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Two Novel Susceptibility Loci for Prostate Cancer in Men of African Ancestry

  • for the PRACTICAL/ELLIPSE Consortium
  • University of Southern California
  • University of North Carolina at Chapel Hill
  • Cedars-Sinai Medical Center
  • National Institutes of Health
  • University of Arizona
  • University of Texas MD Anderson Cancer Center
  • Henry Ford Health System
  • Johns Hopkins University
  • Fred Hutchinson Cancer Research Center
  • University of Washington
  • Vanderbilt University
  • Meharry Medical College
  • Cancer Prevention Institute of California
  • Stanford University
  • Moffitt Cancer Center
  • NorthShore University HealthSystem
  • American Cancer Society

Research output: Contribution to journalArticlepeer-review

68 Scopus citations

Abstract

Prostate cancer incidence is 1.6-fold higher in African Americans than in other populations. The risk factors that drive this disparity are unknown and potentially consist of social, environmental, and genetic influences. To investigate the genetic basis of prostate cancerin men of African ancestry, we performed a genome-wide associationmeta-analysis using two-sided statistical tests in 10 202 case subjects and 10 810 control subjects.We identified novel signals on chromosomes 13q34 and 22q12, with the risk-associated alleles found only in men of African ancestry (13q34: rs75823044, risk allele frequency = 2.2%, odds ratio [OR] = 1.55, 95% confidence interval [CI] = 1.37 to 1.76, P = 6.10×10-12; 22q12.1: rs78554043, risk allele frequency = 1.5%, OR=1.62, 95% CI=1.39 to 1.89, P = 7.50×10-10). At 13q34, the signal is located 5′ of the gene IRS2 and 3′ of a long noncoding RNA, while at 22q12 the candidate functional allele is amissense variant in the CHEK2 gene. These findings provide further support for the role of ancestry-specific germline variation in contributing to population differences in prostate cancer risk.

Original languageEnglish
JournalJournal of the National Cancer Institute
Volume109
Issue number8
DOIs
StatePublished - Aug 1 2017

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