One of the interesting cross‐regulatory mechanisms between lncRNAs and miRNAs is the function of a competing endogenous RNA or a molecular sponge.22 For instance, Wang et al. have found that DLEU1 contributes to ovarian carcinoma tumourigenesis and progression by interacting with miR‐490‐3p and altering CDK1 expression. This evidence concerns the gene CDK1 and ovarian carcinoma.