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.
OBJECTIVES: Primary * To assess whether concurrent radiotherapy with daily temozolomide improves overall survival as compared to no daily temozolomide in patients with non-1p/19q deleted anaplastic glioma. * To assess whether adjuvant temozolomide improves survival as compared to no adjuvant temozolomide in patients with non-1p/19q deleted anaplastic glioma. Secondary * To assess whether concurrent and adjuvant temozolomide prolongs progression-free survival and neurological deterioration-free survival in patients with non-1p/19q deleted anaplastic glioma. * To assess the safety of concurrent and adjuvant temozolomide in patients with non-1p/19q deleted anaplastic glioma, including late effects on cognition. * To assess the impact of concurrent and adjuvant temozolomide on the quality of life of patients with non-1p/19q deleted anaplastic glioma. 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. * Arm I: Patients undergo radiotherapy\* once daily, 5 days a week, for 6.5 weeks (total of 33 fractions). * Arm II: Patients undergo radiotherapy\* once daily, 5 days a week and receive oral temozolomide once daily for 6.5 weeks (total of 33 fractions of radiotherapy). * Arm III: Patients undergo radiotherapy\* once daily, 5 days a week for 6.5 weeks (total of 33 fractions). Beginning 4 weeks after completion of radiotherapy, patients receive adjuvant oral temozolomide once daily on days 1-5. Treatment with adjuvant temozolomide repeats every 28 days for up to 12 courses. * Arm IV: Patients undergo radiotherapy\* once daily, 5 days a week and receive oral temozolomide once daily for 6.5 weeks (total of 33 fractions of radiotherapy). Beginning 4 weeks after completion of radiotherapy, patients receive adjuvant oral temozolomide once daily on days 1-5. Treatment with adjuvant temozolomide repeats every 28 days for up to 12 courses. * Patients must begin radiotherapy within 8 days after randomization and within 7 weeks after surgery. 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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
751
Patients randomized to concomitant temozolomide will receive temozolomide continuously at a daily dose of 75 mg/m² during radiotherapy.
O6-Methylguanine-DNA Methyltransferase (MGMT) methylation status is used for stratification at randomization.
Prognostic factor analyses
Patients randomized to adjuvant temozolomide will start adjuvant temozolomide after a 4 week resting period after the end of radiotherapy.
Quality of Life analysis will also be used to assess neurological deterioration free progression
Radiotherapy will consist of a conventionally fractionated regimen for 6.5 weeks in a once daily schedule
Arizona Oncology Services Foundation
Phoenix, Arizona, United States
Cedars-Sinai Medical Center
Los Angeles, California, United States
UCSF University of California San Francisco Medical Center-Mount Zion
San Francisco, California, United States
University of Florida
Gainesville, Florida, United States
Mayo Clinic in Florida
Jacksonville, Florida, United States
Overall Survival as Measured From the Day of Randomization
The duration of survival is the time interval between randomization and the date of death due to any cause. Patients not reported dead or lost to follow up will be censored at the date of the last follow up examination.
Time frame: from date from enrollment till the date of death (time till death is up to 10.9 years after patient enrollment in the study)
Progression-free Survival
Disease progression is defined as radiological or neurological/clinical progression (whichever occurs first); progression free survival (PFS) is the time interval between the date of randomization and the date of disease progression or death whichever occurs first. If neither event has been observed, the patient is censored at the date of the last follow up examination. Radiological progression was defined as increase of contrast enhancing area on MRI or CT scans of more than 25% as measured by two perpendicular diameters compared to the smallest measurements ever recorded for the same lesion by the same technique. The appearance of new lesions with or without contrast enhancement Neurological/clinical progression was defined as:decrease in WHO performance status,deterioration of neurological functions,appearance of signs/symptoms of increased intracranial pressure,and/or start of corticosteroid or increase of corticosteroid dosage by 50% for control of neurological symptoms.
Time frame: from randomization till the date of disease progression or death (time till death is up to 10.9 years after patient enrollment in the study)
Quality of Life of the Patient
Quality of life was assessed by the EORTC Quality of Life Questionnaire (QLQ-C30) version 3 and the Brain Cancer Module-20
Time frame: from 14 days prior to randomization till five years or death (time till death is up to 10.9 years after patient enrollment in the study)
Neurological Deterioration Free Survival
Neurological deterioration is defined as a decrease in WHO performance status as follows: decrease in WHO performance status * for patients with baseline WHO performance status 0: deterioration to WHO performance status 2 or worse for which no other explanation is present, and which is maintained for at least three months * for patients with baseline WHO performance status 1 or 2: deterioration to WHO performance status 3 or worse for which no other explanation is present and which is maintained for at least three months The date of neurological deterioration will be the first date the persistent decrease in performance status was diagnosed. Neurological deterioration free progression is the time interval between the date of randomization and the date of neurological deterioration or death whichever occurs first. If neither event has been observed, the patient is censored at the date of the last follow up examination
Time frame: within 2 weeks of randomization; during radiotherapy at week 4 and 6; 4 weeks after the end of radiotherapy; Six monthly after the end of radiotherapy; Prior to each cycle of adjuvant therapy; Every six months after the documentation of first progression.
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