In tumours with wildtype TP53, median overall survival was 60.1 months [95% confidence interval (95%CI) 1.2–139.9 months] in patients with ARID1A expression and 26.2 months (95%CI 3.7–19.1 months) in the case of loss of ARID1A (p = 0.044). Here, ARID1A is linked to neoplasm.