Four dermatomyositis-specific autoantibodies-anti-TIF1γ, anti-NXP2, anti-SAE and anti-MDA5-in adult and juvenile patients with idiopathic inflammatory myopathies in a Hungarian cohort

Levente Bodoki, Melinda Nagy-Vincze, Zoltán Griger, Zoe Betteridge, Lászlóné Szöllosi, K. Dankó

Research output: Contribution to journalArticle

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Abstract

Idiopathic inflammatory myopathies (IIMs) are chronic systemic autoimmune diseases characterised by symmetrical, proximal muscle weakness. Dermatomyositis represents one subset of IIMs, in which skin rashes are present in addition to muscle weakness. Myositis-specific antibodies can only be detected in myositis, and they are directed against specific proteins found in the cytoplasm or in the nucleus of cells. With this case-based article, we introduce the recently detected anti-TIF1γ, anti-NXP2, anti-SAE and anti-MDA5 antibodies that form various clinical groups. These antibodies could be detected in patients with dermatomyositis. The myositis-specific autoantibodies of three hundred and thirty-seven Hungarian patients with IIM were detected. Retrospective analysis of the clinical findings has also been introduced by revision of the medical history. We had twelve patients with anti-TIF1γ positivity, four patients with anti-NXP2 positivity and four patients with anti-SAE positivity. We did not have any positive anti-MDA5 patients. The most relevant clinical findings were similar to those seen in previously published reports. Eleven of the twelve patients with anti-TIF1γ positivity had classical dermatomyositis. Three of the twelve anti-TIF1γ patients had cancer during the disease progression. This was two out of four for the anti-NXP2 subgroup and one in four for the anti-SAE subgroup. In two juvenile dermatomyositis cases, typical ulceration was seen in patients with anti-TIF1γ positivity. The frequency of pulmonary fibrosis during the disease progression was 2/12, 1/4 and 1/4 in anti-TIF1γ, anti-NXP2 and anti-SAE, respectively. Other extra-muscular manifestations, such as arthralgia, dysphagia, dysphonia and dyspnoea, were also detectable. The myositis subgroups determined by these myositis-specific autoantibodies differ from each other in their symptoms, prognosis and therapy responsiveness. Their detection is helpful for the preparation of an adequate treatment, but in daily diagnostic methods, these antibodies cannot be detected. By presenting our anti-TIF1γ, anti-NXP2 and anti-SAE cases, we would like to highlight the clinical role of these antibodies.

Original languageEnglish
Pages (from-to)1211-1219
Number of pages9
JournalAutoimmunity Reviews
Volume13
Issue number12
DOIs
Publication statusPublished - Dec 1 2014

Fingerprint

Myositis
Dermatomyositis
Autoantibodies
Antibodies
Muscle Weakness
Disease Progression
transcriptional intermediary factor 1
Dysphonia
Pulmonary Fibrosis
Arthralgia
Deglutition Disorders
Exanthema
Cell Nucleus
Dyspnea
Autoimmune Diseases
Anti-Idiotypic Antibodies
Cytoplasm

Keywords

  • Anti-NXP2
  • Anti-SAE
  • Anti-TIF1γ
  • Idiopathic inflammatory myopathy
  • Myositis-specific autoantibodies

ASJC Scopus subject areas

  • Immunology
  • Immunology and Allergy
  • Medicine(all)

Cite this

Four dermatomyositis-specific autoantibodies-anti-TIF1γ, anti-NXP2, anti-SAE and anti-MDA5-in adult and juvenile patients with idiopathic inflammatory myopathies in a Hungarian cohort. / Bodoki, Levente; Nagy-Vincze, Melinda; Griger, Zoltán; Betteridge, Zoe; Szöllosi, Lászlóné; Dankó, K.

In: Autoimmunity Reviews, Vol. 13, No. 12, 01.12.2014, p. 1211-1219.

Research output: Contribution to journalArticle

Bodoki, Levente ; Nagy-Vincze, Melinda ; Griger, Zoltán ; Betteridge, Zoe ; Szöllosi, Lászlóné ; Dankó, K. / Four dermatomyositis-specific autoantibodies-anti-TIF1γ, anti-NXP2, anti-SAE and anti-MDA5-in adult and juvenile patients with idiopathic inflammatory myopathies in a Hungarian cohort. In: Autoimmunity Reviews. 2014 ; Vol. 13, No. 12. pp. 1211-1219.
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