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National Institutes of Health: National Cancer Institute: Division of Cancer Control and Population Sciences
Grant Details

Grant Number: 5U01CA161032-02 Interpret this number
Primary Investigator: Olopade, Olufunmilayo
Organization: University Of Chicago
Project Title: Using Genomics to Reduce Breast Cancer Disparities in the African Diaspora
Fiscal Year: 2013
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Abstract

DESCRIPTION (provided by applicant): It is now well recognized that African Americans experience a disproportionate burden of pre-menopausal breast cancer and higher mortality rates in comparison to other racial/ethnic groups. Recent studies demonstrate that African Americans are more likely to develop triple-negative breast cancer (TNBC) or basal- like breast cancer in particular. We recently showed that indigenous West Africans, the founder population of African Americans had even higher proportions of TNBC than do African Americans. We have recruited 1233 breast cancer cases and 1101 controls in Phase 1 of the Nigerian Breast Cancer Study (NBCS) and recruitment of additional 1500 cases and ethnicity & age-matched 1500 controls is ongoing. In addition, we are conducting a genome-wide association study (GWAS) of breast cancer in women of African Ancestry to study common variants for breast cancer and results will be available in autumn 2011. Here, we propose a high- throughput whole genome DNA sequencing and computational biology approach to examine rare, moderate- penetrance variants for breast cancers and expand the analysis of ethnic diversity in breast cancer genomes. Our specific aims are to: 1) fully sequence genomes (WGS) of normal blood and matched primary breast tumors from 200 well-phenotyped cases and 200 controls to identify germline and somatic variants for triple negative breast cancer. We will distinguish inherited from somatic variants by comparing variants identified in tumors with the paired normal blood samples and the healthy controls to evaluate the etiologic effect of the inherited variants; 2) Validate selected genes/variants in >5000 breast cancer cases and >5000 controls of African and non-African ancestry. We will first impute rare genotypes identified by whole genome sequencing into all the GWAS samples to conduct an in silico replication. Then, we will perform replication in the African American Breast Cancer Consortium, which includes Black Women's Health Study and the Triple Negative Breast Cancer Consortium. Our access to other Consortia including BCAC, CIMBA and Post GWAS U19 will provide other cohorts for replicating our studies. This integrative approach will increase our power to identify associations between rare inherited variants and the most aggressive form of breast cancer in an understudied but unique population. The replication of our study findings in other populations and our data sharing plans will bring enormous public health benefit by harnessing genomics and biotechnology to improve global health equity and reduce health disparities.

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Publications

Challenges And Disparities In The Application Of Personalized Genomic Medicine To Populations With African Ancestry
Authors: Kessler M.D. , Yerges-Armstrong L. , Taub M.A. , Shetty A.C. , Maloney K. , Jeng L.J. , Ruczinski I. , Levin A.M. , Williams L.K. , Beaty T.H. , et al. .
Source: Nature Communications, 2016-10-11 00:00:00.0; 7, p. 12521.
PMID: 27725664
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A Continuum Of Admixture In The Western Hemisphere Revealed By The African Diaspora Genome
Authors: Mathias R.A. , Taub M.A. , Gignoux C.R. , Fu W. , Musharoff S. , O'Connor T.D. , Vergara C. , Torgerson D.G. , Pino-Yanes M. , Shringarpure S.S. , et al. .
Source: Nature Communications, 2016-10-11 00:00:00.0; 7, p. 12522.
PMID: 27725671
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Effect Of Brca Germline Mutations On Breast Cancer Prognosis: A Systematic Review And Meta-analysis
Authors: Baretta Z. , Mocellin S. , Goldin E. , Olopade O.I. , Huo D. .
Source: Medicine, 2016 Oct; 95(40), p. e4975.
PMID: 27749552
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Functional Mechanisms Underlying Pleiotropic Risk Alleles At The 19p13.1 Breast-ovarian Cancer Susceptibility Locus
Authors: Lawrenson K. , Kar S. , McCue K. , Kuchenbaeker K. , Michailidou K. , Tyrer J. , Beesley J. , Ramus S.J. , Li Q. , Delgado M.K. , et al. .
Source: Nature Communications, 2016-09-07 00:00:00.0; 7, p. 12675.
PMID: 27601076
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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
Authors: Zeng C. , Guo X. , Long J. , Kuchenbaecker K.B. , Droit A. , Michailidou K. , Ghoussaini M. , Kar S. , Freeman A. , Hopper J.L. , et al. .
Source: Breast Cancer Research : Bcr, 2016-06-21 00:00:00.0; 18(1), p. 64.
PMID: 27459855
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No Clinical Utility Of Kras Variant Rs61764370 For Ovarian Or Breast Cancer
Authors: Ovarian Cancer Association Consortium, Breast Cancer Association Consortium, and Consortium of Modifiers of BRCA1 and BRCA2 , Hollestelle A. , van der Baan F.H. , Berchuck A. , Johnatty S.E. , Aben K.K. , Agnarsson B.A. , Aittomäki K. , Alducci E. , Andrulis I.L. , et al. .
Source: Gynecologic Oncology, 2016 May; 141(2), p. 386-401.
PMID: 25940428
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Genetic Anticipation In Brca1/brca2 Families After Controlling For Ascertainment Bias And Cohort Effect
Authors: Guindalini R.S. , Song A. , Fackenthal J.D. , Olopade O.I. , Huo D. .
Source: Cancer, 2016-03-15 00:00:00.0; , .
PMID: 26992017
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Male Breast Cancer In Brca1 And Brca2 Mutation Carriers: Pathology Data From The Consortium Of Investigators Of Modifiers Of Brca1/2
Authors: Silvestri V. , Barrowdale D. , Mulligan A.M. , Neuhausen S.L. , Fox S. , Karlan B.Y. , Mitchell G. , James P. , Thull D.L. , Zorn K.K. , et al. .
Source: Breast Cancer Research : Bcr, 2016; 18(1), p. 15.
PMID: 26857456
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Building Local Capacity For Genomics Research In Africa: Recommendations From Analysis Of Publications In Sub-saharan Africa From 2004 To 2013
Authors: Adedokun B.O. , Olopade C.O. , Olopade O.I. .
Source: Global Health Action, 2016; 9, p. 31026.
PMID: 27178644
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A Unified Set-based Test With Adaptive Filtering For Gene-environment Interaction Analyses
Authors: Liu Q. , Chen L.S. , Nicolae D.L. , Pierce B.L. .
Source: Biometrics, 2015-10-23 00:00:00.0; , .
PMID: 26496228
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Assessing Associations Between The Aurka-hmmr-tpx2-tubg1 Functional Module And Breast Cancer Risk In Brca1/2 Mutation Carriers
Authors: Blanco I. , Kuchenbaecker K. , Cuadras D. , Wang X. , Barrowdale D. , de Garibay G.R. , Librado P. , Sánchez-Gracia A. , Rozas J. , Bonifaci N. , et al. .
Source: Plos One, 2015; 10(4), p. e0120020.
PMID: 25830658
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An Original Phylogenetic Approach Identified Mitochondrial Haplogroup T1a1 As Inversely Associated With Breast Cancer Risk In Brca2 Mutation Carriers
Authors: Blein S. , Bardel C. , Danjean V. , McGuffog L. , Healey S. , Barrowdale D. , Lee A. , Dennis J. , Kuchenbaecker K.B. , Soucy P. , et al. .
Source: Breast Cancer Research : Bcr, 2015; 17, p. 61.
PMID: 25925750
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Dna Glycosylases Involved In Base Excision Repair May Be Associated With Cancer Risk In Brca1 And Brca2 Mutation Carriers
Authors: Osorio A. , Milne R.L. , Kuchenbaecker K. , Vaclová T. , Pita G. , Alonso R. , Peterlongo P. , Blanco I. , de la Hoya M. , Duran M. , et al. .
Source: Plos Genetics, 2014 Apr; 10(4), p. e1004256.
PMID: 24698998
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Associations Of Common Breast Cancer Susceptibility Alleles With Risk Of Breast Cancer Subtypes In Brca1 And Brca2 Mutation Carriers
Authors: Kuchenbaecker K.B. , Neuhausen S.L. , Robson M. , Barrowdale D. , McGuffog L. , Mulligan A.M. , Andrulis I.L. , Spurdle A.B. , Schmidt M.K. , Schmutzler R.K. , et al. .
Source: Breast Cancer Research : Bcr, 2014; 16(6), p. 3416.
PMID: 25919761
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