Figure 5. GSEA and GSVA of hub genes in the PAH. (A, C, E, G, I) Top 3 KEGG pathways in the high-expression group of single hub genes. (A) ANGPT2; (C) CSF3R; (E) CXCL9; (G) NT5E; (I) FGF7. (B, D, F, H, J) GSVA-derived clustering heatmaps of top 20 differentially expressed pathways for each hub gene. (B) ANGPT2; (D) CSF3R; (F) CXCL9; (H) NT5E; (J) FGF7.