highly significantp = 0.002
As shown, the OS difference between ARID1A‐loss GC patients with ACT and ARID1A‐loss GC patients without ACT remained highly significant after adjusting for age, TNM classification, grade, and TCGA subtype (TCGA: HR, 0.39, 95% CI, 0.22–0.71, p = 0.002, Table S7 ; ZSHS: HR, 0.07, 95% CI, 0.02–0.21, p < 0.001, Table S8 ).