Observation or Radiation Therapy With or Without Combination Chemotherapy in Treating Patients With Low-Grade Glioma
Brain and Central Nervous System Tumors
About this trial
This is an interventional treatment trial for Brain and Central Nervous System Tumors focused on measuring adult oligodendroglioma, adult diffuse astrocytoma, adult pilocytic astrocytoma
Eligibility Criteria
DISEASE CHARACTERISTICS: Histologically confirmed unifocal or multifocal supratentorial WHO grade II astrocytoma (diffuse fibrillary, protoplasmic, or gemistocytic), oligodendroglioma, or oligoastrocytoma Patients with neurofibromatosis are eligible No other low-grade histologies, including: Pilocytic astrocytoma Subependymal giant cell astrocytoma of tuberous sclerosis Subependymoma Pleomorphic xanthoastrocytoma Presence of a neuronal element such as ganglioglioma Dysneuroembryoplastic epithelial tumor No presence of any high-grade glioma, including: Anaplastic astrocytoma Glioblastoma multiforme Anaplastic oligodendroglioma Anaplastic oligoastrocytoma No tumors in nonsupratentorial or other locations including optic chiasm, optic nerve(s), pons, medulla, cerebellum, or spinal cord No evidence of spread to spinal meninges or noncontiguous cranial meninges (i.e., leptomeningeal gliomatosis) No gliomatosis cerebri PATIENT CHARACTERISTICS: Age: 18 and over Performance status: Karnofsky 60-100% Hematopoietic: For high-risk patients: Granulocyte count at least 1,500/mm^3 Platelet count normal Hepatic: Bilirubin no greater than 2 times normal SGOT or SGPT no greater than 4 times normal Alkaline phosphatase no greater than 2 times normal Renal: Creatinine no greater than 2 times normal Pulmonary: No chronic lung disease (unless DLCO at least 60%) Neurological: Neurologic function score no greater than 3 Other: Not pregnant or nursing Fertile patients must use effective contraception No other malignancy within the past 5 years except carcinoma in situ of the cervix or nonmelanoma skin cancer No active infection PRIOR CONCURRENT THERAPY: Biologic therapy: Not specified Chemotherapy: No prior chemotherapy Endocrine therapy: Not specified Radiotherapy: No prior radiotherapy to the head or neck (unless brain is clearly excluded, such as radiotherapy for localized vocal cord cancer) Surgery: Not specified
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
No Intervention
Experimental
Experimental
Observation
Radiation therapy
Radiation plus PCV chemotherapy
Observation only.
Radiation therapy only.
Radiation and Procarbazine/CCNU/Vincristine (PCV) chemotherapy