PTGDR and lung cancer: LncRNA LINC01186, regulated by TGF‐β/SMAD3, inhibits cell migration and invasion through EMT in lung cancer.2 LncRNA UCA1 promotes EMT of breast cancer cells by enhancing the Wnt/β‐catenin signaling pathway.3 H19 and miR‐675 play crucial roles in metastasis, through the regulation of critical events specifically the epithelial to mesenchymal and the mesenchymal to epithelial transitions.4 LncRNA FEZF1‐AS1 enhances EMT through suppressing E‐cadherin and regulating the Wnt pathway in non–small cell lung cancer.5