Zheng et al. aimed to screen prognostic biomarkers of lncRNA associated with CNA in ovarian cancer26, however, prognostic biomarkers of four lncRNAs associated with CNA were screened after LASSO Cox regression analysis in this study, containing LOC339803, F11-AS1, PCAT2, and TMEM220-AS1, and these four lncRNAs were further used to build the CNA-related lncRNA prognostic model for liver cancer. This evidence concerns the gene CASC19 and liver cancer.