HLA class II alleles may influence susceptibility to adult dermatomyositis and polymyositis in a Han Chinese population

BMC Family Practice

Liming Bao³  Ling Lu¹  Hengjuan Sun⁴  Guimei Gou⁴  Yongchen Yang⁴  Lan Yuan²  Lei Han¹  Xiang Gao¹ 

[1] Departments of Rheumatology and Occupational Medicine, Huashan Hospital of Fudan University, Shanghai, China;Chongqing International Science and Technology Cooperation Center for Child Development and Disorders, Children’s Hospital of Chongqing Medical University, Chongqing, China;Department of Pathology, Geisel School of Medicine at Dartmouth College, Lebanon, New Hampshire, USA;Shanghai Children’s Hospital, Shanghai Children’s Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China

关键词: Chinese;    Susceptibility;    HLA;    Dermatomyositis;    Polymyositis;   

Others  :  855008
DOI  :  10.1186/1471-5945-14-9

 received in 2013-11-18, accepted in 2014-05-28,  发布年份 2014

【 摘 要 】

Background

Polymyositis (PM) and dermatomyositis (DM) are idiopathic inflammatory myopathies. Genetic variability in human leukocyte antigen (HLA) genes plays an important role in the pathogenesis of PM and DM. However, few studies on the subject in Chinese populations have been reported thus far.

Methods

We studied the influence of HLA polymorphisms on DM and PM susceptibility by analyzing HLA-DRB1, HLA-DQA1, and HLA-DQB1 alleles in 71 adult DM patients, 20 adult PM patients, and 113 controls in a Han Chinese population.

Results

A positive association was found between HLA-DQA1*0104 and DM (p = 0.01; corrected p (p_corr) NS; odds ratio (OR) = 2.58; 95% confidence interval (CI): 1.18–5.64), while an inverse correlation was noted between HLA-DQB1*0303 and myositis patients with interstitial lung inflammation (p = 0.01; p_corr NS; OR = 0.25; 95% CI: 0.07–0.73). A positive relationship was also observed between HLA-DRB1*07 and DM (p = 0.01; p_corr NS; OR = 2.26; 95% CI: 1.12–4.59), while HLA-DRB1*03 seems to be protective against DM (p = 0.01; p_corr NS; OR = 0.26; 95% CI: 0.06–0.81). The lung complication was closely associated with HLA-DRB1*04 (p = 0.01; p_corr NS; OR = 2.82; 95% CI: 1.15–6.76) and HLA-DRB1*12 (p = 0.02; p_corr NS; OR = 2.52; 95% CI: 1.02–6.07). The frequency of HLA-DRB1*07 was significantly higher among myositis patients with dysphagia than among controls (p = 0.01; p_corr NS; OR = 4.78; 95% CI: 1.03–24.42). The putative haplotype DRB1*07-DQA1*01-DQB1*02 was positively correlated with DM (p = 0.03; p_corr NS; OR = 2.90; 95% CI: 1.02–8.93) and the lung complication (p = 0.02; p_corr NS; OR = 3.45; 95% CI: 1.04–11.58).

Conclusions

Our results demonstrate that HLA alleles may be involved in susceptibility to adult DM and PM in the Han Chinese population.

【 授权许可】

   
2014 Gao et al.; licensee BioMed Central Ltd.

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