In the end, six pairs of subnetwork (SNHG3/SNHG20/NUTM2B‐AS1/LINC00909/LINC00346/TUG1‐miR‐148a‐3p‐ITGA5) were acceptable, which might be utilized to be prognostic biomarkers for HCC. The gene discussed is PTGDR; the disease is hepatocellular carcinoma.