TNFRSF12A and astrocytoma (excluding glioblastoma): Strikingly, in a previous study that has stratified glioblastomas according to their transcriptional signature, Fn14 is suggested as a gene classifier between oligodendroglioma/astrocytoma-rich (WHO Grade II/III-rich) and glioblastoma-rich (WHO Grade IV-rich) subtypes [7].