PDIA3P1 and esophageal squamous cell carcinoma: Moreover, PDIA3P1 expression was also significantly upregulated in human ESCC cell lines (KYSE‐30, KYSE‐150, KYSE‐520, KYSE‐410, TE‐1, and Eca‐109) compared with HEEC (Figure S1F, Supporting Information).