Moreover, in patients with nonserous ovarian tumors, no BRCA1/2 mutations were identified in our study, and existing somatic mutations focused on PTEN, TP53 and ATM in 2 clear cell, 2 endometrioid, and 1 mucinous carcinoma and 1 malignant Brenner carcinoma. This evidence concerns the gene PTEN and ovarian neoplasm.