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Identification of independent association signals and putative functional variants for breast cancer risk through fine-scale mapping of the 12p11 locus

  • on behalf of HEBON
  • , AOCS Investigators
  • , on behalf of EMBRACE
  • , GEMO Study Collaborators
  • , KConFab Investigators
  • , Chenjie Zeng
  • , Xingyi Guo
  • , Jirong Long
  • , Karoline B. Kuchenbaecker
  • , Arnaud Droit
  • , Kyriaki Michailidou
  • , Maya Ghoussaini
  • , Siddhartha Kar
  • , Adam Freeman
  • , John L. Hopper
  • , Roger L. Milne
  • , Manjeet K. Bolla
  • , Qin Wang
  • , Joe Dennis
  • , Simona Agata
  • Shahana Ahmed, Kristiina Aittomäki, Irene L. Andrulis, Hoda Anton-Culver, Natalia N. Antonenkova, Adalgeir Arason, Volker Arndt, Banu K. Arun, Brita Arver, Francois Bacot, Daniel Barrowdale, Caroline Baynes, Alicia Beeghly-Fadiel, Javier Benitez, Marina Bermisheva, Carl Blomqvist, William J. Blot, Natalia V. Bogdanova, Stig E. Bojesen, Bernardo Bonanni, Anne Lise Borresen-Dale, Judith S. Brand, Hiltrud Brauch, Paul Brennan, Hermann Brenner, Annegien Broeks, Thomas Brüning, Barbara Burwinkel, Saundra S. Buys, Qiuyin Cai, Trinidad Caldes, Ian Campbell, Jane Carpenter, Jenny Chang-Claude, Ji Yeob Choi, Mary Daly
  • Hereditary Breast and Ovarian Cancer Research Group
  • Netherlands Cancer Institute
  • University of Melbourne
  • University of Cambridge
  • UNICANCER Genetic Group
  • French Federation of Comprehensive Cancer Centers (UNICANCER)
  • Kathleen Cuningham Consortium for Research into Familial Breast Cancer
  • Research Department
  • Vanderbilt University
  • Université Laval
  • St. Vincent's Hospital Melbourne
  • Cancer Council Victoria
  • IRCCS Istituto Oncologico Veneto - Padova
  • University of Helsinki
  • Fred A. Litwin Center for Cancer Genetics
  • University of Toronto
  • University of California at Irvine
  • N.N. Alexandrov Research Institute of Oncology and Medical Radiology
  • University of Iceland
  • German Cancer Research Center
  • University of Texas MD Anderson Cancer Center
  • Karolinska Institutet
  • McGill University
  • Biomedical Network on Rare Diseases (CIBERER)
  • Centro de Investigación Biomédica en Red de Enferemdades Raras CIBERER
  • Russian Academy of Sciences
  • International Epidemiology Institute
  • Hannover Medical School
  • University of Copenhagen
  • IRCCS Istituto Europeo di Oncologia - Milano
  • University of Oslo
  • Robert Bosch Foundation
  • University of Tübingen
  • International Agency for Research on Cancer
  • Antoni van Leeuwenhoek Hospital
  • Ruhr University Bochum
  • Heidelberg University 
  • University of Utah
  • Instituto de Investigación Sanitaria del Hospital Clinico San Carlos (IdISSC)
  • Peter Maccallum Cancer Centre
  • University of Sydney
  • University of Hamburg
  • Seoul National University

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Background: Multiple recent genome-wide association studies (GWAS) have identified a single nucleotide polymorphism (SNP), rs10771399, at 12p11 that is associated with breast cancer risk. Method: We performed a fine-scale mapping study of a 700 kb region including 441 genotyped and more than 1300 imputed genetic variants in 48,155 cases and 43,612 controls of European descent, 6269 cases and 6624 controls of East Asian descent and 1116 cases and 932 controls of African descent in the Breast Cancer Association Consortium (BCAC; http://bcac.ccge.medschl.cam.ac.uk/ ), and in 15,252 BRCA1 mutation carriers in the Consortium of Investigators of Modifiers of BRCA1/2 (CIMBA). Stepwise regression analyses were performed to identify independent association signals. Data from the Encyclopedia of DNA Elements project (ENCODE) and the Cancer Genome Atlas (TCGA) were used for functional annotation. Results: Analysis of data from European descendants found evidence for four independent association signals at 12p11, represented by rs7297051 (odds ratio (OR) = 1.09, 95 % confidence interval (CI) = 1.06-1.12; P = 3 × 10-9), rs805510 (OR = 1.08, 95 % CI = 1.04-1.12, P = 2 × 10-5), and rs1871152 (OR = 1.04, 95 % CI = 1.02-1.06; P = 2 × 10-4) identified in the general populations, and rs113824616 (P = 7 × 10-5) identified in the meta-analysis of BCAC ER-negative cases and BRCA1 mutation carriers. SNPs rs7297051, rs805510 and rs113824616 were also associated with breast cancer risk at P < 0.05 in East Asians, but none of the associations were statistically significant in African descendants. Multiple candidate functional variants are located in putative enhancer sequences. Chromatin interaction data suggested that PTHLH was the likely target gene of these enhancers. Of the six variants with the strongest evidence of potential functionality, rs11049453 was statistically significantly associated with the expression of PTHLH and its nearby gene CCDC91 at P < 0.05. Conclusion: This study identified four independent association signals at 12p11 and revealed potentially functional variants, providing additional insights into the underlying biological mechanism(s) for the association observed between variants at 12p11 and breast cancer risk.

Original languageEnglish
Article number64
Pages (from-to)64
JournalBreast Cancer Research
Volume18
Issue number1
DOIs
StatePublished - Jun 21 2016

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • Alleles
  • BRCA1 Protein/genetics
  • Breast Neoplasms/epidemiology
  • Case-Control Studies
  • Chromosome Mapping
  • Chromosomes, Human, Pair 12
  • Computational Biology/methods
  • Databases, Genetic
  • Enhancer Elements, Genetic
  • Epigenesis, Genetic
  • Female
  • Genetic Predisposition to Disease
  • Genome-Wide Association Study
  • Genotype
  • Haplotypes
  • Heterozygote
  • Humans
  • Mutation
  • Odds Ratio
  • Polymorphism, Single Nucleotide
  • Population Surveillance
  • Promoter Regions, Genetic
  • Quantitative Trait Loci
  • Risk
  • White People/genetics

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