Magnetic Resonance Spectroscopy Imaging in Predicting Response to Vorinostat and Temozolomide in Patients With Recurrent or Progressive Glioblastoma

PRIMARY OBJECTIVES: I. To evaluate the strength of the association between magnetic resonance spectroscopy (MRS) imaging measurable biomarkers and response to vorinostat plus temozolomide. SECONDARY OBJECTIVES: I. To evaluate MRS-detected inositol and N-acetylaspartate (NAA) levels (at 3 tesla) as indicators of mood alterations as measured by a self-report depression survey (IDS-SR). OUTLINE: Patients receive vorinostat orally (PO) once daily (QD) on days -7 to -1 (course 1 only) and days 8-14 and 22-28 and temozolomide PO QD on days 1-5. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. Patients previously treated with standard radiotherapy and temozolomide receive maintenance temozolomide PO on days 1-5. Treatment repeats every 28 days in the absence of disease progression or unacceptable toxicities. Patients undergo magnetic resonance spectroscopy imaging at baseline and at approximately 1 and 8 weeks on treatment. Patients also undergo an Inventory of Depression Symptomatology Self-Reported (IDS-SR) assessment at baseline and periodically during study.