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PLoS By Category | Recent PLoS Articles
Dermatology - Immunology - Respiratory Medicine

Association Analysis of Single Nucleotide Polymorphisms at Five Loci: Comparison between Atopic Dermatitis and Asthma in the Chinese Han Population
Published: Tuesday, April 24, 2012
Author: Hua-Yang Tang et al.

by Hua-Yang Tang, Xian-Fa Tang, Xian-Bo Zuo, Jin-Ping Gao, Yu-Jun Sheng, Yang Li, Fu-Sheng Zhou, Xian-Yong Yin, Feng-Li Xiao, Wei-Dong Du, Sen Yang, Liang-Dan Sun, Xue-Jun Zhang

Atopic diseases, such as atopic dermatitis (AD) and asthma, are closely related to clinical phenotypes with hypersensitivity, and often share some similar genetic and pathogenic bases. Our recent GWAS identified three susceptibility gene/loci FLG (rs11204971 and rs3126085), 5q22.1 (rs10067777, rs7701890, rs13360927 and rs13361382) and 20q13.33 (rs6010620) to AD. The effect of these AD associated polymorphisms in asthma is so far unknown. To investigate whether AD relevant genetic variants is identical to asthma and reveal the differences in genetic factors between AD and asthma in Chinese Han population, seven AD associated single nucleotide polymorphisms (SNPs) as well as 3 other SNPs (rs7936562 and rs7124842 at 11q13.5 and rs4982958 at 14q11.2) from our previous AD GWAS were genotyped in 463 asthma patients and 985 controls using Sequenom MassArray system. We found rs4982958 at 14q11.2 was significantly associated with asthma (P?=?3.04×10-4, OR?=?0.73). We also detected one significant risk haplotype GGGA from the 4 SNPs (rs10067777, rs7701890, rs13360927 and rs13361382) at 5q22.1 in AD cases (Pcorrection?=?3.60×10-10, OR?=?1.26), and the haplotype was suggestive of risk in asthma cases in this study (P?=?0.014, Pcorrection?=?0.084, OR?=?1.38). These SNPs (rs11204971, rs3126085, rs7936562, rs712484 and rs6010620) at AD susceptibility genes/loci FLG, 11q13.5 and 20q13.33 were not associated with asthma in this study. Our results further comfirmed that 14q11.2 was an important candidate locus for asthma and demonstrated that 5q22.1 might be shared by AD and asthma in Chinese Han population.