CASC9 and hepatocellular carcinoma: lncRNAs CASC9, PXN-AS1-L, PXN-AS1-S, RAB5IF, and MCM3AP-AS1 modulate HCC cell viability and growth via various mechanisms (Yuan et al., 2017; Klingenberg et al., 2018; Koo et al., 2019; Wang Y. et al., 2019).