In the high TNFSF13 expression cohort, typical genomic alterations in GBM-like amplification of chr7 and deletion of chr10 were observed (Figure 2A); while in the low TNFSF13 expression cohort, deletion of 1p and 19q, a distinguishing genomic feature of oligodendroglioma (50), was exhibited more frequently (Figure 2B). This evidence concerns the gene TNFSF13 and oligodendroglioma.