PGF and neoplasm: Additionally, the “ECM−receptor interaction” and “TGF−beta signaling pathway” gene set were enriched in high expression groups of ANGPT2 and HSPA8, whereas “Intestinal immune network for IgA production” was enriched in the PGF, FLT3, and STMNI high-expression groups, respectively, which suggest that these hub gene sets were all closely involved in tumor proliferation (Figures 8A–F).