Zusammenfassung
Die juvenile Dermatomyositis (JDM) ist die häufigste chronisch-entzündliche Myopathie des Kindesalters, die immer noch oft zu einem komplizierten Verlauf führt. In dieser Übersicht werden basierend auf einer Literatursuche neue Erkenntnisse zur JDM dargestellt. Myositisspezifische Antikörper liegen häufig vor und korrelieren mit klinischen Phänotypen und dem Verlauf der Erkrankung. Die Aktivierung von Typ-I-Interferonen spielt eine wichtige Rolle in der Pathogenese und ist verknüpft mit den Hauptmanifestationen der Erkrankung; möglicherweise kann dies in der Zukunft zu gezielten Therapien führen. Derzeit gibt es keine speziell für die JDM zugelassenen Medikamente. Die Standardtherapie umfasst basierend auf einer randomisierten kontrollierten Studie und gemäß Expertenkonsens immer Glukokortikoide und Methotrexat. Verbreitete Medikamente bei refraktärer JDM sind u. a. Azathioprin, Ciclosporin A, intravenöses Immunglobulin, Mycophenolatmofetil und Rituximab. Eine optimale Therapie der JDM ist nicht etabliert, jedoch existieren mittlerweile nationale und internationale Konsensusempfehlungen und Therapiepläne, die bei der Entscheidungsfindung helfen können. Zahlreiche validierte Messinstrumente stehen zur Verfügung, um die Krankheitsaktivität der JDM, eine resultierende Schädigung und die Therapieantwort zu erfassen. Diese Instrumente sollten regelhaft bei Patienten mit JDM angewendet und idealerweise in Registern dokumentiert werden, um so verschiedene Behandlungsweisen vergleichen zu können. Die PRO-KIND-Initiative der Gesellschaft für Kinder- und Jugendrheumatologie hat praxis- und konsensbasiert in Deutschland sowohl eine diagnostische als auch eine Treat-to-Target-Behandlungsstrategie entwickelt.
Abstract
Juvenile dermatomyositis (JDM) is the most common chronic inflammatory myopathy of childhood, which is still frequently characterized by a complicated disease course. In this review, novel findings relating to JDM are presented based on a review of the literature. Myositis-specific antibodies are often detected and may correlate with clinical phenotypes and disease course. Activation of type I interferon pathways plays an important pathogenic role and relates to the main clinical manifestations of the disease. This may lead to targeted therapies in the future. Currently, there are no treatments specifically approved for the treatment of JDM. Standard therapy is currently considered to include glucocorticoids and methotrexate based on a randomized controlled study and expert consensus. Several medications are commonly used in cases of refractory JDM, including azathioprine, ciclosporin, intravenous immune globulins, mycophenolate mofetil, and rituximab. An optimal treatment of JDM has not yet been established; however, there are national and international consensus recommendations and treatment plans that may aid in the decision-making process. Several validated tools are available to assess disease activity, disease damage, and treatment responses. Such tools should be routinely used in patients with JDM, and ideally be documented in registries in order to allow comparative effectiveness studies. The PRO-KIND initiative of the German Society for Pediatric Rheumatology has developed a diagnostic and a treat-to-target strategy based on a practice- and consensus-based process.
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C. Hinze hat für die Teilnahme an Advisory Boards Honorare von Novartis und von Shire erhalten.
Für diesen Beitrag wurden von dem Autor keine Studien an Menschen oder Tieren durchgeführt. Für die aufgeführten Studien gelten die jeweils dort angegebenen ethischen Richtlinien.
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H.-I. Huppertz, Bremen
K. Minden, Berlin
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Hinze, C. Juvenile Dermatomyositis – was gibt es Neues?. Z Rheumatol 78, 627–635 (2019). https://doi.org/10.1007/s00393-019-0643-6
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DOI: https://doi.org/10.1007/s00393-019-0643-6