Preoperatively, 5 mL of venous blood were collected, and human DKK3 and human CD 276 were determined using the Enzyme Linked Immunosorbent Assay Kit (ELISA Kit, Elabscience, Houston, TX, USA), with the aim of enrolling the patient in a larger study to assess the prognostic role of the aforementioned markers in gastric cancer. Here, DKK3 is linked to gastric cancer.