In another type of ncRNA, namely, long ncRNAs (lncRNAs), metastasis-associated lung adenocarcinoma transcript 1 (MALAT1) has been suggested to promote hepatocellular carcinoma (HCC) cell proliferation, migration, and invasion by epigenetically regulating mtDNA-encoded ETC-related genes [18]. Here, MALAT1 is linked to hepatocellular carcinoma.