Acridine Carboxamide in Treating Patients With Recurrent Glioblastoma Multiforme

DISEASE CHARACTERISTICS: Histologically or cytologically confirmed recurrent glioblastoma multiforme Measurable disease on contrast MRI Lesion at least 2 cm in diameter PATIENT CHARACTERISTICS: Age: 18 and over Performance status: ECOG 0-2 Karnofsky 70-100% Life expectancy: At least 3 months Hematopoietic: WBC greater than 3,000/mm3 Platelet count greater than 100,000/mm3 Hepatic: Bilirubin less than 1.5 times upper limit of normal (ULN) Alkaline phosphatase no greater than 2 times ULN Transaminases no greater than 2 times ULN Renal: Creatinine no greater than 1.5 mg/dL Cardiovascular: Normal cardiac function No ischemic heart disease within the past 6 months Normal electrocardiogram Other: No unstable systemic diseases No active uncontrolled infections No prior or other concurrent malignancies except adequately treated basal or squamous cell skin cancer or carcinoma in situ of the cervix No psychological, familial, sociological, or geographical condition that would preclude study Not pregnant or nursing Fertile patients must use effective contraception PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: At least 6 weeks since prior adjuvant chemotherapy for brain tumor No other prior chemotherapy Endocrine therapy: Must be on stable or decreasing doses of corticosteroids for at least 2 weeks Radiotherapy: At least 3 months since prior radiotherapy to the brain No prior high dose radiotherapy No prior stereotactic boost or implant radiotherapy Surgery: No prior surgery (except biopsy) for recurrent brain tumor At least 3 months since prior surgery for primary brain tumor Other: No other concurrent anticancer agents No other concurrent investigational therapy