A Phase I/II Trial of CPT-11 With Carboplatin in Patients With Glioblastoma Multiforme Prior to Radiation Therapy

OBJECTIVES:

• Determine the maximum tolerated dose (MTD) of carboplatin and irinotecan in patients with glioblastoma multiforme. (Phase I closed to accrual as of 6/24/02)
• Determine the toxic effects of this regimen in these patients.
• Determine the objective response in patients treated with the established MTD of this regimen.
• Determine time to tumor progression and survival of patients treated with this regimen.

OUTLINE: This is a dose-escalation study. Patients in the phase II portion of the study are stratified according to age (under 60 vs 60 and over), ECOG performance status (0-1 vs 2), and extent of resection (total vs subtotal). (Phase I closed to accrual as of 6/24/02)

Within 4 weeks of surgery, patients receive carboplatin IV over 30 minutes followed by irinotecan IV over 90 minutes on day 1. Treatment repeats every 4 weeks for a maximum of 6 courses in the absence of disease progression or unacceptable toxicity.

Cohorts of 3-6 patients receive escalating doses of carboplatin and irinotecan until the maximum tolerated dose (MTD) is determined. The MTD is defined as the dose preceding that at which 2 of 3 or 2 of 6 patients experience dose-limiting toxicity. Once the MTD is determined, additional patients are accrued to receive carboplatin and irinotecan at the recommended phase II dose. (Phase I closed to accrual as of 6/24/02)