HOTAIR and liver cancer: The included studies have investigated a variety of lncRNAs known for their dysregulation in liver diseases, including HULC (Highly Upregulated in Liver Cancer), MALAT1 (Metastasis-Associated Lung Adenocarcinoma Transcript 1), MEG3 (Maternally Expressed Gene 3), HOTAIR (HOX Transcript Antisense RNA), LINC00152, TUG1 (Taurine Upregulated Gene 1), and GAS5 (Growth Arrest Specific 5) (Rao et al., 2009).