Early Detection of Ovarian Cancer

The goal of this clinical study is to evaluate the feasibility and acceptability of the Galleri multi-cancer early detection blood test in people with BRCA1 or BRCA2 gene changes who are at high risk for ovarian cancer. The study will also explore how well the test detects ovarian cancer or related precancerous conditions. The main questions it aims to answer are: * Is it feasible to incorporate the Galleri blood test into the care of people at high \* risk for ovarian cancer? * Is the Galleri blood test acceptable to participants? * How well does the Galleri blood test identify ovarian cancer or related precancerous conditions? Participants will: * Receive the Galleri blood test. * Complete questionnaires about their experience with the test. * Some participants will also complete an interview about their experiences and preferences. * Continue with their planned standard medical care, including surgery or follow-up visits, as appropriate.