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New asthma drug shows promise in small trial

NCT ID NCT05280418

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tested tezepelumab, a monoclonal antibody, in 27 adults with uncontrolled moderate-to-severe asthma. The goal was to see if it improves lung function and reduces airway inflammation and blockages. Participants received either tezepelumab or a placebo, and researchers used advanced imaging to measure changes over 16 weeks.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
tezepelumab (a monoclonal antibody)
What this could lead to
If successful, this could lead to a new treatment option that improves lung function and reduces airway blockages in people with uncontrolled asthma.
What could go wrong
This is a small, early-stage study with only 27 participants, so results may not apply to everyone. The drug may not show significant benefits over placebo.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 3

Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.

Participants

27 people

The number who actually took part.

Started

Nov 2022

Finished

Dec 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * General * Able and willing to provide written informed consent. * Able and willing to comply with the study protocol. * Males and females ≥ 18 years of age. * Asthma-related * Asthma diagnosed by a respiratory physician ≥12 months prior to study enrolment based on the Global Initiative for Asthma (GINA) 2021 guidelines. * ACQ ≥1.5 at screening. * Methacholine PC20 ≤ 4 mg/mL OR ≥15% decrease in FEV1 during saline inhalation for sputum induction OR ≥15% improvement in FEV1 after bronchodilator during the screening period. * Criteria met for moderate or severe asthma defined by GINA 2021 guidelines, i.e. treatment with low, medium or high dose ICS (\<250 mcg, 251 - 500 mcg, \>500 mcg of fluticasone equivalent/day respectively) plus another controller. Patients on prednisone would not be excluded, as long as they meet the rest of the inclusion criteria. * FeNO \>25 ppb OR ≥3% sputum eosinophils (preferred) OR blood eos ≥300/µL during the screening period. * History of ≥1 exacerbation in the previous year. Exclusion Criteria: * General \-- Participation in any clinical trial of an investigational agent or procedure within six months prior to screening or during the study. * Medical conditions and treatment history * History of anaphylaxis to any previous biologic therapy received. * Receipt of live attenuated vaccine within 30 days, receipt of COVID vaccine within 28 days, known or suspected COVID infection at the time of enrollment. * Acute or chronic parasitic, bacterial, fungal or viral infections that required, or currently requires, hospitalization or antimicrobial treatment during the last four weeks. * Acute asthma exacerbation event treated with increased doses of oral, or any dose of intramuscular (IM) or intravenous (IV) corticosteroids within six weeks prior to screening. * Other relevant pulmonary diseases (e.g. chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, cystic fibrosis, pulmonary arterial hypertension, tuberculosis) requiring treatment within 12 months prior to screening. * Alcohol or substance abuse within 12 months prior to screening. * Current smoker defined as having smoked at least one cigarette (or pipe, cigar, or marijuana) per day for ≥ 30 days within the three months prior to screening. * Ex-smokers with ≥ 10 pack-year smoking history. * Pregnancy. * Treatment with anti-IgE, anti-IL-4, anti-IL-5, or anti-IL-13 targeted therapy currently or within three months prior to screening. * MRI-related * Patient has an implanted mechanically, electrically or magnetically activated device or any metal in their body which cannot be removed, including but not limited to pacemakers, neurostimulators, biostimulators, implanted insulin pumps, aneurysm clips, bioprosthesis, artificial limb, metallic fragment or foreign body, shunt, surgical staples (including clips or metallic sutures and/or ear implants) (at the discretion of the MRI Technologist). * In the investigator's opinion, subject suffers from any physical, psychological or other condition(s) that might prevent performance of the MRI, such as severe claustrophobia.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Firestone Institute for Respiratory Health

    Hamilton, Ontario, L8N 4A6, Canada

More trials for these conditions

Other studies related to the condition(s) this trial covers.