Galimova et al., [30] analyzed 48 polymorphisms in 377 patients with psoriasis and 403 healthy controls and reported that the rs1400986 T allele was associated with decreased risk of psoriasis and that the combination of IL10 rs1554286 and IL20 rs1518108 was associated also with a reduced risk of presenting this disease. This evidence concerns the gene IL20 and psoriasis.