However, in OVCAR–3 cells, the upregulated expressions of EpCAM and all studied claudins which are epithelial markers, compared to A2780 and SKOV-3 cells defined that the mesenchymal ovarian cancer cells gained their epithelial characters back to adhere onto the peritoneum after metastasis from tumour capsules and also showed both epithelial and mesenchymal features. This evidence concerns the gene EPCAM and ovarian carcinoma.