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  • Title: Gene-gene interactions between interleukin-12A and interleukin-12B with the risk of brain tumor.
    Author: Sima X, Xu J, Li Q, Luo L, Liu J, You C.
    Journal: DNA Cell Biol; 2012 Feb; 31(2):219-23. PubMed ID: 22011063.
    Abstract:
    Emerging evidence from preclinical and clinical studies has shown that interleukin-12 (IL-12) has some effectiveness against endogenously arising brain tumor. The aim of this study was to investigate interactions of IL-12A and IL-12B polymorphisms on the risk of brain tumor. We analyzed IL-12A rs2243115 and IL-12B rs3212227 polymorphisms in 170 patients with brain tumor and 222 healthy controls in a Chinese population using a polymerase chain reaction-restriction fragment length polymorphism assay and DNA sequencing method. Individuals carrying a G allele of IL-12A rs2243115 had a significantly higher risk of developing brain tumor compared with those carrying a T allele (odds ratio [OR]=2.01, 95% confidence interval [CI], 1.17-3.45). After stratification analysis according to tumor types, a similarly higher risk was detected in patients with glioma (OR=2.56, 95% CI, 1.25-5.21). When gene-gene interactions were examined, carriers at both loci rs2243115 TG/GG and rs3212227 AC/CC had a 2.62-fold increased risk of glioma compared with those with rs2243115 TT and rs3212227 AC/CC genotypes (OR=2.62, 95% CI, 1.05-6.50). This study provides evidence that IL-12A rs2243115 may be associated with the risk of brain tumor. Additionally, gene-gene interactions of IL-12A rs2243115 and IL-12B rs3212227 may contribute to brain tumor susceptibility.
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