GPT2 expression also increased significantly according to malignancy (AGI relative to AGII p < 0.001, to AGIII p < 0.0001, to GBM p < 0.05; AGII vs AGIII p < 0.05, AGIII vs GBM p < 0.005; Dunn test), besides, the only different expression level in comparison with NN was AGIII (p < 0.0001) (Fig. 1a). Here, GPT2 is linked to glioblastoma.