Prevention of Ovarian Cancer in Women with BRCA 1/2 Mutations Wednesday, April 11, 2018 CCTG is pleased to announce that the OV.25 trial, A Randomized Phase II Double-Blind Placebo-Controlled Trial of Acetylsalicylic Acid (ASA) in Prevention of Ovarian Cancer in Women with BRCA 1/2 Mutations (STICs and STONEs) has been centrally activated. About OV.25 Complexity Level: 2 Eligibility: Women with documented germline BRCA 1/2 mutations, scheduled to undergo risk-reducing surgery (bilateral salpingo-oophorectomy or bilateral salpingectomy inclusive of fimbria) within 6 months to 2 years after the date of randomization. Objectives: PRIMARY OBJECTIVE: To compare the frequency of pre- & early-malignant lesions (serous tubal intraepithelial carcinomas (STICs) or serous tubal occult neoplasias - early (STONEs) in the fallopian tube, at the time of risk reducing surgery. SECONDARY OBJECTIVE: To assess subject acceptance of ASA intervention in a female cohort at high risk for ovarian cancer. TERTIARY OBJECTIVES: (1) To characterize the effect of ASA on high grade serous ovarian cancer (HGSOC) tumourigenesis and to examine the linkage between tumourigenesis and microenvironment. (2) Biobanking for future correlative studies For more information please contact: Wenling Liu