STAT3 and glioblastoma: In this study, we only detected colony stimulating factor 3 receptor (CSF3R), which is related to the IL6/STAT3 signaling pathway, as a differentially expressed gene in the Th2Low, PD-L1Low, and PD-1Low subgroups compared with the corresponding high subgroups (Figure 4A–4C); the subgroup divided by CSF3R expression did not show statistical significance for prognosis in the 158 GBM patients (HR = 0.96, P = 0.34, log-rank test; Supplementary Figure 7K).