ARID1A and ovarian carcinoma: To date, ARID1A sequencing studies are lacking in non-carcinoma-related endometriosis, probably due to the fact that the occurrence of ARID1A mutations is expected to be low in endometriosis (considering that the relative risk to developing ovarian cancer during a lifetime is approximately 1.5%) and that ARID1A sequencing studies are technically challenging, due to the large size of the gene and the random distribution of the mutations along the gene.