Identification of Prognostic Biomarkers of Glioblastoma Based on Multidatabase Integration and Its Correlation with Immune-Infiltration Cells

Figure 4

PPI network and hub genes’ identification. (a) PPI network was structured by the 54 upregulated DEGs using STRING database. (b) The top 10 hub genes in the PPI network were screened ground on their connectivity degree. The genes such as CD44, COL1A1, COL1A2, COL3A1, FN1, IGFBP3, LOX, POSTN, TIMP1, and VEGFA are represented from red (high degree) to yellow (low degree). (c) Gene Ontology (GO) chord diagram of the top genes in GBM.

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