Clinical Research Directory

Inclusion Criteria: * Willingness to participate in the study and ability to provide informed consent * Willingness to complete a questionnaire and to provide a blood sample at the initial visit and at follow up annual visits * Undergoing a screening mammogram at participating sites. Subjects undergoing routine annual diagnostic mammograms or CEM as part of a screening study are also eligible. Exclusion Criteria: * Current or recent (within the prior 6 months) history of breast feeding * Personal history of breast cancer (ductal breast carcinoma in situ \[DCIS\] or invasive breast cancer) * Personal history of any other cancer (excluding in-situ, stage 0, and non-melanoma skin cancers and other pre-cancerous conditions) treated within the last 5 years.