Renal involvement in eosinophilic granulomatosis with polyangiitis (EGPA): a multicentric retrospective study of 63 biopsy-proven cases

Autor: Marie Essig, Cécile-Audrey Durel, David Jayne, Christelle Barbet, Sandrine Hirschi-Santelmo, Thomas Le Gallou, Antoine Bardy, Jean-Jacques Boffa, Sylvain Marchand-Adam, Dimitri Titeca-Beauport, Grégory Pugnet, Xavier Belenfant, Camille Taillé, Xavier Puéchal, Cédric Rafat, Pascal Godmer, Vincent Cottin, Vítor Teixeira, Alexandre Karras, Julien Bouet, Renato Alberto Sinico, Jacques Gaultier, Philippe Guilpain, Daniel Engelbert Blockmans, Yoann Crabol, Christian Agard, Christophe Deligny
Přispěvatelé: Durel, C, Sinico, R, Teixeira, V, Jayne, D, Belenfant, X, Marchand-Adam, S, Pugnet, G, Gaultier, J, Le Gallou, T, Titeca-Beauport, D, Agard, C, Barbet, C, Bardy, A, Blockmans, D, Boffa, J, Bouet, J, Cottin, V, Crabol, Y, Deligny, C, Essig, M, Godmer, P, Guilpain, P, Hirschi-Santelmo, S, Rafat, C, Puéchal, X, Taillé, C, Karras, A
Rok vydání: 2020
Předmět:
Zdroj: Rheumatology. 60:359-365
ISSN: 1462-0332
1462-0324
Popis: Objective Eosinophilic granulomatosis with polyangiitis (EGPA) is a systemic small-vessel vasculitis characterized by asthma, hypereosinophilia and ANCA positivity in 40% of patients. Renal involvement is rare and poorly described, leading to this renal biopsy-proven based study in a large EGPA cohort. Methods We conducted a retrospective multicentre study including patients fulfilling the 1990 ACR criteria and/or the 2012 revised Chapel Hill Consensus Conference criteria for EGPA and/or the modified criteria of the MIRRA trial, with biopsy-proven nephropathy. Results Sixty-three patients [27 women, median age 60 years (18–83)] were included. Renal disease was present at vasculitis diagnosis in 54 patients (86%). ANCA were positive in 53 cases (84%) with anti-MPO specificity in 44 (83%). All patients had late-onset asthma. Peripheral neuropathy was present in 29 cases (46%), alveolar haemorrhage in 10 (16%). The most common renal presentation was acute renal failure (75%). Renal biopsy revealed pauci-immune necrotizing GN in 49 cases (78%). Membranous nephropathy (10%) and membranoproliferative GN (3%) were mostly observed in ANCA-negative patients. Pure acute interstitial nephritis was found in six cases (10%); important interstitial inflammation was observed in 28 (44%). All patients received steroids with adjunctive immunosuppression in 54 cases (86%). After a median follow-up of 51 months (1–296), 58 patients (92%) were alive, nine (14%) were on chronic dialysis and two (3%) had undergone kidney transplantation. Conclusion Necrotizing pauci-immune GN is the most common renal presentation in ANCA-positive EGPA. ANCA-negative patients had frequent atypical renal presentation with other glomerulopathies such as membranous nephropathy. An important eosinophilic interstitial infiltration was observed in almost 50% of cases.
Databáze: OpenAIRE