UCA1 has the ability to regulate the process of EMT in MDA‐MB‐231 cells. When UCA1 is suppressed, it negatively affects the mesenchymal characteristics of these cells. The overexpression of UCA1 enhances the invasiveness of cancer of the breast cells, maybe via the activation of the Wnt/β‐catenin signaling pathway. This evidence concerns the gene UCA1 and cancer.