Aim: To investigate the association between common single nucleotide polymorphisms (SNPs) in inflammatory response-related genes such as interleukin (IL)-6, IL-8, tumor necrosis factor alpha (TNFalpha), peroxisome proliferators-activated receptor gamma (PPARgamma), intercellular adhesion molecule-1 (ICAM-1) and the risk of colorectal cancer (CRC) in a group of Greek patients.
Methods: The study group consisted of 222 CRC patients and 200 healthy controls. Genotyping was performed using allele-specific PCR of PRC-RFLP and the results were confirmed by sequencing. We studied the association of SNPs in the IL-6 (-174G>C), IL-8 (-251T>A), TNFalpha (-308G>A), ICAM-1 (R241G and K469E), and PPARgamma (Pro12Ala) genes and the risk of CRC.
Results: The IL-6 -174G, R241 and K469 alleles of ICAM-1 were associated with increased risk of CRC (OR = 1.77, 95% CI: 1.34-2.34; OR = 1.83, 95% CI: 1.23-2.72; and OR = 1.35, 95% CI: 1.03-1.77 respectively). The IL-8 and TNFalpha polymorphisms had no effect. Whereas the PPARgamma Pro12 genotype was associated with increased risk of disease (OR = 1.78, 95% CI: 1.25-2.49).
Conclusion: The association between common SNPs in immunologic response-related genes and CRC is reported in the present study. Apart from shedding light on the mechanisms of malignancy initiation and progression, SNPs may improve appropriate screening for sub-populations at risk.
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| http://dx.doi.org/10.3748/wjg.v12.i31.5037 | DOI Listing |
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