We found a relatively high correlation between TNFSF13 and U-251 MG cell lineage (Supplementary Figure S1A) according to the data from TCGA and CGGA datasets, and TNFSF13 expression was highly associated with various tumors, such as GBM, although there was no significant enhanced expression of TNFSF13 in low-grade glioma (LGG) (Supplementary Figure S1B). Here, TNFSF13 is linked to low grade glioma.