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Rastelli F, Baragetti I, Buzzi L, Ferrario F, Benozzi L, Di Nardo F, Devoti E, Cancarini G, Mezzina N, Napodano P, Gallieni M, Santoro D, Buemi M, Pecchini P, Malberti F, Colombo V, Colussi G, Sabadini E, Remuzzi G, Argentiero L, Gesualdo L, Gatti G, Trevisani F, Slaviero G, Spotti D, Baraldi O, La Manna G, Pignone E, Saltarelli M, Heidempergher M, Tedesco M, Genderini A, Ferro M, Rollino C, Roccatello D, Guzzo G, Clari R, Barbara Piccoli G, Comotti C, Brunori G, Cameli P, Bargagli E, Rottoli P, Dugo M, Cristina Maresca M, Bertoli M, Giozzet M, Brugnano R, Giovanni Nunzi E, D'Amico M, Minoretti C, Acquistapace I, Colturi C, Minola E, Camozzi M, Tosoni A, Nebuloni M, Ferrario F, Dell'Antonio G, Cusinato S, Feriozzi S, Pozzi C. Renal involvement in sarcoidosis: histological patterns and prognosis, an Italian survey. Sarcoidosis Vasc Diffuse Lung Dis 2021; 38:e2021017. [PMID: 34744417 PMCID: PMC8552569 DOI: 10.36141/svdld.v38i3.11488] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Accepted: 09/09/2021] [Indexed: 12/12/2022]
Abstract
Background Granulomatous interstitial nephritis in sarcoidosis (sGIN) is generally clinically silent, but in <1% causes acute kidney injury (AKI). Methods This Italian multicentric retrospective study included 39 sarcoidosis-patients with renal involvement at renal biopsy: 31 sGIN-AKI, 5 with other patterns (No-sGIN-AKI), 3 with nephrotic proteinuria. We investigate the predictive value of clinical features, laboratory, radiological parameters and histological patterns regarding steroid response. Primary endpoint: incident chronic kidney disease (CKD) beyond the 1°follow-up (FU) year; secondary endpoint: response at 1°line steroid therapy; combined endpoint: the association of initial steroid response and outcome at the end of FU. Results Complete recovery in all 5 No-sGIN-AKI-patients, only in 45% (13/29) sGIN-AKI-patients (p=0.046) (one lost in follow-up, for another not available renal function after steroids). Nobody had not response. Primary endpoint of 22 sGIN-AKI subjects: 65% (13/20) starting with normal renal function developed CKD (2/22 had basal CKD; median FU 77 months, 15-300). Combined endpoint: 29% (6/21) had complete recovery and final normal renal function (one with renal relapse), 48% (10/21) had partial recovery and final CKD (3 with renal relapse, of whom one with basal CKD) (p=0.024). Acute onset and hypercalcaemia were associated to milder AKI and better recovery than subacute onset and patients without hypercalcaemia, women had better endpoints than men. Giant cells, severe interstitial infiltrate and interstitial fibrosis seemed negative predictors in terms of endpoints. Conclusions sGIN-AKI-patients with no complete recovery at 1°line steroid should be treated with other immunosuppressive to avoid CKD, in particular if males with subacute onset and III stage-not hypercalcaemic AKI.
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Affiliation(s)
- Francesco Rastelli
- Nephrology SS. Trinità Hospital, Borgomanero, Italy.,Nephrology Bassini Hospital, Cinisello Balsamo, Italy
| | | | - Laura Buzzi
- Nephrology Bassini Hospital, Cinisello Balsamo, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Giuseppe Remuzzi
- Nephrology Papa Giovanni XXIII Hospital, Bergamo, Italy.,Clinical Research Centre for Rare Diseases, Mario Negri Institute for Pharmacological Research, Pediatric Nephrology Department Bergamo, Italy
| | | | | | - Guido Gatti
- Nephrology S.Raffaele Hospital, Milano, Italy
| | | | | | | | - Olga Baraldi
- Nephrology Policlino Sant'Orsola-Malpighi, Bologna, Italy
| | | | | | | | | | | | | | | | | | | | | | | | - Giorgina Barbara Piccoli
- Nephrology S.Luigi Hospital, Orbassano, Italy.,Nephrologie Centre Hospitalier du Mans, Le Mans, France
| | | | | | - Paolo Cameli
- Pneumology S.Maria alle Scotte Hospital, Siena, Italy
| | | | - Paola Rottoli
- Pneumology S.Maria alle Scotte Hospital, Siena, Italy
| | - Mauro Dugo
- Nephrology S.Maria dei Battuti Hospital, Treviso, Italy
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Claudio Pozzi
- Nephrology Bassini Hospital, Cinisello Balsamo, Italy
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