About this trial
Focusing on the clinical question of whether patients with advanced gastric cancer can benefit from immunotherapy, this project intends to detect the degree of CD8+ tumor-infiltrating lymphocyte infiltration in patients with advanced gastric cancer before and after receiving neoadjuvant combined immunotherapy and neoadjuvant therapy alone. To explore the evolving nature of tumor immune response before and after neoadjuvant therapy for gastric cancer, and quantitatively present it through chemical immunohistochemical techniques to achieve a more accurate diagnosis and treatment and improve the long-term efficacy of patients.
Eligibility criteria
Qualifiers
Age from 18 to 75 years
Primary gastric adenocarcinoma (papillary, tubular, mucinous, signet ring cell, or poorly differentiated) confirmed pathologically ;
CT/MRI, PET-CT, or laparoscopic exploration should be performed before surgery to confirm the diagnosis of stage ≥cT2 or N+;
Patients who have not received other treatments such as surgery, radiotherapy, chemotherapy, targeted therapy or immunotherapy;
Disqualifiers
History of other malignant disease within past five years;
History of immunodeficiency, including HIV positive, or other acquired congenital immunodeficiency disease, or a history of organ transplantation and allogeneic bone marrow transplantation;
Contraindications to surgery and chemotherapy, or whose physical condition and organ function do not allow for major abdominal surgery
Distant metastases;
Trial design
Treatments tested in this trial
- radical surgery after neoadjuvant immunotherapy
- radical surgery after neoadjuvant chemotherapy