Atypical Hemolytic Uremic Syndrome Clinical Trial
Official title:
Multicentric, Prospective Open-label Study Assessing an Algorithm-based Strategy of Eculizumab Discontinuation in Children and Adults With Atypical Hemolytic Uremic Syndrome (aHUS)
Atypical hemolytic syndrome (aHUS) is a severe renal disease affecting children and adults. It is characterized by the occlusion of intrarenal vessels due to the presence of platelet/fibrin thrombi, and leads to end-stage renal disease in up to 2/3 of patients. The discovery of complement alternative pathway as a major risk factor for aHUS has led to the design of a disease-specific treatment, the anti-C5 monoclonal antibody, eculizumab. Complement inhibition using eculizumab has clearly improved the renal outcome of aHUS patients with a dramatic decrease in the risk of end-stage renal disease. However, the optimal duration of eculizumab therapy is still debated. The present study aims to assess the feasibility and safety of the discontinuation of eculizumab treatment in children and adults with aHUS.
A visit (physical examination; blood pressure measurement) will be performed every month for
3 months, and every 3 months for 21 months.
Blood (serum creatinine, platelet count, hemoglobin, LDH, haptoglobin) and urine
(proteinuria/creatininuria ratio and microscopic hematuria) tests will be performed every 2
weeks from inclusion to M6 and subsequently every month starting M7 Urine dipstick (for
albuminuria and microscopic hematuria) will be performed by the patients at home at least
twice a week.
Markers of complement activation and biomarkers of endothelial cells activation and immune
cells activation will be assessed at baseline, M1, M3, M6, M9, M12, M18 and M24.
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