Vorinostat in Treating Patients With Progressive or Recurrent Glioblastoma Multiforme

PRIMARY OBJECTIVES:

I. Determine the efficacy of vorinostat (SAHA), in terms of 6-month progression-free survival, in patients with progressive or recurrent glioblastoma multiforme.

II. Determine the safety and toxicity of this drug in these patients.

SECONDARY OBJECTIVES:

I. Determine the pharmacokinetics of this drug in these patients. II. Determine the biologic effect of this drug in target tissues, including primary tumor tissue, in these patients.

III. Correlate genetic alteration of tumors with response in patients treated with this drug.

OUTLINE: This is an open-label, multicenter study. Patients are stratified according to planned surgery (yes [stratum 1] vs no [stratum 2]) and number of prior chemotherapy regimens for progressive/recurrent disease (≤ 1 [stratum 1A] vs ≥ 2 [stratum 1B]).

STRATUM 1: Patients receive oral vorinostat (SAHA) twice daily for 2 weeks. Courses repeat every 3 weeks in the absence of disease progression or unacceptable toxicity. (not undergoing surgery)

STRATUM 2: Beginning 3 days prior to surgery, patients receive oral SAHA once or twice daily for a total of 6 doses. Patients then undergo surgery to remove the tumor. Beginning within 1-4 weeks after surgery, patients receive oral SAHA twice daily for 2 weeks. (undergoing surgery)

Courses repeat every 3 weeks in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed periodically for up to 5 years.

Inclusion criteria

• Histologically confirmed grade 4 astrocytoma (glioblastoma multiforme), including gliosarcoma, at primary diagnosis or recurrence

• Progressive or recurrent disease
• Measurable or evaluable disease by MRI or CT scan
• Performance status - ECOG 0-2
• WBC ≥ 3,000/mm^3
• Absolute neutrophil count ≥ 1,500/mm^3
• Platelet count ≥ 100,000/mm^3
• Hemoglobin ≥ 8 g/dL
• AST ≤ 3 times upper limit of normal (ULN)
• Bilirubin normal
• Creatinine ≤ 1.5 times ULN
• No myocardial infarction within the past 6 months
• No congestive heart failure
• No life-threatening ventricular arrhythmia requiring ongoing maintenance therapy
• No known HIV positivity
• Not immunocompromised except if related to the use of corticosteroids
• No known hypersensitivity to any of the components of the study drug
• No uncontrolled infection
• Not pregnant or nursing
• Negative pregnancy test
• Fertile patients must use effective contraception during and for 6 months after completion of study treatment
• No other malignancy
• No other severe disease that would preclude study participation
• Prior adjuvant chemotherapy allowed
• More than 4 weeks since prior chemotherapy (6 weeks for nitrosoureas)
• More than 2 weeks since prior small molecule cell cycle inhibitor
• Concurrent corticosteroids allowed as long as dose has been stable for ≥ 1 week
• At least 8 weeks since prior radiotherapy

• Must have evidence of tumor progression by MRI or CT scan after radiotherapy
• More than 6 weeks since prior stereotactic radiosurgery or interstitial brachytherapy, unless 1 of the following criteria is met:

• There is a separate lesion by MRI outside of the prior treatment field
• There is evidence of recurrent disease by biopsy, MRI spectroscopy, or positron-emission tomography scan
• More than 2 weeks since prior valproic acid