SERPINF1 and esophageal squamous cell carcinoma: Furthermore, according to the multivariate regression analysis, we established a novel nomogram model, including PEDF expression in combination with age, gender, T stage, N stage, TNM stage, and tumour grade, to predict the individual ESCC patients of 1-, 3-, and 5-year overall survival (OS) rates of individual ESCC patients (Figure 3A).