The presence of Snail1 has been shown to increase the levels of Zinc finger E-box-binding homeobox 1 (ZEB1) protein during EMT (Guaita et al. 2002), and the expression of ZEB1 may serve as a potential indicator of invasive endometriosis (Furuya et al. 2017). The gene discussed is SNAI1; the disease is endometriosis.