Benralizumab for eosinophilic granulomatosis with polyangiitis
- PMID: 37550002
- DOI: 10.1136/ard-2023-224624
Benralizumab for eosinophilic granulomatosis with polyangiitis
Abstract
Background: Benralizumab is effective in the treatment of eosinophilic asthma and is being investigated for the treatment of other eosinophil-associated diseases. Reports on the use of benralizumab for the treatment of eosinophilic granulomatosis with polyangiitis (EGPA) are limited to case reports and small case series.
Methods: We conducted a multicentre, retrospective study including EGPA patients treated with off-label benralizumab. The primary endpoint was the rate of complete response defined as no disease activity (Birmingham Vasculitis Activity Score=0) and a prednisone dose ≤4 mg/day. Partial response was defined as no disease activity and a prednisone dose ≥4 mg/day.
Results: Sixty-eight patients were included, including 31 (46%) who had previously received mepolizumab. The use of benralizumab was warranted by uncontrolled asthma in 54 (81%), persistent ear, nose and throat (ENT) manifestations in 27 (40%) and persistent glucocorticoids (GCs) use in 48 (74%) patients. Median (IQR) follow-up after starting benralizumab was 23 (9-34) months. Thirty-three patients (49%) achieved a complete response, 24 (36%) achieved a partial response and 10 (15%) did not respond. Among the 57 patients who initially responded, 10 (18%) eventually required further line treatments. GCs were discontinued in 23 patients (38%). Prior mepolizumab use was associated with a higher rate of primary failure (26.7% vs 5.4%, p=0.034) and less frequent GCs discontinuation (14.8% vs 55.9%, p=0.001). Vasculitis flares occurred in 7 patients (11%) and were associated with histological evidence of vasculitis and/or antineutrophil cytoplasmic antibodies positivity at benralizumab initiation (p=0.004).
Conclusions: Benralizumab appears to be an effective treatment for refractory asthma or ENT manifestations in EGPA and allows GC-sparing. However, its efficacy was lower after prior failure of mepolizumab.
Keywords: Biological Therapy; Glucocorticoids; Systemic vasculitis; Treatment.
© Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ.
Conflict of interest statement
Competing interests: The authors declare no financial support. MG reports personal fees from GlaxoSmithKline and AstraZeneca outside the submitted work. CT reports personal fees from AstraZeneca, Sanofi, GlaxoSmithKline, Chiesi and Novartis outside the submitted work. CDupin reports personal fees from AstraZeneca and GlaxoSmithKline outside the submitted work. HY reports personal fees from GlaxoSmithKline outside the submitted work. Other authors has nothing to disclose.
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