Table 1.

Patient characteristics

N patients	54
Age, y, median (range)	55 (21–83)
Histology confirmed	54
Anaplastic astrocytoma grade III	5
Oligoastrocytoma grade III	3
Oligodendroglioma grade III	10
Gliomatosis grade III	1
Glioblastoma grade IV (GBM)	34
Gliosarcoma grade IV	1
MGMT status available from histopathology	51
MGMT positive	15
MGMT negative	36
Surgery
Partial resection (>5% remaining)	31
Subtotal resection (<5% remaining)	8
Complete resection (no residual tumor)	2
Stereotactic biopsy	13

Abbreviations: GBM, glioblastoma multiforme; MGMT,O⁶-DNA methylguanine-methyltransferase.