Programmed death 1, ligand 1 and 2 correlated genes and their association with mutation, immune infiltration and clinical outcomes of hepatocellular carcinoma

Figure 1 Relationship between gene expression and clinical data. A: Programmed death 1 (PD-1)/programmed death ligand 1 (PD-L1)/programmed death ligand 2 (PD-L2) expression in recurrence and non-recurrence groups; B: PD-1/PD-L1/PD-L2 expression in stage I-II and stage III-IV groups; C: Prognostic analysis of PD-1/PD-L1/PD-L2 in hepatocellular carcinoma. The median of the expression value was selected as the cut-off point. KM plotter was used for prognosis analysis. PD-1: Programmed death 1; PD-L1: Programmed death ligand 1; PD-L2: Programmed death ligand 2; CI: Confidence interval.