Gossypol (AT-101) and Temozolomide With or Without Radiation Therapy in Treating Patients With Newly Diagnosed Glioblastoma Multiforme

This is an interventional treatment trial for Brain and Central Nervous System Tumors focused on measuring adult glioblastoma, adult gliosarcoma, adult giant cell glioblastoma Read More

DISEASE CHARACTERISTICS:

• Histologically confirmed supratentorial grade IV astrocytoma (glioblastoma multiforme)

• Meets 1 of the following criteria:

  • Completed surgery within the past 6 weeks (group I)
  • Received radiotherapy and concomitant temozolomide at least 4 weeks but no more than 7 weeks prior to start of study treatment (group II)
• Must be on a stable corticosteroid regimen (no increase for 5 days)

PATIENT CHARACTERISTICS:

• Karnofsky performance status 60-100%
• Hemoglobin ≥ 10 g/dL
• Absolute neutrophil count ≥ 1,500/mm³
• Platelet count ≥ 100,000/mm³
• Creatinine ≤1.5 mg/dL
• Bilirubin ≤ 1.5 mg/dL
• ALT and AST ≤ 2.5 times upper limit of normal
• Not pregnant or nursing
• Negative pregnancy test
• Fertile patients must use effective contraception during and for 2 months after completion of study treatment
• Mini Mental State Exam score ≥ 15
• Must be able to swallow and retain oral medication
• No serious concurrent infection or medical illness that would preclude study participation
• No other malignancy within the past 5 years, except for curatively treated carcinoma in situ or basal cell carcinoma of the skin
• No sensory neuropathy ≥ grade 2
• No allergies to gossypol
• No symptomatic hypercalcemia or hypercalcemia > grade 2

• No gastrointestinal disease including any of the following:

  • Malabsorption syndrome
  • Disease significantly affecting gastrointestinal function
  • Ulcerative colitis
  • Inflammatory bowel disease
  • Partial or complete small bowel obstruction

PRIOR CONCURRENT THERAPY:

• See Disease Characteristics
• Recovered from the immediate postoperative period

• No prior radiotherapy, chemotherapy, immunotherapy, therapy with biologic agents (including immunotoxins, immunoconjugates, antisense agents, peptide-receptor antagonists, interferons, interleukins, tumor-infiltrating lymphocyte therapy, lymphokine-activated killer cells or gene therapy), or hormonal therapy for this brain tumor (group I)

  • Prior glucocorticoid therapy allowed
• No prior polifeprosan 20 with carmustine implant (Gliadel wafers) (group I)
• No prior gossypol
• No prior radiosurgery or brachytherapy
• No prior resection of the stomach or small intestine
• No other concurrent anticancer therapy (i.e., chemotherapeutics or investigational agents)
• No concurrent cytochrome p450 enzyme-inducing anticonvulsant drugs
• No concurrent prophylactic filgrastim (G-CSF)

• No concurrent iron supplements

  • Nutritional supplements containing iron allowed
• No concurrent intensity-modulated radiotherapy
• No concurrent electron, particle, implant, or stereotactic radiosurgery boost