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Prepublished online as a Blood First Edition Paper on April 3, 2003; DOI 10.1182/blood-2002-12-3803.
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Blood, 1 August 2003, Vol. 102, No. 3, pp. 1007-1011
NEOPLASIA
Gastric marginal zone lymphoma is associated with polymorphisms in genes involved in inflammatory response and antioxidative capacity
Sara Rollinson,
Adam P. Levene,
Fiona K. Mensah,
Philippa L. Roddam,
James M. Allan,
Tim C. Diss,
Eve Roman,
Andrew Jack,
Kenneth MacLennan,
Michael F. Dixon, and
Gareth J. Morgan
From the Epidemiology and Genetics Unit, University of Leeds; the Molecular Biology Unit, Histopathology Department, Royal Free and University College Medical School, London; and the Academic Unit of Pathology, University of Leeds, United Kingdom
Gastric marginal zone lymphoma (GMZL) is strongly associated with Helicobacter pylori infection, which induces a chronic inflammatory response. Inflammation can result in DNA damage related to its severity, the cellular antioxidant capacity, and the integrity of DNA repair mechanisms. Interleukin-1 (IL-1) polymorphisms have been shown to be important mediators of inflammation, while glutathione S-transferase GST T1 and GST M1 polymorphisms are believed to affect cellular antioxidant capacity. We aimed to determine whether polymorphisms at the IL-1 and GST T1 and GST M1 loci modulate the risk of developing GMZL. Blood and biopsy samples were obtained for a historical series of 66 GMZL cases, whereas blood samples were available from 163 healthy controls. Genotypes were obtained for GST T1, GST M1, IL-1 RN, and IL-1B-31 using PCR-based techniques. H pylori infection was found in 86.0% of cases, whereas in the control population only 37.4% tested positive. The IL-1 RN 2/2 genotype was significantly associated with risk of GMZL (odds ratio [OR], 5.51; 95% confidence interval [CI] 2.16-14.07), but not the IL-1B-31 genotype. Likewise, the GST T1 null genotype was strongly associated with risk of GMZL (OR, 9.51; 95% CI 4.57-19.81), but not the GST M1 genotype. Evidence was found of effect modification between the IL-1 RN and GST T1 genotypes (P =.02). The combination of the IL-1 RN 2/2 and GST T1 null genotype was most strongly associated with risk of GMZL (OR, 32.29; 95% CI 6.92-150-63). These results support the hypothesis that the risk of developing GMZL is influenced by inter-individual variation in the cellular inflammatory immune responses to H pylori infection, and to antioxidative capacity.
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