Abstract：
:Sarcoidosis is a multisystem granulomatous disorder of unknown etiology. Hereditary etiology has been proposed as a cause of the sarcoidosis, and some Human Leucocyte Antigen (HLA) alleles have been related to the diagnosis or severity of the disease. Löfgren's syndrome has been linked to patients with the DRB1*03 allele, and non-resolving disease has been associated with the DRB1*07, DRB1*14 and DRB1*15 alleles. However, the results observed in Caucasian patients are not reproducible in other populations, such as in Japanese individuals. The aim of this study is to examine the HLA alleles in Brazilian patients with sarcoidosis confirmed by biopsy. Sixty-three patients were included in the study, and the HLA alleles were compared with 126 control individuals. HLA-A, -B, -C, -DRB1 and -DQB1 genes were typed using a Luminex Multi-analyte profiling system (One Lambda, Inc. Canoga Park, CA). Among sarcoidosis patients, the HLA A*23, A*80, B*08, B*41, DQB1*05 and DRB1*14 antigens tended to be more common than in the controls, whereas the B*44, B*45, B*51, B*58, DRB1*15 and DRB1*16 alleles were more frequently found in control subjects than in the sarcoidosis patients. However, after Bonferroni correction, only the HLA-DRB1*14 allele was found to be significantly different between sarcoidosis patients and controls (pC=0.0047, OR=11.69, CI=2.47-55.22). This allele was more frequent in mestizos and black patients. The presence of an HLA-DRB1*14 allele might determine the risk of sarcoidosis in Brazilian individuals, especially in mestizos and black patients.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
da Costa CH,Silva VL,Fabricio-Silva GM,Usnayo M,Rufino R,Porto LCdoi
10.1016/j.humimm.2013.07.009subject
Has Abstractpub_date
2013-10-01 00:00:00pages
1326-32issue
10eissn
0198-8859issn
1879-1166pii
S0198-8859(13)00210-3journal_volume
74pub_type
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