Hypofractionated Stereotactic Radiotherapy in Recurrent Glioblastoma Multiforme (GBM Hypo RT)
Recurrent Glioblastoma Multiforme
About this trial
This is an interventional treatment trial for Recurrent Glioblastoma Multiforme focused on measuring malignant glioma, glioblastoma, radiotherapy, randomized
Eligibility Criteria
Inclusion Criteria:
- 18 years of age or older
- KPS equal or greater than 60
- Anatomopathological confirmation of GBM
- Previous RT with therapeutic doses
- At least 5 months from the end of RT course
- Not a candidate to surgical resection
- Patients with partial resection after resection of recurrent GBM will be allowed
- Patients with local progression after resection of recurrent GBM will be allowed
- Lesion with a maximal 150cc volume, as defined by enhancing portion in contrast enhanced MRI
- Hemoglobin levels (Hb) equal or greater than 10ng/dl. Blood transfusions to correct the Hb will be allowed.
Exclusion Criteria:
- Important comorbidities
- Concomitant chemotherapy
- Contraindication to MRI
- Brainstem glioma
Sites / Locations
- Hospital das Clinicas da Faculdade de Medicina da USP
Arms of the Study
Arm 1
Arm 2
Active Comparator
Experimental
Stereotactic hypofractionated RT 5x5Gy
Stereotactic hypofractionated RT 5x7Gy
Stereotactic hypofractionated radiation therapy delivered as follows: Gross tumor volume (GTV) equals enhancement area in T1 contrast enhanced MRI. Planning tumor volume (PTV) equals GTV plus 3mm margin. the dose of radiation will be 25Gy delivered in 5 fractions.1 fraction per day, non consecutive days in a maximum period of 10 working days. RT to begin in a maximum of 2 weeks after randomization.
Stereotactic hypofractionated radiation therapy delivered as follows: Gross tumor volume (GTV) equals enhancement area in T1 contrast enhanced MRI. Planning tumor volume (PTV) equals GTV plus 3mm margin. the dose of radiation will be 35Gy delivered in 5 fractions.1 fraction per day, non consecutive days in a maximum period of 10 working days. RT to begin in a maximum of 2 weeks after randomization.