Association Study and Fine-Mapping Major Histocompatibility Complex Analysis of Pemphigus Vulgaris in a Han Chinese Population. 2018

Jinping Gao, and Caihong Zhu, and Yaohua Zhang, and Yujun Sheng, and Fanping Yang, and Wenjun Wang, and Wenjun Qian, and Sheng'an Chen, and Qinyuan Zhu, and Xianbo Zuo, and Huayang Tang, and Xianfa Tang, and Yang Li, and Hui Cheng, and Fusheng Zhou, and Shengxiu Liu, and Gang Chen, and Xiaodong Zheng, and Zhengwei Zhu, and Zaixing Wang, and Sen Yang, and Xiaoqun Luo, and Dongqing Ye, and Xuejun Zhang, and Liangdan Sun
Department of Dermatology, the First Affiliated Hospital, Anhui Medical University, Hefei, Anhui Province, China; Key Laboratory of Dermatology, Anhui Medical University, Ministry of Education, China, Hefei, Anhui Province, China; State Key Lab of Dermatology Incubation Center, Anhui Medical University, Hefei, Anhui Province, China.

To identify possible additional genetic susceptibility loci for pemphigus vulgaris (PV), we performed a genome-wide association study of 240 PV patients and 1,031 control individuals, and we selected the top single nucleotide polymorphisms for replication in independent samples, with 252 patient samples and 1,852 control samples. We identified rs11218708 (P = 3.1 × 10-8, odds ratio = 1.54) at chromosome locus 11q24.1 as significantly associated with PV. A fine-mapping analysis of PV risk in the major histocompatibility complex region showed three independent variants predisposed to PV using stepwise analysis: HLA-DRB1*14:04 (P = 2.47 × 10-38, odds ratio = 6.28), rs7454108 at the TAP2 gene (P = 2.78 × 10-12, odds ratio = 3.25), and rs1051336 at the HLA-DRA gene (P = 3.06 × 10-6, odds ratio = 0.33). A systematic evaluation using gene- and pathway-based analyses showed a high tendency for PV susceptibility genes to be associated with autoimmunity. Our study highlights the involvement of immune-mediated processes in the pathophysiology of PV and illustrates the value of imputation to identify variants in the major histocompatibility complex region.

UI MeSH Term Description Entries
D008285 Major Histocompatibility Complex The genetic region which contains the loci of genes which determine the structure of the serologically defined (SD) and lymphocyte-defined (LD) TRANSPLANTATION ANTIGENS, genes which control the structure of the IMMUNE RESPONSE-ASSOCIATED ANTIGENS, HUMAN; the IMMUNE RESPONSE GENES which control the ability of an animal to respond immunologically to antigenic stimuli, and genes which determine the structure and/or level of the first four components of complement. Histocompatibility Complex,Complex, Histocompatibility,Complex, Major Histocompatibility,Complices, Histocompatibility,Complices, Major Histocompatibility,Histocompatibility Complex, Major,Histocompatibility Complices,Histocompatibility Complices, Major,Major Histocompatibility Complices
D008297 Male Males
D010392 Pemphigus Group of chronic blistering diseases characterized histologically by ACANTHOLYSIS and blister formation within the EPIDERMIS. Pemphigus Vulgaris,Pemphigus Foliaceus,Foliaceus, Pemphigus
D002681 China A country spanning from central Asia to the Pacific Ocean. Inner Mongolia,Manchuria,People's Republic of China,Sinkiang,Mainland China
D005260 Female Females
D005787 Gene Frequency The proportion of one particular in the total of all ALLELES for one genetic locus in a breeding POPULATION. Allele Frequency,Genetic Equilibrium,Equilibrium, Genetic,Allele Frequencies,Frequencies, Allele,Frequencies, Gene,Frequency, Allele,Frequency, Gene,Gene Frequencies
D005838 Genotype The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS. Genogroup,Genogroups,Genotypes
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000071450 ATP Binding Cassette Transporter, Subfamily B, Member 3 ATP-binding cassette, subfamily B, protein that functions in the transport of ANTIGENS from the CYTOPLASM to the ENDOPLASMIC RETICULUM for association with HISTOCOMPATIBILITY ANTIGENS CLASS I peptides. It functions as a heterodimer with ATP BINDING CASSETTE TRANSPORTER, SUBFAMILY B, MEMBER 2. ABCB3 Protein,ATP Binding Cassette Transporter, Sub-Family B, Member 3,ATP-Binding Cassette, Sub-Family B, Member 3,Antigen Peptide Transporter-2,Peptide Supply Factor 2,Peptide Transporter Tap2,Antigen Peptide Transporter 2,Tap2, Peptide Transporter
D012306 Risk The probability that an event will occur. It encompasses a variety of measures of the probability of a generally unfavorable outcome. Relative Risk,Relative Risks,Risk, Relative,Risks,Risks, Relative

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