ARID1A and gastric cancer: The pooled data showed that ARID1A expression loss predicted poor overall survival (OS) in GC (Hazard Ratio (HR) = 1.60; 95% Confidence Interval (CI) = 1.40–1.81; P < 0.001), with low heterogeneity among these studies (I2 = 21.5%; P = 0.214).