Table 1.

The selected samples for this current study

GEO accessions	GBM number	Normal number	Reference
GSE2223	29	4	15
GSE4058	29	3	16
GSE4290	77	23	17
GSE13276	5	3	18
GSE68848	228	28	19
GSE70231	21	6	20
TCGA‐GBM	169	5	25