By Cox's proportional hazards regression model, MIIP expression [risk ratio (RR) 0.650, 95% confidence interval (CI) 0.454-0.930, P = 0.019], as well as pathological stage (RR 1.785, 95% CI 1.463-2.177, P < 0.001) and tumor differentiation grade (RR 1.521, 95% CI 1.062-2.178, P = 0.022) were selected as independent predictors of overall survival, but not other clinicopathological factors including patients' age, gender, or smoking history (P > 0.05). This evidence concerns the gene MIIP and neoplasm.