POLD3 and hepatocellular carcinoma: From the above analyses, the four candidate lncRNAs (MIR4435-2HG, SNHG9, lnc-LCP2-1, and lnc-POLD3-2, green-labeled in Figure 1A,B) were selected to further investigate whether they might be novel diagnostic biomarkers for HCC at the cohort level.