ARID1A and female reproductive organ cancer: In 45 patients with gynecological cancers the most commonly altered genes were TP53 (n = 22/45, 48.9%), ARID1A (n = 6/45, 13.3%), BRCA1/2 (n = 6/45, 13.3%), and KRAS (n = 5/45, 11.1%) (Figure 2a and Supplementary Table S5).