Prognostic Significance of <scp>MSI</scp> and <scp>EBV</scp> Positivity in <scp>PD</scp> ‐ <scp>L1</scp> Positive Gastric Cancer: A Systematic Review and Meta‐Analysis

In metastatic disease, MSI and EBV status were not associated with significant prognostic effects. MSI and EBV status have minimal prognostic value in gastric cancer, particularly for OS, but are essential for selecting candidates for immune checkpoint inhibitors. Standardizing biomarker evaluation is critical to enhancing their clinical relevance.