Zusammenfassung
Die Therapie des nephrotischen Syndroms im Kindesalter kann v. a. durch Steroidabhängigkeit und -resistenz kompliziert werden. Selbst der Einsatz von Kalzineurininhibitoren und Alkylanzien bringt mitunter keinen therapeutischen Erfolg oder ist mit schweren (z. B. Nephrotoxizität) bzw. unkalkulierbaren (z. B. Gonadotoxizität) Nebenwirkungen verbunden. Bei einer Reihe von Kindern mit schwer therapierbarem nephrotischem Syndrom und hoher Immunsuppression erlaubt der Einsatz des Anti-CD20-Antikörpers Rituximab die Reduktion weiterer Immunsuppressiva. Nebenwirkungen sind bislang vornehmlich bei anderen Grunderkrankungen beschrieben und umfassen, neben allergischen Reaktionen auf den nicht vollständig humanisierten Antikörper, eine Hypogammaglobulinämie und selten eine äußerst schwer verlaufende progressive multifokale Leukenzephalopathie. Die genaue Rate an Therapieversagern ist beim nephrotischen Syndrom bislang unbekannt. Daher sollte in jedem Fall bis zum Vorliegen konklusiver klinischer Studien Rituximab nur unter Erfassung sämtlicher Daten in Registern verabreicht werden, wie dies in der Gesellschaft für Pädiatrische Nephrologie (GPN) geplant ist.
Abstract
The treatment of childhood nephrotic syndrome can be complicated by steroid dependence or resistance. Even the use of calcineurin inhibitors and alkylating agents does not always lead to sustained remission or is associated with severe (e.g. nephrotoxicity) or incalculable (e.g. gonadotoxicity) risks. A number of children and adolescents with severe nephrotic syndrome receiving intensive immunosuppressive therapy have been treated with the anti-CD20 antibody rituximab, leading to a reduction in immunosuppressive drugs for most patients. Adverse effects – mostly reported in other diseases treated with rituximab – include allergic reactions, hypogammaglobulinaemia, and, rarely, progressive multifocal leukoencephalopathy. The exact percentage of patients with nephrotic syndrome who fail to respond to rituximab is not yet known. Therefore, the use of rituximab should be restricted to clinical studies or, if unavailable, to registries recording side effects and efficacy of treatment, as currently planned by the German Society of Paediatric Nephrology.
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Interessenkonflikt
Der korrespondierende Autor weist auf folgende Beziehung/en hin: Der Erstautor erhält eine Forschungsunterstützung der Fa. Hoffmann-LaRoche für eine durch die Gesellschaft für Pädiatrische Nephrologie gestützte Studie zur Reduktion der Kalzineurininhibitorentoxizität nach Nierentransplantation. Es besteht keine Unterstützung für Studien zum Einsatz von Rituximab.
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Dötsch, J., Müller-Wiefel, D. & Kemper, M. Biologika in der Therapie des nephrotischen Syndroms. Monatsschr Kinderheilkd 157, 247–253 (2009). https://doi.org/10.1007/s00112-008-1869-6
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DOI: https://doi.org/10.1007/s00112-008-1869-6
Schlüsselwörter
- Rituximab
- Steroidresistenz
- Steroidabhängigkeit
- Progressive multifokale Leukenzephalopathie
- Klinische Studien