Table 1. Inclusion criteria.

1	Patients voluntarily join the study and sign an informed consent form.
2	Aged ≥18 years, both men and women.
3	There is histologically confirmed, untreated gastric cancer or gastro-oesophageal junction cancer, and histological examination confirms that pT4NxM0/pT1-3N+M0 gastric cancer is mainly adenocarcinoma.
4	Eastern Cooperative Oncology Group score: 0~1.
5	Have not received antitumour therapy for gastric cancer before surgery, including chemotherapy, targeted, immune and local radiotherapy.