ZEB1 and melanoma: As expected the analysis of the TCGA data showed that the expression of CDH2 (N-cadherin) (R = −0.3, p<1.9e-11), TGFB1(R = −0.49, p<2.2e-16) and ZEB1 (R = −0.41, p<2.2e-16) was anti-correlated with MITF in melanoma tumors, whereas the expression of CDH1 (R = 0.42, p<2.2e-16) and SLUG (SNAI2) (R = 0.43, p<2.2e-16) was positively correlated (Figure 4a).