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Frequency of autoantibodies and correlation with HLA-DRB1 genotype in sporadic inclusion body myositis (s-IBM): A population control study

Rojana-udomsart, A., Bundell, C., James, I., Castley, A., Martinez, P., Christiansen, F., Hollingsworth, P. and Mastaglia, F. (2012) Frequency of autoantibodies and correlation with HLA-DRB1 genotype in sporadic inclusion body myositis (s-IBM): A population control study. Journal of Neuroimmunology, 249 (1-2). pp. 66-70.

Link to Published Version: http://dx.doi.org/10.1016/j.jneuroim.2012.04.007
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Abstract

The frequency of myositis-associated and myositis-specific autoantibodies (AAb) was compared in 51 s-IBM patients and a population control group. Non-organ specific AAb (ANA, anti-Ro52, anti-Ro60, anti-La, anti-RNP) but not anti-thyroid peroxidase, anti-tissue transglutaminase or myositis-specific antibodies, were more frequent in s-IBM patients, and 14/51 (27%) had another autoimmune disease (Sjögren's syndrome, thyroiditis, psoriasis, vitiligo). The presence of AAb did not correlate with carriage of HLA-DRB1*0301, but there was a negative correlation between ANA/anti-Ro52 and carriage of HLA-DRB1*1301. The findings in this cohort confirm that patients with sIBM do not show evidence of a muscle-specific humoral immune process but have an increased frequency of non-organ specific AAb and other autoimmune disorders.

Publication Type: Journal Article
Murdoch Affiliation: Centre for Clinical Immunology and Biomedical Statistics
Publisher: Elsevier
Copyright: © 2012 Elsevier B.V
URI: http://researchrepository.murdoch.edu.au/id/eprint/9770
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