To establish a risk stratification for ESCC patients, we first obtain the risk score based on the coefficients of multivariate COX regression, and the formula for calculating the risk score was as follows: risk score = −0.45 × (expression level of AC063976.1) − 0.54 × (expression level of LINC01592) − 0.23 × (expression level of PLA2G4E − AS1) (Figure 3(c)). Here, PLA2G4E is linked to esophageal squamous cell carcinoma.