DPP4 and cancer: In this study, we identified a set of associated DEGs (CD44, CTGF, DPP4, CRYAB, EGLN3, FGF1, and FOS) with at least one functional enrichment, such as “angiogenesis”, “binding of endothelial cells”, “development of blood vessel”, MAPK signaling, HCM, and pathways in cancer (Table 1).