IL33 and Pruritus: When we classified disease activity status by the scores of UAS7 as mild or moderate and severe, no significant association was found between the disease activity status and IL-33 rs1929992 gene polymorphism (Fisher’s exact test, p = 0.5451), the frequency distribution of variant GA genotype being similar in patients with severe forms of pruritus (32, 65.6%) or mild/moderate forms of pruritus (16, 56.2%).