ARID1A and ovarian clear cell cancer: The typical molecular alterations found in the other subtypes are KRAS-, CDKN2A- and TP53-mutations for the mucinous subtype, BRAF-, PTEN-, ARID1A- and CTNNB1-mutations for the endometrioid subtype, and PIK3CA- and ARID1A-mutations for the clear cell ovarian carcinomas [13].