CDH1 and gastric cancer: Due to direct correlation between the risk of metastatic disease that is directly related to patient prognosis, and clinicopathologic factors14increasing the prevalence of gastric cancer in different communities, including our country, Iran, lack of appropriate treatment response , shortcomings and contradictions that exist in many previous studies as well as insufficient studies in this field, we decided to investigate the expression of E-cadherin in all different kinds of gastric cancer and its correlation with each of mentioned parameters.