The histopathological report of the specimen tissue stated a rosette-forming glioneuronal tumor, WHO grade I with a mutation in the fibroblast growth factor receptor 1 (FGFR1) and in the phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha (PIK3CA). The gene discussed is FGFR1; the disease is mixed neuronal-glial tumor.