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Dose Range Finding, Efficacy, and Safety Study of Nebulized CSL787 in Adults With Non-cystic Fibrosis Bronchiectasis (NCFB)

A Phase 2b, Multicenter, Randomized, Double-blind, Parallel-group, Placebo-controlled, Dose Range Finding Study to Evaluate the Efficacy, Safety, and Tolerability of Nebulized CSL787 in Adults (18 to 85 Years) With Non-cystic Fibrosis Bronchiectasis

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07048262
Enrollment
450
Registered
2025-07-02
Start date
2025-09-03
Completion date
2028-03-28
Last updated
2025-11-07

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

Conditions

Non-cystic Fibrosis Bronchiectasis

Keywords

Chronic respiratory disease, Inflammation, Chronic bacterial infection

Brief summary

This study is a phase 2b, multicenter, randomized, double-blind, placebo-controlled, parallel-group, dose range finding study designed to explore the efficacy, safety, and tolerability of 2 active treatment regimens of CSL787 (immunoglobulin G \[IgG\] inhalation solution) compared with placebo over a period of 6 to 12 months independent of the occurrence of pulmonary exacerbations. The primary aim of the study is to characterize the overall effect of CSL787 as well as the dose response of 2 active treatment regimens of inhaled CSL787 administered to participants with NCFB toward prolonging the TTF exacerbation.

Interventions

BIOLOGICALCSL787

CSL787 high or low doses once daily (QD) will be administered via inhalation over a period of 6 to 12 months.

DRUGPlacebo

Participants will receive a matching volume of placebo QD over a period of 6 to 12 months.

DEVICENebulizer

The nebulizer is a CE-marked device.

Sponsors

CSL Behring
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Intervention model description

This is a randomized, double-blind, parallel-group, placebo-controlled study.

Eligibility

Sex/Gender
ALL
Age
18 Years to 85 Years
Healthy volunteers
No

Inclusion criteria

* Adult between the ages of 18 to 85 years * Primary diagnosis of NCFB confirmed by chest computed tomography (CT) scan, where bronchiectasis has been documented by a radiologist. Diagnosis in the medical records based on historical scans is acceptable if the chest CT scan confirming the participant's NCFB diagnosis was performed within 12 months before enrollment. Participants for whom no chest CT scan results are available within the previous 12 months will undergo a chest CT scan during the Screening Period * Exacerbation history within the previous 1 year defined as either 1 of the following: * \>= 2 documented exacerbations requiring oral and/or intravenous (IV) antibiotic therapy to treat a pulmonary infection. OR * 1 documented exacerbation requiring oral and/or IV antibiotic therapy to treat a pulmonary infection and a St. George's Respiratory Questionnaire (SGRQ) Symptoms score of \> 40 at Screening. * Note: Other medications to treat NCFB such as: oral macrolides, or dipeptidyl peptidase-1 (DPP-1) inhibitors are allowed, provided \>= 1 historical exacerbation occurred while on the medication for \>= 3 months at a stable dose. * Postbronchodilator percentage of the predicted normal forced expiratory volume in 1 second of expiration \[FEV1% predicted\] \> 35% and forced expiratory volume in 1 second (FEV1) \>= 1 liter (L) obtained in accordance with American Thoracic Society (ATS) / European Respiratory Society (ERS) standards for spirometry during Screening and at Baseline.

Exclusion criteria

* History of bronchospasm in response to inhaled therapies including inhaled antibiotics * Known or suspected hypersensitivity, or other severe reactions, to the investigational product (IP), to any excipients of the IP, or to other immunoglobulin. * Primary diagnosis of other pulmonary disorders, including chronic obstructive pulmonary disease (COPD) asthma or, diffuse panbronchiolitis (DPB), as determined by the investigator. * Pulmonary exacerbation requiring antibiotic therapy within the 4 weeks before Baseline.

Design outcomes

Primary

MeasureTime frameDescription
Time to first (TTF) ExacerbationUp to Month 12TTF exacerbation, where an exacerbation is defined as a deterioration in \>= 3 of the following symptoms for \>= 48 hours: cough; sputum volume and / or consistency; sputum purulence; breathlessness and / or exercise tolerance; fatigue and / or malaise; hemoptysis AND a clinician determines that antibiotic therapy is required.

Secondary

MeasureTime frameDescription
Number of Participants Achieving a Clinically Important Difference in the Quality of Life-Bronchiectasis (QoL-B) Respiratory Symptoms ScaleUp to Month 12The QoL-B questionnaire is a self-administered measure assessing symptoms, functioning, and health-related quality of life for patients with NCFB. This questionnaire contains 37 items on 8 different scales (Respiratory symptoms, Physical, Role, Emotional and Social Functioning, Vitality, Health Perceptions, and Treatment Burden). For each scale, scores are standardized on a 0-to-100-point scale; higher scores indicate better health-related quality of life.
Percentage of Participants Achieving a Clinically Important Difference in the QoL-B Respiratory Symptoms ScaleUp to Month 12The QoL-B questionnaire is a self-administered measure assessing symptoms, functioning, and health-related quality of life for patients with NCFB. This questionnaire contains 37 items on 8 different scales (Respiratory symptoms, Physical, Role, Emotional and Social Functioning, Vitality, Health Perceptions, and Treatment Burden). For each scale, scores are standardized on a 0-to-100-point scale; higher scores indicate better health-related quality of life.
Change From Baseline in QoL-B Respiratory Symptoms ScaleFrom Baseline to Months 6 and 12The QoL-B questionnaire is a self-administered measure assessing symptoms, functioning, and health-related quality of life for patients with NCFB. This questionnaire contains 37 items on 8 different scales (Respiratory symptoms, Physical, Role, Emotional and Social Functioning, Vitality, Health Perceptions, and Treatment Burden). For each scale, scores are standardized on a 0-to-100-point scale; higher scores indicate better health-related quality of life.
Annualized Exacerbation Rate (AER) (Exacerbation Event Rate Per-participant Year)Up to Month 12
Number of Participants with Treatment-emergent Adverse events (TEAEs) and Serious Adverse Events (SAEs)Up to Month 13
Percentage of Participants with TEAEs and SAEsUp to Month 13
Change From Baseline in Total Colony-forming Unit (CFUs) for Pathogenic Bacteria Isolated from SputumFrom Baseline to Month 1

Countries

Australia, Japan

Contacts

Primary ContactTrial Registration Coordinator
clinicaltrials@cslbehring.com+1 610-878-4697

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026