Epidemiology Study in Postmenopausal Women With Estrogen Receptor Positive Breast Cancer

An Epidemiological, Non-interventional Study to Evaluate Patient Compliance in Postmenopausal Women With Estrogen Receptor Positive Breast Cancer

This observational study in estrogen receptor positive early breast cancer patients is aimed to evaluate the patients' compliance to aromatase inhibitor (AI) therapy and to collect country-specific data in estrogen receptor positive early breast cancer patients including data on demography, disease characteristics and disease management.

Inclusion Criteria:

• Postmenopausal females with estrogen receptor positive breast cancer that are currently treated with aromatase inhibitor (AI) medication
• Provision of subject informed consent

Exclusion Criteria:

• If participating in any clinical trial, the subject cannot take part in this study.