MAPK1 and glioblastoma: Firstly, the expression ERK1(pT202, pY204), ERK2(pT185, pY187), JNK1/2(pT183, pT185), JNK3(pT221, pY223) and p38(pT180, pY182) in GBM was evaluated based on the Human Protein Atlas (Figure 1A).