PROM1 and gastric cancer: Furthermore, those studies were divided into four groups according to the following criteria respectively: (1) overexpression of CD133 in gastric cancer tissues and pericarcinoma tissues or normal gastric tissues; (2) overexpression of CD133 in positive and negative lymph node metastasis of gastric cancer tissues; (3) overexpression of CD133 in positive and negative distant metastasis of gastric cancer tissues; (4) overexpression of CD133 in In different clinical stages of gastric cancer tissues; (5) CD133 overexpression and 5-year overall survival.