This study will provide essential information about the impact of RGCT on the choice of primary surgical treatment among women with breast cancer with an increased risk that their cancer has a hereditary basis, and about the psychosocial effects of the RGCT process and the ensuing treatment decisions. It will inform clinical geneticists, surgeons and patients about the potential benefits and risks of RGCT, and will be useful in further shaping the content and process of genetic counseling in the diagnostic and early treatment phase of breast cancer.