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About
RATIONALE: Radiation therapy uses high-energy x-rays to kill tumor cells. Drugs used in chemotherapy, such as temozolomide, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Giving radiation therapy together with temozolomide may kill more tumor cells. It is not yet known whether giving temozolomide during and/or after radiation therapy is more effective than radiation therapy alone in treating anaplastic glioma.
PURPOSE: This randomized phase III trial is studying giving temozolomide during and/or after radiation therapy to see how well it works compared to radiation therapy alone in treating patients with anaplastic glioma.
Full description
OBJECTIVES:
Primary
Secondary
OUTLINE: This is a multicenter study. Patients are stratified according to institution, World Health Organization (WHO) performance status (0 vs > 0), age (≤ 50 vs > 50), presence of 1p LOH only (yes vs no), presence of oligodendroglial elements (yes vs no), and O6-methylguanine-DNA methyltransferase promoter methylation status (methylated vs unmethylated vs indeterminate). Patients are randomized to 1 of 4 treatment arms.
In all arms, treatment continues in the absence of disease progression or unacceptable toxicity.
Patients complete quality-of-life questionnaires, including EORTC core quality of life questionnaire (QLQ-C30) version 3, EORTC brain cancer module (BCM20), and the Mini Mental Status Exam at baseline, 4 weeks after the completion of radiotherapy, and then every 3 months for 5 years.
Tissue samples are collected at baseline for histology review, 1p/19q analysis, methylation status of the O6-methylguanine-DNA methyltransferase promoter, and isocitrate dehydrogenase mutation analysis.
After completion of study treatment, patients are followed every 3 months.
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Inclusion and exclusion criteria
DISEASE CHARACTERISTICS:
Histologically confirmed diagnosis of 1 of the following:
Newly diagnosed disease
Prior surgery for a low grade tumor is allowed, provided histological confirmation of an anaplastic tumor is present at the time of progression
Absence of combined 1p/19q loss
Tumor material available for central 1p/19q assessment, central O6-methylguanine-DNA methyltransferase promoter methylation status assessment, isocitrate dehydrogenase mutation analysis, and central pathology review
Patients must be on a stable or decreasing dose of steroids for at least two weeks prior to randomization
PATIENT CHARACTERISTICS:
PRIOR CONCURRENT THERAPY:
Primary purpose
Allocation
Interventional model
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751 participants in 4 patient groups
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Data sourced from clinicaltrials.gov
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