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  • Title: ACE inhibitors and angiotensin II receptor blockers in IgA nephropathy with mild proteinuria: the ACEARB study.
    Author: Pozzi C, Del Vecchio L, Casartelli D, Pozzoni P, Andrulli S, Amore A, Peruzzi L, Coppo R, Locatelli F, Adulto e Bambino Study Group, Immunopatologia Renale Study Group of the Italian Society of Nephrology.
    Journal: J Nephrol; 2006; 19(4):508-14. PubMed ID: 17048209.
    Abstract:
    Few studies have investigated IgA nephropathy patients presenting with 'favorable' clinical features at onset, such as normal renal function, proteinuria<1 g/24 hours and the absence of hypertension, and no controlled clinical trials have tested the effects of treatment in such patients who may nevertheless develop end-stage renal disease. It is therefore important to find a well-tolerated and economic therapy capable of decreasing their risk of high proteinuria and blood pressure levels. The aim of this multicenter open-label randomized clinical trial is to test whether blocking the renin-angiotensin system (RAS) decreases the risk of progression in patients aged 3-60 years with biopsy-proven benign IgA glomerulonephritis, proteinuria levels of 0.3-0.9 g/24 hours, and normal renal function and blood pressure. The RAS is blocked by first using a single drug class (angiotensin-converting enzyme inhibitor or angiotensin II receptor blocker), and then combining the 2 classes as soon as the 1-drug blockade has become ineffective. We plan to enroll 378 patients over the next 3 years and randomize them to receive ramipril 5 mg/day (3 mg/m2 in children) (group A), irbesartan 300 mg/day (175 mg/m 2 in children) (group B) or supportive therapy (group C); if an increase in proteinuria of at least 50% from baseline is detected after 6 months of treatment, the other RAS inhibitor will be added. The observation period will be at least 5 years (except in the case of the development of the primary end point).
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