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BackgroundThe genes caspase-8 (CASP8) and caspase-10 (CASP10) functionally cooperate and play a key role in the initiation of apoptosis. Suppression of apoptosis is one of the major mechanisms underlying the origin and progression of cancer. Previous case-control studies have indicated that the polymorphisms CASP8 D302H and CASP10 V410I are associated with a reduced risk of breast cancer in the general population.MethodsTo evaluate whether the CASP8 D302H (CASP10 V410I) polymorphisms modify breast or ovarian cancer risk in BRCA1 and BRCA2 mutation carriers, we analyzed 7,353 (7,227) subjects of white European origin provided by 19 (18) study groups that participate in the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA). A weighted cohort approach was used to estimate hazard ratios (HR) and 95% confidence intervals (95% CI).ResultsThe minor allele of CASP8 D302H was significantly associated with a reduced risk of breast cancer (per-allele HR, 0.85; 95% CI, 0.76-0.97; P(trend) = 0.011) and ovarian cancer (per-allele HR, 0.69; 95% CI, 0.53-0.89; P(trend) = 0.004) for BRCA1 but not for BRCA2 mutation carriers. The CASP10 V410I polymorphism was not associated with breast or ovarian cancer risk for BRCA1 or BRCA2 mutation carriers.ConclusionsCASP8 D302H decreases breast and ovarian cancer risk for BRCA1 mutation carriers but not for BRCA2 mutation carriers.ImpactThe combined application of these and other recently identified genetic risk modifiers could in the future allow better individual risk calculation and could aid in the individualized counseling and decision making with respect to preventive options in BRCA1 mutation carriers.

Original publication

DOI

10.1158/1055-9965.epi-10-0517

Type

Journal article

Journal

Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology

Publication Date

11/2010

Volume

19

Pages

2859 - 2868

Addresses

Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig, Germany.

Keywords

Epidemiological Study of Familial Breast Cancer (EMBRACE), Kathleen Cuningham Foundation Consortium for Research into Familial Breast Cancer (kConFab), Swedish Breast Cancer Study, Sweden (SWE-BRCA), Hereditary Breast and Ovarian cancer group Netherlands (HEBON), Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA), Humans, Breast Neoplasms, Ovarian Neoplasms, Genetic Predisposition to Disease, Risk Factors, Polymerase Chain Reaction, Genotype, Mutation, Polymorphism, Single Nucleotide, Genes, BRCA1, Genes, BRCA2, Female, Caspase 8, Caspase 10