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Real-life use of the PEXIVAS reduced-dose glucocorticoid regimen in granulomatosis with polyangiitis and microscopic polyangiitis
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Edité par CCSD ; BMJ Publishing Group -
International audience. Background The PEXIVAS (Plasma exchange and glucocorticoids in severe antineutrophil cytoplasmic antibody (ANCA)-associated vasculitis) trial showed that a reduced-dose glucocorticoid regimen (redGC) was non-inferior to a standard-dose regimen (standGC) with respect to death or end-stage kidney disease (ESKD) in patients with ANCA-associated vasculitis (AAV). However, the primary endpoint did not include disease progression or relapse, cyclophosphamide was the main induction therapy and rituximab (RTX)-treated patients tended to have a higher risk of death or ESKD with redGC. We aimed to evaluate the real-world use of redGC. Methods We conducted a retrospective, multicentre study comparing PEXIVAS redGC with standGC in patients with AAV. The primary composite outcome was the occurrence of death, ESKD, AAV progression before remission or relapse within the 12 months following induction. Inverse probability of treatment weighting was used to correct for baseline imbalance between groups. Factors associated with the occurrence of the primary outcome were estimated. Results A total of 234 patients were included. The primary composite outcome occurred in 42/126 (33%) patients with redGC versus 20/108 (19%) with standGC. In unweighted multivariable analysis and in weighted analysis, redGC was independently associated with the primary outcome but not with death or ESKD. Among redGC-treated patients, those with serum creatinine>300 µmol/L were more likely to achieve the primary outcome. RTX-treated patients who received redGC were more likely to experience death or ESKD and to achieve the primary outcome. Conclusion In this study of patients with AAV primarily treated with RTX, redGC was associated with an increased risk of the primary outcome consisting of death, ESKD, AAV progression before remission or relapse.
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