We performed IHC experiment on GBM tissues and identified that the expression of SLC1A5 was positively correlated with the expression of CD163 (M2-like macrophage marker) and IBA-1 (total macrophage marker), whereas negatively associated with CD86 expression (M1-like macrophage marker) (Fig. 7H–K). This evidence concerns the gene SLC1A5 and glioblastoma.