Kidney Histopathology Can Predict Kidney Function in ANCA-Associated Vasculitides with Acute Kidney Injury Treated with Plasma Exchanges.
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Nezam Dorian, Porcher Raphaël, Grolleau François, Morel Pauline, Titeca-Beauport Dimitri, Faguer Stanislas, Karras Alexandre, Solignac Justine, Jourde-Chiche Noémie, Maurier François, Sakhi Hamza, El Karoui Khalil, Mesbah Rafik, Carron Pierre Louis, Audard Vincent, Ducloux Didier, Paule Romain, Augusto Jean-François, Aniort Julien, Tiple Aurélien, Rafat Cédric, Beaudreuil Séverine, Puéchal Xavier, Gobert Pierre, Massy Ziad, Hanrotel Catherine, Bally Stéphane, Martis Nihal, Durel Cécile-Audrey, Desbuissons Geoffroy, Godmer Pascal, Hummel Aurélie, Perrin François, Néel Antoine, De Moreuil Claire, Goulenok Tiphaine, Guerrot Dominique, Grange Steven, Foucher Aurélie, Deroux Alban, Cordonnier Carole, Guilbeau-Frugier Céline, Modesto-Segonds Anne, Nochy Dominique, Daniel Laurent, Moktefi Anissa, Rabant Marion, Guillevin Loïc, Régent Alexis, Terrier Benjamin, on behalf of the French Vasculitis Study Group
Аннотация
METHODS: We performed a multicenter, retrospective study on 188 patients with AAV and AKI treated with PLEX and 237 not treated with PLEX. The primary outcome was mortality or KRT at 12 months (M12).
RESULTS: No significant benefit of PLEX for the primary outcome was found. To identify patients benefitting from PLEX, we developed a model predicting the average treatment effect of PLEX for an individual depending on covariables. Using the prediction model, 223 patients had a better predicted outcome with PLEX than without PLEX, and 177 of them had >5% increased predicted probability with PLEX compared with without PLEX of being alive and free from KRT at M12, which defined the PLEX-recommended group. Risk difference for death or KRT at M12 was significantly lower with PLEX in the PLEX-recommended group (-15.9%; 95% CI, -29.4 to -2.5) compared with the PLEX not recommended group (-4.8%; 95% CI, 14.9 to 5.3). Microscopic polyangiitis, MPO-ANCA, higher serum creatinine, crescentic and sclerotic classes, and higher Brix score were more frequent in the PLEX-recommended group. An easy to use score identified patients who would benefit from PLEX. The average treatment effect of PLEX for those with recommended treatment corresponded to an absolute risk reduction for death or KRT at M12 of 24.6%.
CONCLUSIONS: PLEX was not associated with a better primary outcome in the whole study population, but we identified a subset of patients who could benefit from PLEX. However, these findings must be validated before utilized in clinical decision making.