Carcinogenesis Advance Access published online on October 4, 2007
Carcinogenesis, doi:10.1093/carcin/bgm210
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Published by Oxford University Press 2007.
Single nucleotide polymorphisms in selected cytokine genes and risk of adult glioma
1 Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS
2 Division of Applied Research and Technology, National Institute for Occupational Safety and Health, CDC, DHHS
3 Division of Surveillance, Hazard Evaluations and Field Studies, National Institute for Occupational Safety and Health, CDC, DHHS
4 Education and Information Division, National Institute for Occupational Safety and Health, CDC, DHHS
5 Core Genotyping facility, Advanced Technology Corp., National Cancer Institute, NIH, DHHS
6 Neurooncology Branch, Center for Cancer Research, National Cancer Institute, NIH, DHHS
* Corresponding author: Radiation Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, NIH, DHHS, 6120 Executive blvd., EPS 7090, Bethesda, MD 20892-7238, Tel: (301) 402-8680, Fax: (301) 402-0207, e-mail: brennera{at}mail.nih.gov
A role of immunological factors in glioma etiology is suggested by reports of an inverse relationship with history of allergy or autoimmune disease. To test whether single nucleotide polymorphisms (SNPs) in cytokine genes were related to risk of adult glioma, we genotyped eleven SNPs in seven cytokine genes within a hospital-based study conducted by the National Cancer Institute and an independent, population-based study by the National Institute for Occupational Safety and Health (overall 756 cases and 1,190 controls with blood samples). The IL4 (rs2243248, -1098T>G) and IL6 (rs1800795, -174G>C) polymorphisms were significantly associated with risk of glioma in the pooled analysis (P trend=0.006 and 0.04, respectively), although these became attenuated after controlling for the false discovery rate (P trend=0.07 and 0.22, respectively). Our results underscore the importance of pooled analyses in genetic association studies and suggest that SNPs in cytokine genes may influence susceptibility to glioma.
Received June 14, 2007; revised August 24, 2007; accepted September 12, 2007.
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