PLA2G4A and liver cancer: The lnc COX7C-5 accelerated malignant characteristics, which could be reversed by the overexpression of miR-581 in liver cancer cells.[5] Lnc PLA2G4A-4 facilitates the proliferation, invasion, and migration of liver cancer cells by sponging miR-23b-3p both in vitro and in vivo.[6] On the other hand, a large number of studies have shown that lncRNAs can promote the expression of functional genes by inhibiting target genes.