The primary objective is to investigate the correlation between PD-L1 expression and gastric cancer staging according to American Joint Committee on Cancer (AJCC) TNM staging, eighth edition. The secondary objectives are to investigate the correlation between PD-L1 expression and other clinicopathological characteristics and overall survival. PD-L1 expression, gastric cancer, clinicopathological characters, combined positive score, overall survival
Conditions
Interventions
Patients with gastric cancer and PD-L1 expression
Other
Gastric cancer patients
Sponsors
Faculty of Medicine, Chiang Mai University
Eligibility
Sex/Gender
All
Age
18 Years to 90 Years
Inclusion criteria
Inclusion criteria: 1. Tissue samples from patients who had newly diagnosed gastric cancer and underwent either biopsy or surgical treatment in the Maharaj Nakorn Chiang Mai hospital from January 1, 2018, to December 31, 2021 2. Age more than 18 years old. 3. Tissue sample was available to assess PD-L1 expression by immunohistochemistry technique.
Exclusion criteria
Exclusion criteria: 1. No recorded hospital admission or follow-up data in Maharaj Nakorn Chiang Mai hospital electronic medical record. 2. Diagnosed other types of malignancy (Gastrointestinal stromal tumor, Lymphoma, Neuroendocrine tumor, or Metastatic tumor). 3. Have other active malignancies or during chemotherapy or radiation for other malignancies.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| PD-L1 expression At the beginning of study combined positive score | — |
Secondary
| Measure | Time frame |
|---|---|
| PD-L1 expression 0, 12, 24, 36, 48, 60, 72, 84 months overall survival | — |
Countries
Thailand
Contacts
Public ContactTaned Chitapanarux
Faculty of Medicine, Chiang Mai University
Outcome results
None listed