FGFR1 and dysembryoplastic neuroepithelial tumor: Duplication of the FGFR1 TKD has been reported in low-grade astrocytomas (including PA), usually in an extracerebellar location, and in dysembryoplastic neuroepithelial tumor (DNET) (Jones et al. 2013; Zhang et al. 2013; Rivera et al. 2016; Fina et al. 2017).