Journal
HUMAN IMMUNOLOGY
Volume 74, Issue 12, Pages 1633-1635Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.humimm.2013.08.271
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Funding
- Turkish Research Council [TUBITAK SBAG 109S353]
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Susceptibility to myasthenia gravis (MG) has been demonstrated with several HLA in different disease subgroups. HLA-DR14, -DR16 and -DQ5 were reported as predisposing factors in muscle-specific kinase antibody positive MG (MuSK-MG). These markers were evaluated in MG subgroups from Turkey. Among 164 generalized MG patients, 116 had antibodies against anti-acetylcholine receptor (AChR-MG) and 48 had MuSK-MG. Only HLA-DRB1 and DQB1 allele groups reported to be associated with MuSK-MG were compared with 250 healthy controls (HC). Highly significant associations of both DRB1*16 and DRB1*14 were found with MuSK-MG compared to HC (p = 1.9 x 10(-5), OR: 4.95 and p = 0.0028, OR: 3.1). On the contrary, HLA-DRB1*03 was less frequent in MuSK-MG (p = 0.006, OR: 0.09). DQB1*05 was also associated with MuSK-MG (p = 2.5 x 10(-6) OR: 4.8). This study provides a replication of the highly significant associations of both HLA-DRB1*16,-DRB1*14 and -DQB1*05 with MuSK-MG. Moreover, HLA-DRB1*03 appears to have a distinguishing role for this disease subgroup compared to early-onset and AChR-MG. (C) 2013 American Society for Histocompatibility and Immunogenetics. Published by Elsevier Inc. All rights reserved.
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