Аннтотация

© 2018 S. Karger AG.All right reserved. We present a clinical case of a 34 years old female patient who simultaneously developed two rare conditions: microscopic polyangiitis and atypical hemolytic uremic syndrome (aHUS) associated with a polymorphism in diacylglycerol kinase-ε gene (DGKE), which seems to be the first case of aHUS associated with DGKE mutation in an adult patient. We suggest that the patient experienced chronic subclinical course of thrombotic microangiopathy (TMA) since adolescence, because persistent proteinuria and slowly progressive chronic kidney disease were first found when she was at the age of 13. She developed ANCA-associated vasculitis at the age of 34 with dialysis-dependent renal failure and alveolar hemorrhage that were accompanied by an acute episode of TMA. Treatment with high-dose of corticosteroids, cyclophosphamide and plasmapheresis was initiated. Alveolar hemorrhage have been resolved. However, severe hypertension, hemolytic anemia and thrombocytopenia persisted despite treatment. Plasma resistance was considered to be an indication for treatment with eculizumab, which proved to be beneficial. However, kidney function did not recover. Possible interactions between complement system, DGKE and their possible role in the pathogenesis of TMA are discussed.