ERJ Open Research (Oct 2023)

Real-world characteristics of “super-responders” to mepolizumab and benralizumab in severe eosinophilic asthma and eosinophilic granulomatosis with polyangiitis

  • Andrea Portacci,
  • Raffaele Campisi,
  • Enrico Buonamico,
  • Santi Nolasco,
  • Corrado Pelaia,
  • Nunzio Crimi,
  • Alida Benfante,
  • Massimo Triggiani,
  • Giuseppe Spadaro,
  • Maria Filomena Caiaffa,
  • Giulia Scioscia,
  • Aikaterini Detoraki,
  • Giuseppe Valenti,
  • Francesco Papia,
  • Alessandra Tomasello,
  • Nicola Scichilone,
  • Girolamo Pelaia,
  • Claudia Crimi,
  • Giovanna Elisiana Carpagnano

DOI
https://doi.org/10.1183/23120541.00419-2023
Journal volume & issue
Vol. 9, no. 5

Abstract

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Background The current definition of severe eosinophilic asthma (SEA) super-responders to biologic treatment does not include patients with other eosinophil-based comorbidities. Although eosinophilic granulomatosis with polyangiitis (EGPA) is frequently associated with SEA, we lack data on a possible super-response to biologic treatments in patients suffering from these two diseases. We aim to assess super-responder features in real-life patients with SEA and EGPA treated with mepolizumab and benralizumab. Methods We enrolled 39 patients with SEA and EGPA eligible for treatment with mepolizumab or benralizumab. Super-responder assessment was performed considering oral corticosteroid (OCS) cessation, lack of exacerbations, forced expiratory volume in 1 s and Asthma Control Test (ACT) improvement. Results Super-responders showed worse clinical baseline characteristics than non-super-responder patients, with a greater improvement in severe asthma exacerbations, OCS dose reduction and ACT score increase. Definition of super-responders was consistent only considering a 12-month course of monoclonal antibody, lacking sensitivity in earlier evaluations. Conclusion Mepolizumab and benralizumab are safe and effective in patients with EGPA and SEA, since a consistent proportion of patients show a super-response after 12 months of treatment. Further studies will address specific criteria for super-responder assessment in these patients.