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Study identifier: NCT05902325 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Identifying Predictors Of Response To Mepolizumab In CRSwNP

Condition: Chronic Rhinosinusitis With Nasal Polyps  ·  Sponsor: Centre hospitalier de l'Université de Montréal (CHUM)

PhasePhase 4
Planned participants36
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The investigators propose a real-world study to assess the mechanism of action of long-lasting response to mepolizumab in patients with chronic rhinosinusitis with nasal polyposis (CRSwNP) and identify clinically useful predictors of response. Mepolizumab is a monoclonal antibody targeting IL-5 and is approved for use in asthma and CRSwNP. In clinical studies, 12 months of treatment with mepolizumab improved signs and symptoms of CRSwNP and reduced the need for surgery. While several biologic medications targeting facets of the Type 2 mechanism are currently indicated for chronic rhinosinusitis with nasal polyps mepolizumab alone appears capable of modifying the disease's biological behaviour and producing long-standing improvements after the cessation of treatment. In the mepolizumab for CRSwNP regulatory trial (SYNAPSE), a subset of patients experienced dramatic and long-lasting, which is over 48 months after cessation of administration of the investigational medicinal product (IMP) in our experience. This has been partially captured in a follow-on study to the registration trail, which showed that a subset of patients followed for 24 weeks after cessation of biologic therapy (with continued use of mometasone furoate) demonstrated persistent improvements over baseline. However, the mechanism of the long-lasting effect in a subset of patients is not well understood, and it is impossible currently to identify patients who will derive this maximal benefit. The mechanism for …

This description comes directly from the study's public registry record.

Talk to the study team

Martin Yvon Desrosiers, MD  ·  514-890-8000  ·  desrosiers_martin@hotmail.com

Leandra Mfuna Endam, Msc  ·  514-890-8000  ·  leandra.mfuna-endam.chum@ssss.gouv.qc.ca

Always discuss trial participation with your own doctor first.

Locations (1)

Centre Hospitalier de l'Université de Montréal (CHUM)Montreal, Quebec, CanadaRecruiting

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Source record: clinicaltrials.gov/study/NCT05902325