To further investigate the roles of FGFR1 and FGFR2 in GBM cell migration, we compared FGFR expression levels between primary patient-derived GBM cells (L0, L1, L2) and GBM cell lines A172, T98G, U373, and U87-MG (Fig. 4A). Here, FGFR1 is linked to glioblastoma.