KDR and hepatocellular carcinoma: The RTKs signaling pathway related to the development of HCC mainly include vascular endothelial growth factor receptor (VEGFR), fibroblast growth factor receptor (FGFR), epidermal growth factor receptor (EGFR), hepatocyte growth factor receptor (HGFR), platelet‐derived growth factor receptor (PDGFR), and insulin‐like growth factor receptor (IGFR).