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

Study Overview
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Brief Summary
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The MARIEplus study is a prospective cohort of breast cancer patients recruited into the MARIE (Mamma Carcinoma Risk factor InvEstigation) study, a population-based case-control study of breast cancer conducted in two German study regions, Hansestadt Hamburg and Rhine-Neckar-Karlsruhe (RNK) region. Participants were identified through participating clinics and the Hamburg cancer registry between January 1st, 2001 and September 30th, 2005 in Hamburg and between August 1st, 2002 and July 31st, 2005 in the RNK study region. Patients were aged 50-74 years at histologically confirmed primary invasive (stages I to IV) or in situ breast tumor (stage 0). Comprehensive information on demographic, socio-economic, and lifestyle factors was collected at multiple time points: at recruitment by a standardized face-to-face interview and at follow-up median 6 years as well as 11 years later using computer assisted telephone interview. Vital status was assessed in 2009 and again in 2015 via the population registries and causes of death were obtained from death certificates and coded according to the 10th revision of the International Statistical Classification of Diseases and Related Health Problems (ICD-10). Information on the clinical course was abstracted from medical records to verify clinical events either self-reported in follow-up interviews or reported by treating physicians. The studies were approved by the ethics committee of the University of Heidelberg and the University of Hamburg and conducted in agreement with the Helsinki Declaration. Written informed consent was provided by all participants at baseline and during follow-up. The primary objectives of this study are To assess the association of modifiable lifestyle factors and personal factors, including BMI, diet, physical activity, tobacco and alcohol use, menopausal hormone therapy, socioeconomic status, with breast cancer survival, overall and according to tumor type, after accounting for established prognostic factors. To examine the influence of genetic variants on breast cancer relapse and survival To assess the association of lifestyle factors and their changes in the course of survivorship on subsequent breast cancer prognosis. To assess the individual and combined association of inflammation/metabolic biomarkers as well as changes in their serum levels with subsequent breast cancer prognosis overall and according to tumor type. To assess whether and to what extent the associations between breast cancer prognosis and lifestyle factors and/or their changes are mediated by circulating biomarker levels.

Official Title
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The Influence of Lifestyle and Genetic Risk Factors, Circulating Inflammatory Biomarkers and Menopausal Hormone Therapy on Long-term Prognosis After Postmenopausal Breast Cancer

Conditions
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Breast Cancer, Breast Cancer Mortality, Breast Cancer Survival, Postmenopausal Breast Cancer, Lifestyle, Genetic Factors, Inflammation, Inflammatory Biomarkers, Hormone Therapy, Phytoestrogens

Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 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 Exclusion Criteria: Previous diagnosis of breast cancer

Ages Eligible for Study
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Minimum Age: 50 Years
Maximum Age: 74 Years

Sexes Eligible for Study
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Female

Study Plan
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How is the study designed?
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What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Mortality after breast cancer diagnosis | Risk of mortality (all-cause, breast cancer specific) | Median follow-up time 6 and 11 years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Risk of recurrence | Risk of recurrence | Median follow-up time 6 and 11 years |