Tumor cell lines treated with GSK‐3 inhibitor showed the significant downregulation of E‐cadherin and the significant upregulation of mesenchymal genes vimentin and Snail in Western blot and/or PCR analysis (Figure 1B,C and Figure S1b and S2) and the morphological changes including spindle‐like morphology and mesenchymal‐like phenotype with loss of cell to cell adhesion (Figure 1D and Figure S1c), these results showed that GSK‐3 inhibitor was inducing the EMT in these tumor cell lines. The gene discussed is CDH1; the disease is neoplasm.