Table 1.

Datasets used in this study

Dataset	Data type	WHO grade II	WHO grade III	WHO grade IV
CGGA	RNA-seq	291	334	388
TCGA-GBMLGG	RNA-seq	226	244	150
Rembrandt	Microarray	98	85	130
GSE16011	Microarray	24	85	159
GSE4412	Microarray		26	59
GSE43289	Microarray	3	6	28
Total		642	780	914