CD274 and glioblastoma: The analysis performed using the web server TIMER2.0 [91,92] also revealed a positive correlation between CHRM3 expression and the expression of IL-8, PD-L1 and VEGF, confirming our experimental findings indicating that the expression of CHRM3 and PD-L1 and the production of IL-8 and VEGF tend to increase together in glioblastoma tumors.