1. Common susceptibility loci for male breast cancer
- Author
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Giovanna Masala, Susan L. Neuhausen, Montserrat Garcia Closas, Vasilios Georgoulias, Paul D.P. Pharoah, Katarzyna Tomczyk, Henrik Flyger, Håkan Olsson, D. Timothy Bishop, Alison M. Dunning, Eitan Friedman, Matthew Pugh, Michael Jones, Johanna Mattson, Sarah Maguire, Richard S. Houlston, Paul A. James, Douglas F. Easton, Valentina Silvestri, Srdjan Novaković, Rosie Cooke, Maartje J. Hooning, Eleni Perraki, Manuela Gago-Dominguez, Domenico Palli, Laura Ottini, Nick Orr, Kyle Thompson, Heli Nevanlinna, Yael Laitman, Antoinette Hollestelle, Stig E. Bojesen, Timothy Winter, Alison H. Trainer, Ines Zanna, Mateja Krajc, Linda Steele, Jose E. Castelao, Emmanouil Saloustros, Olivia Fletcher, Ingrid Hedenfalk, Alan Ashworth, Anthony J. Swerdlow, Medical Oncology, HUS Gynecology and Obstetrics, Biosciences, Department of Obstetrics and Gynecology, HUS Comprehensive Cancer Center, Department of Oncology, University of Helsinki, and Helsinki University Hospital Area
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Male ,Oncology ,Cancer Research ,Linkage disequilibrium ,IDENTIFIES 2 ,Genome-wide association study ,PHENOTYPE ,Linkage Disequilibrium ,0302 clinical medicine ,MULTIPLE ,Odds Ratio ,skin and connective tissue diseases ,0303 health sciences ,Articles ,OVARIAN ,Receptors, Estrogen ,030220 oncology & carcinogenesis ,Male breast cancer ,Female ,male breast cancer ,SNPs ,GWAS ,cancer risk ,AcademicSubjects/MED00010 ,EXPRESSION ,medicine.medical_specialty ,3122 Cancers ,Quantitative Trait Loci ,Single-nucleotide polymorphism ,Biology ,Polymorphism, Single Nucleotide ,Breast Neoplasms, Male ,03 medical and health sciences ,Breast cancer ,SDG 3 - Good Health and Well-being ,Internal medicine ,Confidence Intervals ,medicine ,Humans ,Genetic Predisposition to Disease ,GENOME-WIDE ASSOCIATION ,FUNCTIONAL VARIANTS ,Genotyping ,METAANALYSIS ,RISK LOCUS ,030304 developmental biology ,Case-control study ,Odds ratio ,medicine.disease ,Case-Control Studies ,Linear Models ,Genome-Wide Association Study - Abstract
BackgroundThe aetiology of male breast cancer (MBC) is poorly understood. In particular, the extent to which the genetic basis of MBC differs from female breast cancer (FBC) is unknown. A previous genome-wide association study (GWAS) of MBC identified two predisposition loci for the disease, both of which were also associated with risk of FBC.MethodsWe performed genome-wide single nucleotide polymorphism (SNP) genotyping of European ancestry MBC case subjects and controls, in three stages. Associations between directly genotyped and imputed SNPs with MBC were assessed using fixed-effects meta-analysis of 1,380 cases and 3,620 controls. Replication genotyping of 810 cases and 1,026 controls was used to validate variants with P-values < 1 x 10-06. Genetic correlation with FBC was evaluated using LD score regression, by comprehensively examining the associations of published FBC risk loci with risk of MBC and by assessing associations between a FBC polygenic risk score (PRS) and MBC. All statistical tests were two-sided.ResultsThe GWAS identified three novel MBC susceptibility loci that attained genome-wide significance (P < 5 x 10-08). Genetic correlation analysis revealed a strong shared genetic basis with estrogen-receptor (ER) positive FBC. Males in the top quintile of genetic risk had a four-fold increased risk of breast cancer relative to those in the bottom quintile (odds ratio = 3.86, 95% confidence interval = 3.07 to 4.87, P = 2.08 x 10-30).ConclusionsThese findings advance our understanding of the genetic basis of MBC, providing support for an overlapping genetic aetiology with FBC and identifying a four-fold high risk group of susceptible men.
- Published
- 2020
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