For example, tumor suppressor Ras association domain family member 1 (RASSF1A) and O6-methylguanine DNA methyltransferase (MGMT) are lost in invasive ovarian cancer [115], while Multiple Sclerosis (MS1) and Wilm’s tumor (WT1) are largely lost in endometroid ovarian cancer but not in serous ovarian cancer [116]. This evidence concerns the gene MGMT and Nephroblastoma.