We aimed to evaluate association of cytokine genes polymorphisms with psoriasis in the Korean population.
We investigated the polymorphisms of IL-2 −330, IL-4 −590, IL-4 receptor +1902, IL-10 −1082 and −819, and IFN-γ intron 1 in 114 psoriasis patients and 281 healthy normal controls in Korean.
IL-2 −330*G and IL-4 −590*C alleles significantly increased in psoriasis patients, especially late-onset group, compared to the control. The combined effect of IL-2 −330*G and IL-4 −590*C showed that the positive combination of IL-2 −330*G and IL-4 −590*C alleles were more significantly associated with the late-onset group of psoriasis patients than the controls.
These results suggest that the genetic polymorphisms of IL-2 and IL-4 genes can be susceptible to psoriasis in Korean, especially late-onset psoriasis group.