HOXB9 and cancer: In trophoblast cells, HOXB9 could contribute to the implantation process (reviewed in [114, 115]) by promoting the epithelial-to-mesenchymal transition (EMT), angiogenesis, cell migration and invasion (mouse) through the regulation of angiogenic factors and TGF-β2, as evidenced in cancers [47, 85–87].