Prognostic role of tumor-infiltrating lymphocytes in gastric cancer: A systematic review and meta-analysis.

Background: To analyze the relationship between tumor-infiltrating lymphocytes (TILs) subtypes and infiltration locations and the prognosis of gastric cancer (GC) patients.

Methods: Eligible articles were obtained through systematic retrieval and rigorous screening, collecting study information and extracting hazard ratio (HR), 95 % confidence interval (CI) for pooled analyses of disease-free survival (DFS) and overall survival (OS).

Results: Higher CD4 TILs were correlated with favorable OS (HR=0.