In the univariate analysis, differentiation (P = 0.015), tumor invasion (P = 0.001), lymph node metastasis (P < 0.001), distant metastasis (P < 0.001), clinical stage (P < 0.001), YAP expression (P < 0.001), and CD24 expression (P < 0.001) were the statistically significant predictors for a patient’s overall survival (Table 1). This evidence concerns the gene CD24 and metastasis.