title: Association of HLA class I alleles with keloids in Chinese Han individuals.
abstract: Keloids are benign fibroproliferative dermal tumors of unknown etiology. Some studies have suggested that human HLA status might potentiate development of keloids phenotype. No report has been published about HLA class I alleles associated with keloids in Chinese Han individuals. To investigate the etiology of keloids, the polymerase chain reaction-sequence-specific primer (PCR-SSP) method was used to analyze the distribution of HLA class I alleles in 192 patients with keloids and 252 healthy controls in a Chinese Han population. The frequencies of HLA-A*03 (6.77% vs 0%, p(c) < 10(-7)), A*25 (10.16% vs 4.56%, p(c) = 0.0111), B*07 (7.81% vs 2.58%, p(c) = 0.0080), and Cw*0802 (19.79% vs 10.32%, p(c) = 0.0004) were significantly increased in keloid patients, whereas the frequency of HLA-A*01 (18.75% vs 38.10%, p(c) < 10(-7)) was highly decreased, compared with that in healthy controls. The A*03-B*07, A*25-B*07, A*03-Cw*0802, A*25-Cw*0802, and B*07-Cw*0802 were found as high-risk haplotypes in developing keloids in this study. No extended haplotype was found to be significantly related to keloids. Through stratified analysis, the association of subgroups (single site/multiple site, severity, and family history) of keloid patients with specific HLA alleles was identified. Our data suggest these alleles may be keloids susceptibility genes or may be in close linkage with the susceptibility genes.
authors.affiliation: Department of Dermatology, Medical University, Hefei, Anhui, China.
authors.forename: Wen-Sheng
authors.initials: WS
authors.lastname: Lu
authors.forename: Li-Qiong
authors.initials: LQ
authors.lastname: Cai
authors.forename: Zai-Xing
authors.initials: ZX
authors.lastname: Wang
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.forename: Jian-Feng
authors.initials: JF
authors.lastname: Wang
authors.forename: Feng-Li
authors.initials: FL
authors.lastname: Xiao
authors.forename: Cheng
authors.initials: C
authors.lastname: Quan
authors.forename: Su-Min
authors.initials: SM
authors.lastname: He
authors.forename: Sen
authors.initials: S
authors.lastname: Yang
authors.forename: Xue-Jun
authors.initials: XJ
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D002681:China; D004252:DNA Mutational Analysis; D018450:Disease Progression; D005260:Female; D005787:Gene Frequency; D056726:Genetic Association Studies; D020022:Genetic Predisposition to Disease; D006680:HLA Antigens / Q000235:genetics*; D006801:Humans; D007627:Keloid / Q000235:genetics* / Q000473:pathology / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic
chemical_list: D006680:HLA Antigens