Research Paper Volume 15, Issue 4 pp 1107—1129
Prognostic significance of epidermal growth factor receptor and programmed cell death-ligand 1 co-expression in esophageal squamous cell carcinoma
Figure 4. The relationship between PD-L1 and clinicopathologic characteristics in ESCC. (A) Histological type. (B) Radiation therapy. (C) Barretts esophagus. (D) BMI. (E) OS event. (F) DSS event. (G) PFI event. (H) columnar metaplasia. *, **, *** represents P < 0.05, P < 0.01, P < 0.001, respectively. ns represents “No significant”. Abbreviations: BMI: Body Mass Index; OS: Overall Survival; DSS: Disease-Specific Survival; PFI: Progression-Free Interval.