SNAI1 and cancer: In addition, a higher proportion of CTCs expressing TWIST1, SNAIL1, or vimentin were identified in patients with advanced stage cancer compared to those with early‐stage cancer, suggesting that these cells may prevail during disease progression and contribute to metastatic outgrowth (Aktas et al., 2009; Barrière et al., 2012; Giordano et al., 2012; Kallergi et al., 2011; Papadaki et al., 2014; Wu et al., 2015).