Journal
AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE
Volume 169, Issue 6, Pages 696-702Publisher
AMER THORACIC SOC
DOI: 10.1164/rccm.200303-459OC
Keywords
human leukocyte antigen; sarcoidosis; prognosis
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Several lines of evidence suggest a genetic predisposition to sarcoidosis, and strong associations have been shown with the major histocompatibility complex gene complex. In this study on Scandinavian sarcoidosis patients, we investigated any influence on the outcome of disease by human leukocyte antigen (HILA) class I alleles alone and in combination with selected class 11 alleles. HLA-B*07 independently increased the risk for persistent sarcoidosis (odds ratio [OR], 1.9; 95% confidence interval [CI], 1.0-3.7), as well as for resolving disease (OR, 2.7; Cl, 1.1-6.2), suggesting an influence on factors common to both forms of sarcoidosis. The common allele combination A*03, B*07, DRB1*15 was most strongly associated with persistent disease (OR, 4.7; Cl, 2.2-10.2) and was found in 25.3% of patients with persistent disease versus 7.1% of healthy control subjects. HLA-B*08 tended to increase separately the risk for resolving disease (OR, 2.4; Cl, 0.7-8.0), as well as for persistent disease (OR, 2.2; Cl, 0.8-6.1). Other HLA class I associations were mainly secondary to their linkages to DRB1*03 and DRB1*15, respectively. The influence of HILA class I alleles on sarcoidosis thus seems more pronounced than previously thought, and both HLA class I and class 11 should be relevant to evaluate in the clinical management of sarcoidosis patients.
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