Age of onset in hereditary and familial breast cancer

Andreas Brandt, Justo Lorenzo Bermejo, Jan Sundquist & Kari Hemminki
Introduction: A family history is associated with an increased risk of breast cancer. When it includes early onset or bilateral breast cancers and multiple cases of breast or ovarian cancers, it is a strong predictor of hereditary breast cancer. Hereditary breast cancer is associated with an earlier[for full text, please go to the a.m. URL]