Three of the 11 deregulated proteins (FTL, GNAO1, S100A9) were increased in the patients with GBM, where the others were either decreased (CDKN1B, FADD, POLG, SKP1) or were not detected (ICAM1, MLH1, MMP11, ST8SIA1). Here, POLG is linked to glioblastoma.