Subsequently, we estimated the association of PTPN18 expression with the activation of CD8+ T cells and revealed that the infiltration of CD8+ T cells was adversely associated with PTPN18 in LGG (cor = −0.063, P < 0.05) and GBM (cor = −0.147, P < 0.05) (Figure 3(c)). Here, CD8A is linked to glioblastoma.