Table 1.

Baseline clinical characteristics of the analyzed datasets

Characteristic	GSE4290	GSE4412	GSE43378	TCGA Glioblastoma
No. of cases	180	85	50	172
Age (years)
≥55	NA	19	26	110
<55	NA	66	24	56
Undefined	NA	0	0	6
Gender
Male	NA	32	34	107
Female	NA	53	16	59
Undefined	NA	0	0	6
WHO grade
Nontumor	23	0	0	5
II	45	0	5	0
III	31	26	13	0
IV	77	59	32	167
Undefined	4	0	0	0

NA, not available.