SNAI1 and breast cancer: On the contrary, the induction of EMT in cancer cell lines can foster expression of IL‐6 at quite high levels in breast cancer cell lines via Twist (Sullivan et al., 2009) or Snail1 (Suarez‐Carmona et al., 2015) and in oral keratinocytes via Snail1 (Lyons et al., 2008).