KRT23 and cancer: As expected, ATG9B was positively correlated with KRT23 (r = 0.350, P = 0.002), KRT78 (r = 0.360, P = 0.001), and KRT80 (r = 0.520, P < 0.001), which again proved that cancer cells with higher expression of ATG9B have a phenotype similar to the epithelial cell (Figures 3(c)–3(e)).