Interestingly, besides LGG, GBM, and PCPG, there is a positive connection exists between FAIM2 expression and cancer-associated fibroblast (CAF) in most tumors through 4 kinds of algorithms (Figure 4C), and the top 5 significantly correlated with expression of FAIM2 were shown in Figure 4D. The gene discussed is FAIM2; the disease is glioblastoma.