BDNF and neoplasm: EMT is the process which usually occurs in the period of the embryonic development and organogenesis.20 However, abnormal activation of the EMT facilitates the pathogenesis of tumour, thus inducing metastasis.21 LncRNAs play an important role in inducing the EMT in various types of tumour.22 Our study indicated that lncRNA BDNF‐AS inhibited the EMT in EC cells.