Genome-wide association study identifies eight new susceptibility loci for atopic dermatitis in the Japanese population

Atopic dermatitis is a common inflammatory skin disease caused by interaction of genetic and environmental factors. On the basis of data from a genome-wide association study (GWAS) and a validation study comprising a total of 3,328 subjects with atopic dermatitis and 14,992 controls in the Japanese population, we report here 8 new susceptibility loci: IL1RL1-IL18R1-IL18RAP (P-combined = 8.36 x 10(-18)), the major histocompatibility complex (MHC) region (P = 8.38 x 10(-20)), OR10A3-NLRP10 (P = 1.54 x 10(-22)), GLB1 (P = 2.77 x 10(-16)), CCDC80 (P = 1.56 x 10(-19)), CARD11 (P = 7.83 x ZNF365 (P = 5.85 x 10(-20)) and CYP24A1-PFDN4 (P = 1.65 x 10(-8)). We also replicated the associations of the FLG, C11orf30, TMEM232-SLC25A46, TNFRSF6B-ZGPAT, OVOL1, ACTL9 and KIF3A-IL13 loci that were previously reported in GWAS of European and Chinese individuals and a meta-analysis of GWAS for atopic dermatitis. These findings advance the understanding of the genetic basis of atopic dermatitis.