Clinical Research Directory

Inclusion Criteria: * age ≥ 18 years; * patients with preoperative diagnosis of gastric cancer confirmed by pathologic biopsy; * no chemotherapy, radiotherapy, targeted and immunotherapy, etc. before enrollment; * willing to participate in the study and sign the informed consent form; * complete clinical data. Exclusion Criteria: * concurrent primary malignant tumor other than gastric cancer; * patients with systemic diseases, such as severe cardiopulmonary; * insufficiency, that affect the choice of treatment plan; * not suitable for enrollment as assessed by the investigator; * incomplete clinical data.