Glioblastoma (GB) is the most frequent brain tumour. Standard treatment after surgical resection is radiation therapy with Temozolomide. But patients who can afford only a biopsy of their lesion due to the location in eloquent areas of their tumour or multifocality, don't get benefit from such treatment and their median survival is in the best case of only 9 months. These patients constitute 30% of Glioblastomas. Clinical trials in this setting are required as patients should be treated immediately after the biopsy to prevent neurological deterioration.