeks for up to 6 courses in the absence of disease progression or unacceptable toxicity.
    • CAPOX: Patients receive oxaliplatin IV over 2 hours on day 1 and oral capecitabine twice daily on days 1-14. Treatment repeats every 3 weeks for up to 4 courses in the absence of disease progression or unacceptable toxicity.

  • Arm II: Patients receive 1 of the following regimens:

    • OxMdG + cetuximab: Patients receive cetuximab IV over 1-2 hours on day 1 and OxMdG chemotherapy as in arm I. Treatment repeats every 2 weeks for up to 6 courses in the absence of disease progression or unacceptable toxicity.
    • CAPOX + cetuximab: Patients receive cetuximab IV over 1-2 hours on days 1, 8, and 15 and CAPOX chemotherapy as in arm I. Treatment repeats every 3 weeks for up to 4 courses in the absence of disease progression or unacceptable toxicity.
• Surgery: Beginning 2-6 weeks after completion of chemotherapy, patients in both arms undergo liver resection.

• Adjuvant therapy: Beginning 4-8 weeks after completion of surgery, patients receive treatment (OxMdG or CAPOX with or without cetuximab) as in arm I or II of neoadjuvant therapy.

  • Arm I: Treatment with OxMdG repeats every 2 weeks for up to 6 courses and treatment with CAPOX repeats every 3 weeks for up to 4 courses in the absence of disease progression or unacceptable toxicity.
  • Arm II: Treatment with OxMdG + cetuximab repeats every 2 weeks for up to 6 courses and treatment with CAPOX + cetuximab repeats every 3 weeks for up to 4 courses in the absence of disease progression or unacceptable toxicity.

Quality of life is assessed at baseline, every 12 weeks during chemotherapy, at completion of study treatment, every 3 months for 1 year, and then every 6 months thereafter.

Cost per life year and per quality-adjusted life year is assessed at baseline, every 12 weeks during treatment, and then at 3, 5, and 10 years.

After completion of study treatment, patients are followed every 3 months for 2 years and then every 6 months for 3 years.

Peer Reviewed and Funded or Endorsed by Cancer Research UK