PDGFB and colorectal carcinoma: Further, data retrieved from the TCGA database suggest significantly higher expression levels of fibroblast growth factor receptor 4 (FGFR4) and platelet‐derived growth factor subunit B (PDGFB), as well as lower levels of caspase 9 (CASP9) and serum‐ and glucocorticoid‐regulated kinase (SGK1) in CRC than adjacent normal tissues (Figure 5B), of which the adjusted trends were consistent with RNA‐seq profile (Figure 5C).