This is a multi-centre prospective, non-inferiority trial. Patients will be randomized to two treatment groups in a 1:1 ratio and will be stratified by age, Karnofsky Performance Status and extent of the surgical resection. This study will assess the effect of a one-week radiotherapy regimen in comparison with a three-week radiotherapy regimen on the survival of elderly and/or frail patients with glioblastoma multiforme (Frail: ≥\>50 years old and with a KPS of 50% or less50%-70%; Elderly and frail: ≥65 years and with a KPS of 50% - 70%; Elderly: ≥65 years and with a KPS of 80% - 100%).
This is a multi-centre prospective, non-inferiority trial. Patients will be randomized to two treatment groups in a 1:1 ratio and will be stratified by: * Age (\<65 and ≥65 years old) * Karnofsky Performance Status (≤70 and \> 7050 or higher) * Extent of the resection at surgery (biopsy only versus complete/near total and gross total or incomplete /partial resection) Randomization: Patients will be randomized to receive one of the two following treatments: Arm 1: * Short Radiotherapy * 25 Gy/5 fractions * 1 week (5 fractions per week) Arm 2: * Regular Radiotherapy * 40 Gy/15 fractions * 3 weeks (5 fractions per week)
25 Gy in 5 daily fractions over 1 week
40 Gy in 15 daily fractions over 3 weeks
Mendoza, Argentina