خلاصه: Aim: Kawasaki disease (KD) is a systemic vasculitis of children associated with cardiovascular sequelae. Proinflammatory cytokines play a major role in KD pathogenesis. However, their role is both influenced and modified by regulatory T-cells. IL-1 gene cluster, IL-6 and TNF-a polymorphisms have shown significant associations with some vasculitides. Herein we investigated their role in KD. Methods: Fifty-five patients with KD who were randomly selected from referrals to the main pediatric hospital were enrolled in this case-control study. Single nucleotide polymorphisms (SNPs) of the following genes were assessed in patients and 140 healthy subjects as control group: IL-1a at 889 (rs1800587), IL-1b at 511 (rs16944), IL-1b at +3962 (rs1143634), IL-1R at Pst-I 1970 (rs2234650), IL-1RN/A at Mspa-I 11100 (rs315952), TNF-a at 308 (rs1800629), TNF-a at -238, IL-6 at 174 (rs1800795) and IL-6 at +565. Results: Twenty-one percent of the control group had A allele at TNF-a 238 while only