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Additive interactions between susceptibility single-nucleotide polymorphisms identified in genome-wide association studies and breast cancer risk factors in the Breast and Prostate Cancer Cohort Consortium
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2014 (English)In: American Journal of Epidemiology, ISSN 0002-9262, E-ISSN 1476-6256, Vol. 180, no 10, 1018-1027 p.Article in journal (Refereed) Published
Abstract [en]

Additive interactions can have public health and etiological implications but are infrequently reported. We assessed departures from additivity on the absolute risk scale between 9 established breast cancer risk factors and 23 susceptibility single-nucleotide polymorphisms (SNPs) identified from genome-wide association studies among 10,146 non-Hispanic white breast cancer cases and 12,760 controls within the National Cancer Institute's Breast and Prostate Cancer Cohort Consortium. We estimated the relative excess risk due to interaction and its 95% confidence interval for each pairwise combination of SNPs and nongenetic risk factors using age- and cohort-adjusted logistic regression models. After correction for multiple comparisons, we identified a statistically significant relative excess risk due to interaction (uncorrected P = 4.51 x 10(-5)) between a SNP in the DNA repair protein RAD51 homolog 2 gene (RAD51L1; rs10483813) and body mass index (weight (kg)/height (m)(2)). We also compared additive and multiplicative polygenic risk prediction models using per-allele odds ratio estimates from previous studies for breast-cancer susceptibility SNPs and observed that the multiplicative model had a substantially better goodness of fit than the additive model.

Place, publisher, year, edition, pages
Oxford University Press, 2014. Vol. 180, no 10, 1018-1027 p.
Keyword [en]
additive interactions, breast cancer, genome-wide association studies, single-nucleotide polymorphisms
National Category
Environmental Health and Occupational Health Public Health, Global Health, Social Medicine and Epidemiology
Identifiers
URN: urn:nbn:se:umu:diva-97214DOI: 10.1093/aje/kwu214ISI: 000344773900008OAI: oai:DiVA.org:umu-97214DiVA: diva2:773371
Available from: 2014-12-18 Created: 2014-12-12 Last updated: 2017-12-05Bibliographically approved

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CiteExportLink to record
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Citation style
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  • modern-language-association-8th-edition
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  • Other style
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  • de-DE
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  • en-US
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