VEGFA and cancer: The other functionally discrete sets of genes regulated by HOX genes in cancer are the integrins, cell cycle components, vascular endothelial growth factor (VEGF) and vascular endothelial growth factor receptor (VEGFR) (angiogenesis) and components of the TGF‐β, wnt/β‐catenin, receptor tyrosine kinase (RTK), Atk/PI3K, NF‐κB/p65 and cytokine (JAK/STAT) signalling pathways.