ZEB1 and neoplasm: Previous studies have collectively offered evidence for the detection of EMT in circulating tumor cells (Rhim et al, 2012; Yu et al, 2013; Javaid et al, 2015) and conducted gain‐of‐function/loss‐of‐function assays targeting EMT‐inducing transcription factors such as Twist, Snail, Slug, and Zeb1 (Guaita et al, 2002; Arumugam et al, 2009; Wellner et al, 2009; Taube et al, 2010; Tsai et al, 2012).