Conditions: Glioblastoma Gliosarcoma
Keywords: adult grade I meningioma adult grade II meningioma adult grade III meningioma adult papillary meningioma adult anaplastic meningioma recurrent adult brain tumor glioblastoma multiforme (GBM) Imatinib Imatinib mesylate Hydroxyurea Droxia Hydrea Hydroxycarbamide Gleevec Meningioma
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 21
Healthy volunteers: no

Brief summary:
RATIONALE: Imatinib mesylate may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth. Drugs used in chemotherapy, such as hydroxyurea, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving imatinib mesylate together with hydroxyurea may kill more tumor cells.

PURPOSE: This phase II trial is studying how well giving imatinib mesylate together with hydroxyurea works in treating patients with recurrent or progressive meningioma.

Detailed description:
OBJECTIVES:

Primary

* Evaluate the activity of imatinib mesylate and hydroxyurea, as measured by 6-month progression-free survival, in patients with recurrent or progressive meningioma.

Secondary

* Evaluate the progression-free survival (PFS)
* Overall survival (OS),
* Objective response rate among patients treated with this regimen.

OUTLINE: This is an open-label study.

Patients receive oral imatinib mesylate once or twice daily and oral hydroxyurea twice daily on days 1-28. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.

PROJECTED ACCRUAL: A total of 21 patients will be accrued for this study.

Arms:
arm 1: All patients receive imatinib mesylate and hydroxyurea orally on a daily, continuous basis. Dosing of imatinib mesylate is adjusted for patients who are also receiving p450-inducing anti-epileptic drugs.

Interventions: intervention 1: hydroxyurea intervention 2: imatinib mesylate
Intervention descriptions: intervention 1: Hydroxyurea is administered orally twice a day. The dose will be set at 500 mg twice a day for all patients. If vomiting occurs not additional trial medication should be taken that day in an effort to replace the material that has been vomited. It is recommended that patients take their prescribed hydroxyurea at the same time that they take their prescribed imatinib mesylate, however, a 30-60 minute interval between agents is acceptable, if required for practical or other compliance issues. intervention 2: Imatinib administered orally on daily, continuous basis. Imatinib doses of 400mg/600mg administered once daily, whereas daily doses of 800mg/greater administered as equally divided dose taken twice day.

Dose for Imatinib:

Patients receiving p450-inducing antiepileptic drugs:500mg twice day Patients not receiving p450-inducing antiepileptic drugs:400mg/day.

If patients who were not on Cytochrome P450, family 3, subfamily A (CYP3A) enzyme-reducing anti-epileptic drug (EIAED) when originally enrolled must initiate CYP3A enzyme-inducing anti-epileptic drug while on study, study regimen will remain same for minimum of 2 wks before pt transitions to dosing as specified for patients on anti-epileptic drug. If patients originally enrolled must discontinue all EIAEDs while on study, in interest of patient safety, dosing of study regimen will transition to that of patients not on anti-epileptics immediately.

Protocol document: