GC-HBOC BC Risk Explorer
Version 1

The GC-HBOC BC Risk Explorer (GC-HBOC BC-RE) predicts the breast cancer risk for BRCA1/2 carriers and high-risk non-carriers at risk for first breast cancer (cohort 1), and BRCA1/2 carriers and high-risk non-carriers who were previously diagnosed with unilateral breast cancer, and are at risk for contralateral breast cancer (cohort 2). GC-HBOC BC-RE is based on data from female BRCA1/2 carriers and non-carriers with a family history of breast and ovarian cancer, who participated in the intensified surveillance program of the German Consortium for Hereditary Breast and Ovarian Cancer (GC-HBOC).

LHA ID: 7X4U1PEG1D-7

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Human Disease: Hereditary breast ovarian cancer syndrome

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Model format: R package

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Created: 8th Jul 2019 at 08:44

Last updated: 27th Nov 2019 at 12:53

Last used: 20th Dec 2024 at 12:24

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Version 1 Created 8th Jul 2019 at 08:44 by Silke Zachariae

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GC-HBOC - German Consortium for Hereditary Breast and Ovarian Cancer

The German Consortium for Hereditary Breast and Ovarian Cancer HBOC has been founded in 1996 by the German Cancer Aid and has been funded by the German Cancer Aid until recently. GC-HBOC currently comprises 17 university centers providing genetic counseling, histopathological and molecular tissue analysis, genetic testing, and specific structured surveillance programs for early cancer detection at each clinical unit, all based on defined standard operating procedures.

Programme: LIFE Management Cluster

Public web page: http://www.konsortium-familiaerer-brustkrebs.de/

Start date: 1st Jan 1996

Breast cancer risk in BRCA1/2 mutation carriers and noncarriers under prospective intensified surveillance.
GC-HBOC - German Consortium for Hereditary Breast and Ovarian Cancer

Abstract (Expand)

Comparably little is known about breast cancer (BC) risks in women from families tested negative for BRCA1/2 mutations despite an indicative family history, as opposed to BRCA1/2 mutation carriers. We … determined the age-dependent risks of first and contralateral breast cancer (FBC, CBC) both in noncarriers and carriers of BRCA1/2 mutations, who participated in an intensified breast imaging surveillance program. The study was conducted between January 1, 2005, and September 30, 2017, at 12 university centers of the German Consortium for Hereditary Breast and Ovarian Cancer. Two cohorts were prospectively followed up for incident FBC (n = 4,380; 16,398 person-years [PY], median baseline age: 39 years) and CBC (n = 2,993; 10,090 PY, median baseline age: 42 years). Cumulative FBC risk at age 60 was 61.8% (95% CI 52.8-70.9%) for BRCA1 mutation carriers, 43.2% (95% CI 32.1-56.3%) for BRCA2 mutation carriers and 15.7% (95% CI 11.9-20.4%) for noncarriers. FBC risks were significantly higher than in the general population, with incidence rate ratios of 23.9 (95% CI 18.9-29.8) for BRCA1 mutation carriers, 13.5 (95% CI 9.2-19.1) for BRCA2 mutation carriers and 4.9 (95% CI 3.8-6.3) for BRCA1/2 noncarriers. Cumulative CBC risk 10 years after FBC was 25.1% (95% CI 19.6-31.9%) for BRCA1 mutation carriers, 6.6% (95% CI 3.4-12.5%) for BRCA2 mutation carriers and 3.6% (95% CI 2.2-5.7%) for noncarriers. CBC risk in noncarriers was similar to women with unilateral BC from the general population. Further studies are needed to confirm whether less intensified surveillance is justified in women from BRCA1/2 negative families with elevated risk.

Authors: C. Engel, C. Fischer, S. Zachariae, K. Bucksch, K. Rhiem, J. Giesecke, N. Herold, B. Wappenschmidt, V. Hubbel, M. Maringa, S. Reichstein-Gnielinski, E. Hahnen, C. R. Bartram, N. Dikow, S. Schott, D. Speiser, D. Horn, E. M. Fallenberg, M. Kiechle, A. S. Quante, A. S. Vesper, T. Fehm, C. Mundhenke, N. Arnold, E. Leinert, W. Just, U. Siebers-Renelt, S. Weigel, A. Gehrig, A. Wockel, B. Schlegelberger, S. Pertschy, K. Kast, P. Wimberger, S. Briest, M. Loeffler, U. Bick, R. K. Schmutzler

Date Published: 13th May 2019

Publication Type: Not specified

Human Diseases: hereditary breast ovarian cancer syndrome

hereditary breast ovarian cancer syndrome
GC-HBOC - German Consortium for Hereditary Breast and Ovarian Cancer

Taxonomy URI: http://purl.obolibrary.org/obo/DOID_5683

Synonyms: BRCA1- and BRCA2-associated hereditary breast and ovarian cancer (HBOC)

Definitions: Xref MGI., An autosomal dominant disease characterized by the higher than normal tendency associated with BRCA1 and BRCA2 to develop breast and ovarian cancers in genetically related families.

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