Figure 4. The expression and survival significance of the six key lncRNAs in the ceRNA network in HCC TCGA database. Kaplan-Meier survival curves showed significant OS differences between high- and low-expression of GBAP1 (A), MCM3AP-AS1 (B), SLC16A1-AS1 (C), C3P1(D), HNF4A-AS1 (E) and DIO3OS (F) in TCGA dtabase. Expression levels of GBAP1 (G), MCM3AP-AS1 (H), SLC16A1-AS1 (I), C3P1(D), HNF4A-AS1 (E) and DIO3OS (F) in normal and HCC tissues from TCGA database. N, normal tissue; Ca, cancer tissue.