As shown in Table 3, we found clinical stage, tumor depth (P<0.001), lymph node metastasis (P<0.001), distant metastasis (P<0.001) and Ecto-5′-nucleotidase expression (P<0.001) were prognostic factors for overall survival in gastric cancer patients. The gene discussed is NT5E; the disease is metastatic malignant neoplasm in the lymph nodes.