evidence: - one first degree female relative diagnosed with breast cancer aged younger than 40 (a first degree relative is your parent, brother or sister, or your child) - one first degree male relative diagnosed with breast cancer at any age - one first degree relative with cancer in both breasts where the first cancer was diagnosed aged younger than 50 - two first degree relatives, or one first degree and one second degree relative, diagnosed with breast cancer at any age (second degree relatives are aunts, uncles, nephews, nieces, grandparents, and grandchildren) [...] - the cancer was in a man - ovarian cancer - Jewish ancestry - sarcoma (cancer of the bone or soft tissue) in a relative younger than age 45 years - a type of brain tumour called glioma or childhood adrenal cortical carcinomas - complicated patterns of multiple cancers diagnosed at a young age - two or more relatives with breast cancer on your father's side of the family