MKLN1 and hepatocellular carcinoma: GAS5 and GAS5-AS1 are the only two lncRNAs that are downregulated in the HCC tissues, whereas the other lncRNAs which include MALAT-1, HOXB-AS1, HOTAIR, TUG1, MKLN-1, etc. are the lncRNAs which are upregulated in HCC tissues when compared to normal tissues and their expression are related to poor prognosis and poor overall survival.