DNA repair gene variants in relation to overall cancer risk: A population-based study

Anthony J. Alberg, Timothy J. Jorgensen, Ingo Ruczinski, Lee Wheless, Yin Yao Shugart, Yvette Berthier-Schaad, Bailey Kessing, Judith Hoffman-Bolton, Kathy J. Helzlsouer, W. H. Linda Kao, Lesley Francis, Rhoda M. Alani, Michael W. Smith, Paul Timothy Strickland

Research output: Contribution to journalArticle

Abstract

The hypothesis that germ-line polymorphisms in DNA repair genes influence cancer risk has previously been tested primarily on a cancer site-specific basis. The purpose of this study was to test the hypothesis that DNA repair gene allelic variants contribute to globally elevated cancer risk by measuring associations with risk of all cancers that occurred within a population-based cohort. In the CLUE II cohort study established in 1989 in Washington County, MD, this study was comprised of all 3619 cancer cases ascertained through 2007 compared with a sample of 2296 with no cancer. Associations were measured between 759 DNA repair gene single nucleotide polymorphisms (SNPs) and risk of all cancers. A SNP in O6-methylguanine-DNA methyltransferase, MGMT, (rs2296675) was significantly associated with overall cancer risk [per minor allele odds ratio (OR) 1.30, 95% confidence interval (CI) 1.19-1.43 and P-value: 4.1 ? 10-8]. The association between rs2296675 and cancer risk was stronger among those aged ≤54 years old than those who were ≥55 years at baseline (P-for-interaction = 0.021). OR were in the direction of increased risk for all 15 categories of malignancies studied (P <0.0001), ranging from 1.22 (P = 0.42) for ovarian cancer to 2.01 (P = 0.008) for urinary tract cancers; the smallest P-value was for breast cancer (OR 1.45, P = 0.0002). The results indicate that the minor allele of MGMT SNP rs2296675, a common genetic marker with 37% carriers, was significantly associated with increased risk of cancer across multiple tissues. Replication is needed to more definitively determine the scientific and public health significance of this observed association.

Original languageEnglish (US)
Pages (from-to)86-92
Number of pages7
JournalCarcinogenesis
Volume34
Issue number1
DOIs
StatePublished - Jan 2013

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DNA Repair
Population
Genes
Neoplasms
Single Nucleotide Polymorphism
Odds Ratio
Alleles
Urologic Neoplasms
Neoplasm Genes
Methyltransferases
Genetic Markers
Germ Cells
Ovarian Neoplasms
Cohort Studies
Public Health
Confidence Intervals
Breast Neoplasms
DNA

ASJC Scopus subject areas

  • Cancer Research

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DNA repair gene variants in relation to overall cancer risk : A population-based study. / Alberg, Anthony J.; Jorgensen, Timothy J.; Ruczinski, Ingo; Wheless, Lee; Shugart, Yin Yao; Berthier-Schaad, Yvette; Kessing, Bailey; Hoffman-Bolton, Judith; Helzlsouer, Kathy J.; Linda Kao, W. H.; Francis, Lesley; Alani, Rhoda M.; Smith, Michael W.; Strickland, Paul Timothy.

In: Carcinogenesis, Vol. 34, No. 1, 01.2013, p. 86-92.

Research output: Contribution to journalArticle

Alberg, AJ, Jorgensen, TJ, Ruczinski, I, Wheless, L, Shugart, YY, Berthier-Schaad, Y, Kessing, B, Hoffman-Bolton, J, Helzlsouer, KJ, Linda Kao, WH, Francis, L, Alani, RM, Smith, MW & Strickland, PT 2013, 'DNA repair gene variants in relation to overall cancer risk: A population-based study', Carcinogenesis, vol. 34, no. 1, pp. 86-92. https://doi.org/10.1093/carcin/bgs304
Alberg, Anthony J. ; Jorgensen, Timothy J. ; Ruczinski, Ingo ; Wheless, Lee ; Shugart, Yin Yao ; Berthier-Schaad, Yvette ; Kessing, Bailey ; Hoffman-Bolton, Judith ; Helzlsouer, Kathy J. ; Linda Kao, W. H. ; Francis, Lesley ; Alani, Rhoda M. ; Smith, Michael W. ; Strickland, Paul Timothy. / DNA repair gene variants in relation to overall cancer risk : A population-based study. In: Carcinogenesis. 2013 ; Vol. 34, No. 1. pp. 86-92.
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