Key clinical point: Atopic dermatitis (AD) is not associated with an overall increased risk for malignancy in children and adults; however, the risk for lymphoma is significantly higher in both children and adults with severe AD.
Major finding: The risk for overall malignancy was similar between the AD and non-AD groups of children (adjusted hazard ratio [aHR] 1.02; 95% CI 0.92-1.12) and adults (aHR 1.00; 95% CI 0.99-1.02); however, the risk for lymphoma (non-cutaneous T-cell type) was significantly higher in children (aHR 3.18; 95% CI 1.41-7.16) and adults (aHR 1.95; 95% CI 1.62-2.36) with severe AD.
Study details: This population-based cohort study included matched children (<18 years) with (n = 409,431) and without (n = 1,809,029) AD and matched adults with (n = 625,083) and without (n = 2,678,888) AD.
Disclosures: This study was funded by Pfizer, Inc. Some authors declared receiving research grants, consulting fees, or honoraria from Pfizer, Inc., and others. AR Lemeshow declared being an employee of Pfizer, Inc.
Source: Wan J et al. Malignancy risk in patients with atopic dermatitis: A population-based cohort study. Br J Dermatol. 2023;189(1):53-61 (Jul 7). Doi: 10.1093/bjd/ljad072