Germline BRCA1 and BRCA2 Mutations in Jewish Women Affected by Breast Cancer

Inclusion Criteria:

Patients are eligible for the study if they are over 18 years of age, identify their ancestry as Jewish (both Sephardic and Ashkenazi Jews are eligible), have or have had a diagnosis of breast cancer, and are able to give informed consent.
Relatives, age 18 or older, of the patients who meet eligibility criteria above and are found to have a specific BRCA1 or BRCA2 mutation if they are able to give informed consent.