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A Phase 2b, Randomized, Double-Blind, Placebo-Controlled, Multicenter Study of the Efficacy and Safety of Brensocatib in Participants with Chronic Rhinosinusitis Without Nasal Polyps – The BiRCh Study

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2022-502481-24-00
Acronym
The BiRCh Study
Enrollment
203
Registered
2024-02-06
Start date
2024-05-23
Completion date
2025-10-29
Last updated
2025-05-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic Rhinosinusitis without Nasal Polyps (CRSsNP)

Brief summary

Change from Baseline to the 28-day average of daily Sinus Total Symptom Score (sTSS)a at Week 24

Detailed description

Change from Baseline in percentage of sinus (maxillary and ethmoid) opacification as measured by volumetry at Week 24, Change from Baseline in modified Lund-MacKay (LMK) CT score at Week 24, Participant status indicator for requiring rescue (antibiotics, SCS, and/or nasal surgery) due to worsening of any CRS symptom, Change from Baseline to the 28-day average of daily Nasal Congestion Scores (NCS) at Weeks 24, Change from Baseline to the 28-day average of daily Peak Nasal Inspiratory Flow (PNIF) at Week 24, Change from Baseline in Sino-Nasal Outcome Test (SNOT-22) at Week 24, Brensocatib plasma concentration, Adverse events (AEs) over 24 weeks of treatment, Clinical laboratory test results, vital signs, and electrocardiograms (ECGs) over 24 weeks of treatment

Interventions

Sponsors

Insmed Inc.
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
Change from Baseline to the 28-day average of daily Sinus Total Symptom Score (sTSS)a at Week 24

Secondary

MeasureTime frame
Change from Baseline in percentage of sinus (maxillary and ethmoid) opacification as measured by volumetry at Week 24, Change from Baseline in modified Lund-MacKay (LMK) CT score at Week 24, Participant status indicator for requiring rescue (antibiotics, SCS, and/or nasal surgery) due to worsening of any CRS symptom, Change from Baseline to the 28-day average of daily Nasal Congestion Scores (NCS) at Weeks 24, Change from Baseline to the 28-day average of daily Peak Nasal Inspiratory Flow (PNIF) at Week 24, Change from Baseline in Sino-Nasal Outcome Test (SNOT-22) at Week 24, Brensocatib plasma concentration, Adverse events (AEs) over 24 weeks of treatment, Clinical laboratory test results, vital signs, and electrocardiograms (ECGs) over 24 weeks of treatment

Countries

Belgium, Bulgaria, Czechia, Denmark, France, Germany, Hungary, Italy, Poland, Portugal, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026