For example, HOTAIR is up‐regulated in lung cancer specimens and displayed potential tumour‐promoting roles 25, 26, 27; MALAT1 is a critical regulator of the metastasis phenotype of lung cancer cells, as a competing endogenous RNA (ceRNA) to regulate autophagy‐related 7 (ATG7) gene expression by sponging miR142‐3p.28 The gene discussed is HOTAIR; the disease is lung cancer.