Patients carrying rare NLRP3 variants are at risk of severe CAPS; onset before the age of 6 months is associated with more severe neurological involvement and hearing loss. These findings may have an impact on treatment decisions.
Patients with low-penetrance NLRP3 variants display a distinct clinical phenotype and an intermediate biologic phenotype, including IL-1β and non-IL-1β-mediated inflammatory pathway activation.
Juvenile dermatomyositis (JDM) is a chronic inflammatory disorder of unknown aetiology that affects muscle and skin. We report on two patients with severe progressive JDM who developed contractures and were wheelchair dependent despite therapy including methotrexate (MTX), steroids, immunoglobulins, cyclosporin A, and rituximab. On account of the refractory disease, autologous stem cell transplantation (ASCT) was performed using a CD3/CD19-depleted graft after immunoablative conditioning with fludarabine, cyclophosphamide, and anti-thymocyte globulin. This induced a dramatic improvement and sustained remission of the disease in both patients. We demonstrate that ASCT is a therapeutic option with low toxicity for patients with severe, refractory JDM.
RhIFN-alpha2a was effective and well tolerated in these juvenile patients with severe neurological BD. Regarding the serious consequences following ocular and CNS affection and adverse effects of steroid dependency, administration of rhIFN-alpha2a at an earlier time point needs to be considered.
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