Figure 2.

Overall survival of the study population according to programmed death ligand‐1 (PD‐L1) expression, CD8 expression and hot tumor immune status. A, Overall survival of esophageal squamous cell carcinoma (ESCC) patients according to tumoral PD‐L1 expression. B, Overall survival of ESCC patients according to infiltrating CD8‐positive lymphocytes. C, Overall survival of ESCC patients according to hot tumor immune status defined as high tumoral PD‐L1 expression and high infiltrating CD8‐positive lymphocytes in ESCC tissues. ESCC patient groups with high PD‐L1, high CD8 or hot tumor immune status were not associated with poor prognosis compared to the other groups