New asthma drug candidate enters first human safety tests
NCT ID NCT06637371
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This early-stage trial is testing an experimental drug called AMG 691 in 21 healthy volunteers and people with mild-to-moderate asthma. The main goal is to see if the drug is safe and how the body processes it. Participants receive either the drug or a placebo as an injection under the skin. This study does not aim to treat asthma but to gather essential safety data before larger trials.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- AMG 691 (an experimental drug given as an injection under the skin)
- What this could lead to
- If this early study shows the drug is safe, it could lead to larger trials testing whether AMG 691 helps control asthma symptoms.
- What could go wrong
- This is a very small, early-phase trial focused on safety, not on whether the drug works for asthma. Many drugs that appear safe in Phase 1 fail in later stages.
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
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Phase 1
The first testing in people. Mainly checks safety and dose, usually in a small group.
- Participants
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21 people
The number who actually took part.
- Started
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Oct 2024
- Expected to finish
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Apr 2027
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 70 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide 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 Part A and B * Participants must be capable of giving informed consent and have provided informed consent. * Participants must be 18 to 65, inclusive at time of signing of informed consent. * Participants must have a Body Mass Index between 18.0 to 30 kg/m\^2 and total body weight ≥ 40 kg at screening. * Participants must be overtly healthy as determined by the investigator based on medical evaluation and study screening procedures. * Female participants must be of non-childbearing potential. Inclusion Part C * Participants must be capable of giving informed consent and have provided informed consent. * Participants must be 18 to 70, inclusive at time of signing of informed consent. * Body mass index between 18.0 to 35 kg/m\^2 and total body weight ≥ 40 kg at screening. * Participants must have documentation of physician diagnosed asthma for ≥ 12 months prior to screening. * Participants must have documented bronchodilator responsiveness of forced expiratory volume in 1 second (FEV1) ≥ 10% in the 10 years before screening or at the screening visit. * Participants must have a pre-bronchodilator percent predicted FEV1 ≥ 50% at screening visit and Day -1. For participants on high-dose ICS, participants must have a percent-predicted FEV1 ≥ 70% at screening visit and on day -1. * Participants must have peripheral blood eosinophils ≥ 200 cells/μl at screening visit and Day -1. * Participants must have a fractional exhaled nitric oxide (FeNO) ≥ 25 ppb at screening visit and Day -1. * Participant must not use inhaled corticosteroids (ICS) or must be treated with low-dose, medium-dose, or high-dose ICS and on a stable dose for a minimum of 12 weeks prior to screening. Exclusion (applicable to all study parts) * History of malignancy (except for in situ cervical cancer or surgically excised non-melanoma skin cancer occurring more than 5 years prior to randomization). * History of anaphylaxis or hypersensitivity to biologic therapy or sensitivity to mammalian derived products. * History of immunodeficiency or history of severe infection within the last 3 years requiring IV antibiotics. * History of tuberculosis (TB), TB symptoms, or positive interferon gamma release assay. * History of untreated or unresolved helminthic infection within 24 weeks of day 1. * Positive human immunodeficiency virus (HIV) antibodies, hepatitis B core antigen, hepatitis B core antibody, or hepatitis C virus (HCV) ribonucleic acid (RNA). * Male participants unwilling to follow contraceptive requirements. Additional Exclusion for Part C only * Female of childbearing potential not willing to use 2 methods of contraception with one being a highly effective method of contraception. * History of pulmonary disease that may interfere with interpretation of study results. * History of upper respiratory infection within 6 weeks of screening. * Asthma Control Questionnaire (ACQ-6) \> 3. * Asthma symptoms or exacerbations requiring 2 or more systemic corticosteroid bursts (≥10 mg/day prednisone or equivalent for ≥ 3 days each) in the previous 12 months. * More than one hospitalization or emergency department visit in the last year. * History of life-threatening asthma exacerbation after the 12 years age requiring admission to intensive care unit.
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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
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Algemeen Ziekenhuis Sint Maarten-Emmaus vzw
Mechelen, 2800, Belgium
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Allergy Asthma and Clinical Research Center
Oklahoma City, Oklahoma, 73120, United States
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Brigham and Womens Hospital
Boston, Massachusetts, 02115, United States
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Chelsea and Westminster Hospital
London, SW10 9NH, United Kingdom
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Chesapeake Clinical Research Inc
White Marsh, Maryland, 21162, United States
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ClinCept, LLC
Columbus, Georgia, 31904, United States
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Clinical Medical and Analytical eXellence CMAX
Adelaide, South Australia, 5000, Australia
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Destiny Research Center
Palmetto Bay, Florida, 33157, United States
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Endeavor Clinical Trials
San Antonio, Texas, 78240, United States
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Mayflower Clinical
South Dartmouth, Massachusetts, 02747, United States
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Mayo Clinic
Rochester, Minnesota, 55905, United States
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Monroe Biomedical Research
Monroe, North Carolina, 28112, United States
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Monroe Biomedical Research
North Charleston, South Carolina, 29406, United States
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North Carolina Clinical Research
Raleigh, North Carolina, 27607, United States
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Orange County Research Center
Lake Forest, California, 92630, United States
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Prism Research LLC dba Nucleus Network
Saint Paul, Minnesota, 55114, United States
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The Medicines Evaluation Unit
Manchester, M23 9QZ, United Kingdom
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Translational Clinical Research LLC
Aventura, Florida, 33180, United States
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University of North Carolina Clinical and Translational Research Center
Chapel Hill, North Carolina, 27599, United States
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VPD Heart and Lung Research Institute
Cambridge, CB2 0AY, United Kingdom
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Winchester District Memorial Hospital
Winchester, Ontario, K0C 2K0, Canada
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