PDIA3 and neoplasm: Univariate Cox regression analysis in this study revealed that patient age (≥65 vs. <65), clinical stage (III vs. I; IV vs. I), histological grade (G3-high grade vs. G1-G2), histological type (MSE vs. EEA; SEA vs. EEA), residual tumor (R1-2-X vs. R0), and high expression level of PDIA3 were significantly associated with overall survival (OS) (P < 0.05).