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Published in: Pediatric Nephrology 10/2012

01-10-2012 | Original Article

ANCA-associated glomerulonephritis/systemic vasculitis in childhood: clinical features–outcome

Authors: Ekaterini Siomou, Despoina Tramma, Claire Bowen, David V. Milford

Published in: Pediatric Nephrology | Issue 10/2012

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Abstract

Background

Antineutrophil cytoplasmic antibody (ANCA)-associated glomerulonephritis and systemic vasculitis (AAGNV) is uncommon in childhood.

Methods

This is a retrospective study of AAGNV cases diagnosed over a 13-year period in a tertiary pediatric nephrology department.

Results

Thirteen cases of AAGNV were identified: seven Wegener granulomatosis (WG) and six microscopic polyangiitis (MPA). Acute renal failure/nephrotic range proteinuria (NRP) was found in 77 % of the patients (4 with WG, all with MPA). Eleven (85 %) patients showed necrotizing glomerulonephritis (NGN), with ≥50 % crescents identified in nine patients (69 %) (4 with WG, 5 with MPA). Treatment with methylprednisolone, cyclophosphamide and plasma exchange resulted in extra-renal remission and antibody reduction in all patients and renal function improvement/stabilization in 77 % of the patients. Three patients, all without oliguria at presentation and few sclerotic lesions, had normal renal function at follow-up. Chronic kidney disease (CKD) stages 2 and 3–4 were observed in four (WG) and three (MPA) patients, respectively. Three patients (23 %) developed end stage renal disease: two were MPA patients with severe presentation (markedly impaired glomerular filtration rate, oliguria, NRP, crescentic NGN, glomerular sclerosis) and one was a WG patient with extensive interstitial fibrosis/tubular atrophy.

Conclusions

Severe renal involvement was more common in children with MPA than WG. Treatment with methylprednisolone, cyclophosphamide and plasma exchange induced extra-renal remission/serological response and renal function improvement/stabilization. Markedly decreased GFR, oliguria, NRP, and chronic glomerular lesions at presentation were predictors of poor outcome.
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Metadata
Title
ANCA-associated glomerulonephritis/systemic vasculitis in childhood: clinical features–outcome
Authors
Ekaterini Siomou
Despoina Tramma
Claire Bowen
David V. Milford
Publication date
01-10-2012
Publisher
Springer-Verlag
Published in
Pediatric Nephrology / Issue 10/2012
Print ISSN: 0931-041X
Electronic ISSN: 1432-198X
DOI
https://doi.org/10.1007/s00467-012-2198-5

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