CD8B and glioblastoma: As expected, increased expression levels of GM-CSF (hazard ratio [HR]: 0.854, P = 0.008) or CD8B (HR: 0.906, P = 0.078) in GBM was associated with longer overall survival (OS) (Supplementary Table 1), while increased FGL2 expression was associated with poorer OS, though the difference was not statistically significant (HR: 1.113, P = 0.071) (Supplementary Table 1).