Histologically confirmed Primary invasive (ICD-10 C50) (stage I-IV) or in-situ (ICD-10 D05) breast cancer

50 to 74 years at diagnosis

Patients in the city and state of Hamburg in northern Germany and the Rhine-Neckar-Karlsruhe region in southern Germany

German-speaking

Physically and mentally ability to participate in a personal interview of about 90 minutes

Influence of Lifestyle, Inflammatory Biomarkers, and Genetic Factors on Long-term Breast Cancer Prognosis