Table 1.

Patient characteristics.

Total patients with GBM	52
Males	34 (65.4%)
Females	18 (34.6%)
Age (in years) at the time of diagnosis
Median age	67
Range	27–84
Final study numbers	n
GBM excluded due to the IDH1 positivity	4
GBM excluded due to the bad quality of 31-P-MRS spectrum	5
Total IDH1-wildtype GBM patients included in the study	43