title: Genetic polymorphisms in the oxidative stress pathway and susceptibility to non-Hodgkin lymphoma.
abstract: Oxidative damage caused by reactive oxygen species (ROS) and other free radicals is involved in a number of pathological conditions including cancer. In a population-based case-control study of non-Hodgkin lymphoma (NHL) (n = 518 cases, 597 controls) among women in Connecticut, we analyzed one or more single nucleotide polymorphisms (SNPs) in ten candidate genes (AKR1A1, AKR1C1, AKR1C3, CYBA, GPX1, MPO, NOS2A, NOS3, OGG1, and SOD2) that mediate oxidative stress directly or indirectly in the NADPH oxidase-dependent respiratory burst. Odds ratios (OR) and 95% confidence intervals (CI) were adjusted for age and race. Polymorphisms in AKR1A1 and CYBA were significantly associated with increased risk of NHL. There was a 1.7-fold (95% CI = 1.2-2.4, P = 0.0047) increased risk of NHL for individuals who were variant homozygous for the AKR1A1 (IVS5 + 282T > C) SNP. The effect was most pronounced for risk of diffuse large B-cell lymphoma, but risk estimates were non-significantly elevated for other common B-cell histologies and T-cell lymphomas as well. In addition, individuals variant homozygous for the CYBA (Ex4 + 11C > T) SNP had a 1.6-fold (95% CI = 1.1-2.4, P = 0.019) increased risk of NHL that was particularly pronounced for T-cell lymphoma (OR = 3.5, 95% CI = 1.3-9.6, P = 0.013), but was also associated with non-significant increased risks for each of the common B-cell histologies. These results suggest that SNPs in genes related to the oxidative stress pathway may be associated with increased risk of NHL.
authors.affiliation: Occupational and Environmental Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, EPS 8109, Bethesda, MD 20892-7240, USA. qingl@mail.nih.gov
authors.forename: Qing
authors.initials: Q
authors.lastname: Lan
authors.forename: Tongzhang
authors.initials: T
authors.lastname: Zheng
authors.forename: Min
authors.initials: M
authors.lastname: Shen
authors.forename: Yawei
authors.initials: Y
authors.lastname: Zhang
authors.forename: Sophia S
authors.initials: SS
authors.lastname: Wang
authors.forename: Shelia H
authors.initials: SH
authors.lastname: Zahm
authors.forename: Theodore R
authors.initials: TR
authors.lastname: Holford
authors.forename: Brian
authors.initials: B
authors.lastname: Leaderer
authors.forename: Peter
authors.initials: P
authors.lastname: Boyle
authors.forename: Stephen
authors.initials: S
authors.lastname: Chanock
mesh_terms: D000328:Adult; D000368:Aged; D016022:Case-Control Studies; D005260:Female; D020022:Genetic Predisposition to Disease; D006579:Heterozygote; D006720:Homozygote; D006801:Humans; D008228:Lymphoma, Non-Hodgkin / Q000235:genetics* / Q000378:metabolism; D008875:Middle Aged; D016017:Odds Ratio; D018384:Oxidative Stress; D011110:Polymorphism, Genetic; D020641:Polymorphism, Single Nucleotide; D012306:Risk