A Study to Assess the Safety, Tolerability, PK and PD of WIN378 in Participants With Moderate - Severe COPD (Sirius)

June 9, 2026 updated by: Windward Bio

A Phase 2 Randomized, Double-blind, Placebo-controlled, Dose-ranging Study to Assess the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of WIN378 in Participants With Moderate - Severe Chronic Obstructive Pulmonary Disease

This study is trying to identify the right dose of a long-acting medicine called WIN378 for people with moderate - severe chronic obstructive pulmonary disease (COPD). WIN378 blocks the action of a protein called TSLP that causes inflammation in the lung and may contribute to COPD control and symptoms. The study will test how doses of WIN378 are handled by the body (pharmacokinetics) and assess the safety of the medicine and markers of COPD inflammation in exhaled breath and blood, lung function and COPD control (pharmacodynamics)

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This is a Phase 2a, multicenter, randomized, double-blind, placebo-controlled, dose-ranging study to evaluate the safety, tolerability, and pharmacokinetics of WIN378 in adult participants with moderate - severe chronic obstructive pulmonary disease (COPD). Participants will continue their standard background COPD therapy. Eligible participants will receive doses of WIN378 or placebo over a 24-week treatment period.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
105

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • Florida
      • Miami Lakes, Florida, United States, 33014
        • Recruiting
        • WB Contracted Clinical Research Site
    • North Carolina
      • Charlotte, North Carolina, United States, 28277
        • Recruiting
        • WB Contracted Clinical Research Site
    • Texas
      • McKinney, Texas, United States, 75069
        • Recruiting
        • WB Contracted Clinical Research Site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Adults aged 40 to 80 years
  • Post-BD spirometry at screening FEV1/FVC < 0.70 and FEV1 30-80% predicted
  • On stable triple inhaled therapy (ICS/LABA/LAMA) for ≥ 3 months
  • Former smoker (≥ 10 pack-year history) and abstinence from smoking for ≥ 6 months
  • Elevated eosinophil count
  • Weight/BMI within allowed range

Exclusion Criteria:

  • Clinically significant pulmonary disease other than chronic obstructive pulmonary disease (COPD)
  • Clinically significant comorbid medical conditions or infections that, in the investigator's judgment, could affect participant safety or interfere with study conduct
  • Clinically significant cardiovascular disease
  • Recent respiratory infection or COPD exacerbation
  • Exposure to approved or experimental biologic therapies for COPD with less than 5 half-life washout period
  • Pregnancy or breastfeeding
  • Smoking or diagnosed substance use disorder
  • Any condition or circumstance that, in the investigator's opinion, would make participation unsafe or compromise study integrity

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: WIN378 Dose 1
WIN378 SC injections will be administered
Drug: WIN378
WIN378 is a fully human, long-acting monoclonal antibody that targets the ligand of thymic stromal lymphopoietin (TSLP), blocking its activity and thereby reducing airway inflammation and improving COPD control over an extended dosing interval
Experimental: WIN378 Dose 2
WIN378 SC injections will be administered
Drug: WIN378
WIN378 is a fully human, long-acting monoclonal antibody that targets the ligand of thymic stromal lymphopoietin (TSLP), blocking its activity and thereby reducing airway inflammation and improving COPD control over an extended dosing interval
Experimental: Placebo
Placebo SC injections will be administered
Drug: Placebo
Placebo matching WIN378

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Number of participants with Adverse Events (AEs)
Time Frame: Week 0 - Week 36
Week 0 - Week 36
Number of participants with Serious Adverse Events (SAEs)
Time Frame: Week 0 - Week 36
Week 0 - Week 36
Change from baseline in systolic blood pressure (mmHg)
Time Frame: Week 0 - Week 36
Week 0 - Week 36
Change from baseline in diastolic blood pressure (mmHg)
Time Frame: Week 0 - Week 36
Week 0 - Week 36
Change from baseline in pulse rate (beats/minute)
Time Frame: Week 0 - Week 36
Week 0 - Week 36
Change from baseline in respiratory rate (breaths/minute)
Time Frame: Week 0 - Week 36
Week 0 - Week 36
Change from baseline in oxygen saturation (%)
Time Frame: Week 0 - Week 36
Week 0 - Week 36
Change from baseline in body weight (kg)
Time Frame: Week 0 - Week 36
Week 0 - Week 36
Change from baseline in body mass index (kg/m^2)
Time Frame: Week 0 - Week 36
Week 0 - Week 36
Change from baseline in body temperature (°C)
Time Frame: Week 0- Week 36
Week 0- Week 36
Change from baseline in clinical chemistry laboratory assessments
Time Frame: Week 0 - Week 36
Clinical chemistry assessments will include serum chemistry (such as sodium, potassium, urea, creatinine) and liver function parameters, including alanine aminotransferase (ALT), aspartate aminotransferase (AST) and bilirubin.
Week 0 - Week 36
Change from baseline in haematology laboratory parameters
Time Frame: Week 0 - Week 36
Haematology assessments will include haemoglobin, white blood cell count, differential white blood cell counts and platelet count
Week 0 - Week 36
Change from baseline in coagulation laboratory parameters
Time Frame: Week 0 - Week 36
Coagulation assessments will include activated partial thromboplastin time, international normalised ratio, prothrombin time and fibrinogen
Week 0 - Week 36
Change from baseline in urinalysis parameters
Time Frame: Week 0 - Week 36
Urinalysis assessments will include protein, pH, blood, glucose and leucocytes
Week 0 - Week 36
Change from baseline in electrocardiogram QT interval
Time Frame: Week 0 - Week 36
Electrocardiogram assessments will include evaluation of QT interval corrected using Fridericia's formula (QTcF)
Week 0 - Week 36
WIN378 Serum concentration (PK)
Time Frame: Week 0 to week 36
Week 0 to week 36

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Change from baseline in Blood Eosinophil Count
Time Frame: Week 0 to Week 24
Week 0 to Week 24
Change in Fractional Exhaled Nitric Oxide (FeNO)
Time Frame: Week 0 to Week 24
Week 0 to Week 24
Change in Pre and Post Bronchodilator Forced Expiratory Volume in 1 Second (FEV1)
Time Frame: Week 0 to Week 24
Week 0 to Week 24
Change in Pre and Post Bronchodilator Forced Vital Capacity (FVC)
Time Frame: Week 0 to Week 24
Week 0 to Week 24
Incidence and magnitude of anti-drug antibodies to WIN 378
Time Frame: Week 0 to Week 36
Week 0 to Week 36

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Windward Bio

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Omar Khwaja, MD, Windward Bio

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 2, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 17, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 7, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
June 2, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 9, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 12, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 12, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 9, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
June 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • WB-2102
  • U1111-1333-4974 (Other Identifier: UTN, World Health Organization (WHO))

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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