Carriers of the IL10 T allele (rs1554286) and the IL20 T allele (rs1400986) conferred protection from psoriasis [odds ratio (OR) = 0·63, corrected P-value (Pc) = 0·007; OR = 0·62, Pc = 0·038, respectively].
In our previous study, a single-nucleotide polymorphism (SNP) of IL-20-1723CG (rs1713239) was found to be associated with psoriasis progression, especially in those induced by upper respiratory tract infection.