GRIA1 and glioblastoma: Functionally, co-culture of GBM cells (U87-EGFRvIII) and neuronal cells (SH-SY5Y) demonstrated possible contact of each cytoplasmic process (Additional file 1: Fig. S6A), and genetic inhibition of GRIA1 decreased (p < 0.01) migration of GBM cells with EGFRvIII although its effect on cell proliferation was mild (p < 0.05) (Fig. 6C, D, Additional file 1: Fig. S6B).