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The aim of the study was to assess the accuracy of some specific biochemical indicators in discriminating between Helicobacter pylori-associated gastritis and H. pylori-associated stomach cancer (serum gastrin level, serum soluble E-cadherin and tissue COX-2 activity, as well as serodiagnostic markers for H. pylori infection) in order to find a simple diagnostic test that can reasonably predict the development of gastric cancer. The study participants comprised 20 patients with gastric carcinoma, 20 patients with positive H. pylori-associated gastritis and 20 individuals as the control group. Standard procedures and quality control measures were followed. Using cut-off values and ROC analysis to assess the diagnostic abilities of the biochemical indicators, E-cadherin showed the highest sensitivity (100%). We suggest that close follow-up together with periodic endoscopic examination for all patients with persistent H. pylori infection and serum soluble E-cadherin level above 5 microg/mL is essential.

501 Evaluation of specific biochemical indicators of Helicobacter pylori-associated gastric cancer in Egypt