PLA2G4E and esophageal squamous cell carcinoma: To further confirm that EMT-related lncRNA had prognostic value in both cohorts, lncRNA with a hazard ratio (HR) > 1 or HR<1 in the univariate regression model was overlapped between the training and validation cohorts, and the results showed that 3 EMT-related lncRNA expression, including PLA2G4E-AS1, AC063976.1, and LINC01592, significantly correlated with the favorable OS of ESCC patients (HR < 1, Figure 3(b)).