For instance, various drug-resistant cancers, including oxaliplatin-resistant colorectal cancer cells [4], paclitaxel-resistant ovarian cancer cells [5], and gefitinib-resistant lung cancer cells [6], present the transition from epithelial to mesenchymal phenotype along with a loss of epithelial adhesion molecule Ecadherin and a gain of mesenchymal markers such as vimentin, Ncadherin, and fibronectin. This evidence concerns the gene CDH1 and cancer.