CD8A and glioblastoma: An analysis of the TIMER database showed that PLAGL2 expression in GBM was significantly correlated with the expression of marker genes in CD8+T cells, general T cells, B cells, monocytes, M1 and M2 macrophages, neutrophils, DCs, NK cells, Th1, Th2, Tfh, Th17, and Treg (Table 5).