title: Rare myositis-specific autoantibody associations among Hungarian patients with idiopathic inflammatory myopathy.
abstract: Idiopathic inflammatory myopathies are systemic, chronic autoimmune diseases characterized by symmetrical, proximal muscle weakness. Homogeneous groups present with similar symptoms. The response to therapy and prognosis could be facilitated by myositis-specific autoantibodies, and in this way, give rise to immunoserological classification. The myositis-specific autoantibodies are directed against specific proteins found in the cytoplasm or in the nucleus of the cells. To date, literature suggests the rarity of the co-existence of two myositis-specific autoantibodies. In this study the authors highlight rare associations of myositis-specific autoantibodies. Three hundred and thirty-seven Hungarian patients with polymyositis or dermatomyositis were studied. Their clinical findings were noted retrospectively. Specific blood tests identified six patients with the rare co-existence of myositis-specific autoantibodies, anti-Jo-1 and anti-SRP, anti-Jo-1 and anti-Mi-2, anti-Mi-2 and anti-PL-12, anti-Mi-2 and anti-SRP, and anti-SRP and anti-PL-7, respectively. This case review aims to identify the clinical importance of these rare associations and their place within the immunoserological classification.
authors.forename: L
authors.initials: L
authors.lastname: Bodoki
authors.forename: M
authors.initials: M
authors.lastname: Nagy-Vincze
authors.forename: Z
authors.initials: Z
authors.lastname: Griger
authors.forename: Z
authors.initials: Z
authors.lastname: Betteridge
authors.forename: L
authors.initials: L
authors.lastname: Szöllősi
authors.forename: R
authors.initials: R
authors.lastname: Jobanputra
authors.forename: K
authors.initials: K
authors.lastname: Dankó
mesh_terms: D000251:Adenosine Triphosphatases / Q000276:immunology; D000918:Antibody Specificity; D001323:Autoantibodies / Q000097:blood* / Q000276:immunology; D003546:Cysteine Endopeptidases / Q000276:immunology; D004268:DNA-Binding Proteins / Q000276:immunology; D003882:Dermatomyositis / Q000276:immunology*; D006801:Humans; D006814:Hungary; D018908:Muscle Weakness / Q000209:etiology; D009220:Myositis / Q000150:complications / Q000276:immunology*; D017285:Polymyositis; D011379:Prognosis; D012189:Retrospective Studies; D014157:Transcription Factors / Q000276:immunology
chemical_list: D001323:Autoantibodies; D004268:DNA-Binding Proteins; C045760:Mi-2 antibodies; C511956:TRIM33 protein, human; D014157:Transcription Factors; D003546:Cysteine Endopeptidases; C501833:SENP2 protein, human; D000251:Adenosine Triphosphatases; C551732:MORC3 protein, human