Exclusive expression of AFAP-AS1 in TNBC cells was further confirmed by RT-qPCR, and was suggested to possibly promote proliferation, migration, or invasion of cancer cells by facilitating EMT, through downregulation of E-cadherin and elevation of mesenchymal markers, such as vimentin, N-cadherin, Slug and Snail. This evidence concerns the gene CDH1 and cancer.