Interleukin-4 cytokine single nucleotide polymorphisms in kawasaki disease: a case-control study and a review of
Raheleh Assari1,2, Yahya Aghighi3, Vahid Ziaee1,2
1Pediatric Rheumatology Research Group, Rheumatology Research Center, Tehran, Iran.
Aim:
Kawasaki disease (KD) is a systemic vasculitis of medium-sized arteries. High levels of interleukin 4 (IL-4) and the dominance of Th2 cytokines seem to be a key feature in the acute phase of KD. In this study, the role of IL-4 and IL-4R gene polymorphisms were investigated in Iranian children with KD.
Methods:
Fifty-five patients with KD and 140 healthy subjects as a control group were enrolled in this study. Single nucleotide polymorphisms (SNPs) of IL-4 gene at positions -1098 (rs2243248), -590 (rs2243250) and -33 (rs2070874), as well as IL-4RA gene at position +1902 (rs180275) were assessed in patients and the control group.
Results:
The C allele and CC genotype of IL-4 gene at position -590 and at position -33 had positive associations and the CT genotype at -590 was negatively associated with KD (odds ratio (95% CI) = 0.04 [0.01-0.09]). The haplotype TCC was more frequent among the patients, while the haplotypes TTT and TTC had a negative association with KD.
Conclusion:
IL-4 polymorphisms might be associated with KD in an Iranian population.
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