This is an observational study that involves analysing pooled individual data that has already been collected within est clinical trials

Does removing both ovaries prior to menopause reduce breast cancer risk in BRCA1 and BRCA2 mutation carriers?

This study looks at existing health records to see if removing ovaries and fallopian tubes before menopause reduces breast cancer risk for women with BRCA1 or BRCA2 gene changes. It aims to understand if these operations help prevent cancer in these women.