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New antibody drug ZMA001 enters first human safety trial

NCT ID NCT05967299

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 phase 1 trial tests the safety of a new drug called ZMA001 in 96 healthy adults. ZMA001 is a monoclonal antibody designed to reduce lung damage in pulmonary arterial hypertension (PAH), a serious condition. Participants receive a single dose of the drug or placebo and are monitored for about 16 weeks. This is the first time ZMA001 is given to humans.

What this could mean

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

Active substance
ZMA001 (a monoclonal antibody)
What this could lead to
If successful, this could lead to a new treatment for pulmonary arterial hypertension (PAH), a serious lung disease.
What could go wrong
This is a very early phase 1 trial in healthy people, not patients. It only tests safety and dosing, not whether the drug works for PAH. Many drugs 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

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 96 people

The number the study aims to enrol. It can still change while the study runs.

Started

Nov 2023

Expected to finish

Nov 2027

An estimate. End dates often move.

Lead sponsor

A government research agency

The lead sponsor is the US National Institutes of Health.

Who can take part

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

Ages

18 to 60 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: In order to be eligible to participate in this study, an individual must meet all of the following criteria: 1. Stated willingness to comply with all study procedures and availability for the duration of the study 2. Male\* or female, aged 18 to 60 years, inclusive 3. In good general health as evidenced by medical history 4. Females of childbearing potential agree to use an accepted method of contraception (see below) throughout study participation and for 120 days after study drug infusion. 5. Males sexually active with a female partner must agree to use a condom with spermicide for 120 days after study drug infusion or be surgically sterile for at least 90 days before screening. Males must also agree to not donate sperm for 120 days after study drug administration. 6. Agreement to adhere to Lifestyle Considerations throughout study duration 7. Ability of subject to understand and the willingness to sign a written informed consent document. * Enrollment of healthy male subjects will be limited to no more than 14 out of the total study cohort of 32 in order to ensure an adequate representation of female subjects. Accepted methods of contraception for females of childbearing potential: * Use of an implanted or intrauterine hormonal device for at least 30 consecutive days before study drug infusion * Use of oral, patch or injectable contraceptives or a vaginal hormonal device for at least 30 consecutive days before study drug infusion * Use of a non-hormonal intrauterine device for at least 30 consecutive days before study drug infusion * Two barrier methods such as a diaphragm with spermicide or a condom with spermicide EXCLUSION CRITERIA: An individual who meets any of the following criteria prior to informed consent will be excluded from participation in this study: 1. Pregnancy or lactation. Females of childbearing potential must have a negative serum Beta-human chorionic gonadotropin test no more than 48 hours from study drug infusion. 2. A history of human immunodeficiency virus (HIV) infection. 3. History of severe drug or excipient allergy or hypersensitivity 4. Known allergy to any of the components of the investigational drug or placebo 5. Recent infection or febrile illness within the past 14 days 6. Treatment with another investigational drug within the past 30 days or 5 half-lives, whichever is longer 7. Any vaccination within the past 4 weeks or receipt of a live-attenuated vaccine within the past 6 months 8. Use of tobacco products within the past 3 months 9. Illicit drug use (e.g. cocaine, opioids, methamphetamine, PCP) within the past 6 months or positive urine drug screen at Screening Visit 10. Marijuana (cannabis) use within the past 30 days or positive urine drug screen at Screening Visit 11. History of alcohol abuse within the past 2 years 12. Current clinically significant medical illness that is uncontrolled despite appropriate medical treatment including (but not limited to) hematologic, oncologic, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, infectious, hepatic, dermatologic, psychiatric, neurologic, autoimmune or allergic disease 13. Body mass index less than 17 or greater than 32 kg/m\^2 14. Clinically significant abnormal results on clinical blood testing completed at the Screening Visit 15. Electrocardiographic evidence of clinically relevant heart disease 16. Diabetes mellitus requiring medical treatment 17. Received another monoclonal antibody in the past 30 days 18. Use of herbal supplements, or similar products within the past 2 weeks 19. Blood donation equal to or above 500 mL within 2 months prior to dosing. 20. Any other finding that, in the judgment of the Investigator, would increase the risk of having an adverse outcome from participating in the study. Justification to exclude minors: Given that the vast majority of patients with PAH are \>18 years of age and the fact that this is a first in human study, the risks of including children/minors (ie. subjects \< 18 yrs of age) are not justified given the limited potential benefits of including these subjects. Justification to exclude adults \>60 years old: Subjects \> 60 years of age are more likely to have comorbid medical conditions that could place them at increased risk of participation.

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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.

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • National Institutes of Health Clinical Center

    RECRUITING

    Bethesda, Maryland, 20892, United States

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