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Identification and characterisation of novel associations in the CASP8/ALS2CR12 region on chromosome 2 with breast cancer risk

Lin, Wei-Yu; Camp, Nicola J.; Ghoussaini, Maya; Beesley, Jonathan; Michailidou, Kyriaki; Hopper, John L.; Apicella, Carmel; Stone, Jennifer; Schmidt, Marjanka K.; Broeks, Annegien; Van't Veer, Laura J.; Rutgers, Emiel J. Th.; Muir, Kenneth; Lophatananon,
Fonte: Oxford University Press Publicador: Oxford University Press
Tipo: Article; accepted version
Português
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This is the accepted manuscript version. The final version is available from Oxford Journals at http://hmg.oxfordjournals.org/content/early/2014/08/28/hmg.ddu431.abstract.; Previous studies have suggested that polymorphisms in CASP8 on chromosome 2 are associated with breast cancer risk. To clarify the role of CASP8 in breast cancer susceptibility we carried out dense genotyping of this region in the Breast Cancer Association Consortium (BCAC). Single nucleotide polymorphisms (SNPs) spanning a 1Mb region around CASP8 were genotyped in 46,450 breast cancer cases and 42,600 controls of European origin from 41 studies participating in the BCAC as part of a custom genotyping array experiment (iCOGS). Missing genotypes and SNPs were imputed and, after quality exclusions, 501 typed and 1,232 imputed SNPs were included in logistic regression models adjusting for study and ancestry principal components. The SNPs retained in the final model were investigated further in data from nine genome-wide association studies (GWAS) comprising in total 10,052 case and 12,575 control subjects. The most significant association signal observed in European subjects was for the imputed intronic SNP rs1830298 in ALS2CR12 (telomeric to CASP8), with per allele odds ratio and 95% confidence interval [OR (95% CI)] for the minor allele of 1.05 (1.03-1.07)...