Ph I Zactima + Imatinib Mesylate & Hydroxyurea for Pts w Recurrent Malignant Glioma

"Pts will start treatment on day 1 of cycle 1 w Zactima, imatinib mesylate \& hydroxyurea. All 3 agents administered in continuous daily, oral manner. Imatinib mesylate dose 400 mg/day for pts not on EIAEDs \& 1000 mg/day for pts on EIAEDs based on previous studies demonstrating that pts on EIAEDs require significantly higher doses of imatinib mesylate \& that such doses are safe \& well tolerated. Dose of hydroxyurea 500 mg twice day. Dose level of Zactima will be increased in successive cohorts of pts as described below.~Cohorts of 3-6 pts will accrue at each dose level until MTD is defined. Each cohort will consist of a mini of 3 newly enrolled pts. Intra-patient dose escalation is not permitted. Cohorts may be expanded at any dose level for further elaboration of safety \& pharmacokinetic parameters as required.~Treatment cycle is defined as daily administration of Zactima + imatinib mesylate \& hydroxyurea for 28 days for purpose of scheduling evaluations."