Single nucleotide polymorphisms in IL-4Ra, IL-13 and STAT6 genes occurs in brain glioma.

Gliomas are aggressive brain tumor. Association studies were consistent for an inverse association between asthma and allergic conditions (IgE levels) and risk of glioma. Studies reported that the IL-4Ra, IL-13 and STAT6 genes played a relatively strong role in IgE production or allergy. This population-based case-control study aimed to find potential association between single nucleotide polymorphisms IL-13rs20541, IL-4Rars1801275 and glioma susceptibility in population, as well as STAT6 rs1059513 and STAT6 rs324015. Among non-smokers, homozygote GG of STAT6 4610A/G showed an increased association with risk of glioma compared with AA (adjusted OR=1.691, 95%CI=1.152-2.481, p=0.007, corrected p=0.028), and the haplotype with A allele at rs1059513 and G allele at rs324015 was revealed to increase glioma risk significantly (OR=1.321,95%CI= 1.081-1.614, p=0.007,corrected p=0.028). GG genotype of STAT6 4610A/G was a significant risk factor compared with AA in glioblastoma (adjusted OR=1.856, 95%CI=1.153-2.987, p=0.011, corrected p=0.044). GG of STAT6 4610A/G was significantly related to increased WHO IV risk compared with AA (adjusted OR=1.591,95%CI=1.030-2.459, p=0.036, corrected p=0.144). Interaction between IL-13 Arg130Gln and IL-4Ra Gln576Arg was observed in decreasing glioma risk (p=0.045).