Abstract
Recently identified and well-characterized myositis-specific autoantibodies (MSAs) include anti-transcription intermediary factor 1γ (TIF1-γ), anti-nuclear matrix protein 2 (NXP2), and anti-melanoma differentiation-associated gene 5 (MDA5). These antibodies are found in juvenile and adult patients with dermatomyositis (DM) with severe cutaneous involvement in the presence or absence of clinically apparent myositis. Anti-TIF1-γ and anti-NXP2 are associated with concomitant malignancy in adult patients, especially older individuals, and have no link to interstitial lung disease (ILD). On the other hand, patients with anti-MDA5 antibody frequently have ILD, which is often rapidly progressive, in both juvenile and adult patients. These MSAs have unique clinical and prognostic features and may be seen in amyopathic DM. Therefore, their identification is useful for predicting future clinical manifestations and outcomes.
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Gono, T., Kuwana, M. (2020). Dermatomyositis-Associated Autoantibodies: TIF1-γ, NXP2, and MDA5. In: Aggarwal, R., Oddis, C. (eds) Managing Myositis. Springer, Cham. https://doi.org/10.1007/978-3-030-15820-0_21
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DOI: https://doi.org/10.1007/978-3-030-15820-0_21
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