A Study to Describe Treatment Patterns of Advanced Breast Cancer in Poland in the Real-world Data Setting

Exclusion Criteria

• •Patient has a documented hormone (estrogen and/or progesterone) receptor expression and lack of HER2 receptor overexpression or lack of HER2 gene amplification (HR+/HER2- breast cancer subtype)
• •Patient had no prior treatment for advanced breast cancer
• •Patient has no symptomatic metastases to the central nervous system
• •There is no other malignancies in patient requiring active treatment
• •Patient is without co-occurring other malignancies treated with palliative assumption
• •Parallel patient's participation in any other clinical trial at the time when the decision over the advanced breast cancer treatment was made or up to 30 days before it.