Among ependymomas, marked (moderate-to-strong) immunostaining for FGFR1, FGFR3, or both proteins occurred more frequently in cerebral than in non-cerebral tumors (76, 32, and 19% in cerebral, cerebellar, and spinal tumors, respectively, p < 0.001, Fisher’s exact test, Fig. 2d). Here, FGFR1 is linked to ependymoma.