SNAI1 and breast cancer: NT-3-induced mesenchymal–epithelial reversion also coincides with reduced migratory ability, increased expression of human epidermal growth factor receptor 2 (HER2) and E-cadherin at the cell–cell junction, and reduced expression of EMT-inducing transcription factors, such as Snail, in the MET-reverted breast cancer cells [64,65].