EZH2 and gastric cancer: STAT3 expression in GC tissues was found to be significantly associated with patients’ age (P = 0.024), TNM stage (P = 0.0001), and lymph node metastasis (P = 0.016), and EZH2 expression was positively correlated with patients’ gender (P = 0.043) and TNM stage (P = 0.002).