Proliferating cell nuclear antigen pseudogene 1 (PCNAP1) as one of the notable lncRNAs in HCC, for instance, is shown to modulate hepatitis B virus (HBV) replication, enhance tumor growth 8, while lipoprotein(a) like 2 (LPAL2) is reported to suppress tumor growth and metastasis in HCC by modulating the expression of matrix metalloproteinase 9 (MMP9) 9. This evidence concerns the gene PCNAP1 and hepatocellular carcinoma.