CD79A and esophageal squamous cell carcinoma: When N-stage, IgG and IgA were analysed by multivariate analysis using Cox’s proportional hazards model, N-stage (Hazard ratio = 12.292, 95% CI = 1.399 – 108.003, P = 0.024), IgG (Hazard ratio = 4.910, 95% CI = 1.473– 16.364, P = 0.010) and IgA (Hazard ratio = 4.686, 95% CI = 1.492 – 14.722, P = 0.008) were independent prognostic factors of ESCC (Table 2).