A Randomized, Open-Label, Multicenter Phase III Study Comparing the Efficacy and Safety of a Combination of Intravenous DX-8951f (Exatecan Mesylate) Plus Gemcitabine to Gemcitabine Alone in Patients With Locally Advanced or Metastatic Cancer of the Exocrine Pancreas Who Have Not Received Prior Chemotherapy

OBJECTIVES:

• Compare the overall survival of patients with chemotherapy-naive locally advanced or metastatic cancer of the exocrine pancreas treated with exatecan mesylate and gemcitabine versus gemcitabine alone.
• Compare the measures of clinical benefit in patients treated with these regimens.
• Compare the anti-tumor efficacy of these regimens in this patient population.
• Determine the safety profile of exatecan mesylate and gemcitabine in these patients.

OUTLINE: This is a randomized, open-label, multicenter study. Patients are stratified according to performance status (60% vs 70-80% vs 90-100%), extent of disease (locally advanced vs metastatic), and prior radiotherapy for pancreatic cancer (yes or no). Patients are randomized to one of two treatment arms.

• Arm I: Patients receive exatecan mesylate (DX-8951f) IV over 30 minutes immediately followed by gemcitabine IV over 30 minutes on days 1 and 8. Treatment repeats every 3 weeks in the absence of disease progression or unacceptable toxicity.
• Arm II: Patients receive gemcitabine IV over 30 minutes once weekly for up to 7 weeks followed by one week of rest (course 1). For all subsequent courses, patients receive gemcitabine once weekly for 3 weeks followed by one week of rest. Treatment repeats every 4 weeks in the absence of disease progression or unacceptable toxicity.

Patients are followed monthly.