Experimental stroke drug takes first step in human safety trial

NCT ID NCT05547438

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
The trial has finished. Results may not be published yet.
Stopped early This study
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This status has not been confirmed recently, so it may be out of date.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 Jul 16, 2026 · Last updated Jul 24, 2026 · Updated 2 times

Summary

This trial tests the safety of a single intravenous dose of an experimental drug called NTS-104 tris in healthy adults aged 18 to 65. The drug is being developed as a potential treatment for acute ischemic stroke. Researchers will monitor participants for side effects and measure how the drug moves through the body.

What this could mean

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

Active substance
an experimental drug called NTS-104 tris
What this could lead to
If safe, this drug could be tested in people who have had a stroke, potentially helping to limit brain damage.
What could go wrong
This is a very early, small safety study in healthy people, not stroke patients. The drug may not work or could have side effects.

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

48 people

The number who actually took part.

Started

May 2023

Finished

Jan 2026

Lead sponsor

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

18 to 65 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: 1. Participants who provide written informed consent to participate in the study. 2. Healthy males and females between 18 and 65 years (inclusive) of age at the time of signing informed consent. 3. Body mass index (BMI) of 18 to 32 kg/m2 (inclusive) and weighing at least 50 kg at screening. 4. Participants in general good health in the opinion of the Investigator as determined by medical history; vital signs; and physical, neurological, and suicidal ideation examinations. 5. Blood pressure and heart rate within normal limits (blood pressure: systolic 90 to 140 mmHg and diastolic 50 to 90 mmHg; heart rate: 45 to 100 beats per minute) at screening and at admission on Day -1. 6. Female participants must have a negative serum pregnancy test at screening and at admission and be willing and able to use a medically acceptable method of birth control - Acceptable methods of birth control in this study must start one complete menstrual cycle (and at least 30 days) prior to the first day of dosing and continue until 4 weeks after the final follow-up visit. * Acceptable methods of birth control include abstinence, tubal ligation, bilateral tubal occlusion, progestogen-only hormonal contraception associated with inhibition of ovulation (oral, injectable and implantable), combined hormonal contraception (i.e., estrogen- and progestogen-containing), IUS and IUD. * Female participants of non-childbearing potential are defined as either postmenopausal (evidence of menopause based on a combination of amenorrhea for at least one year confirmed with pre-admission serum follicle-stimulating hormone level \[\>30 IU/L\]), or surgical sterilization (evidence of hysterectomy and/or bilateral oophorectomy). * Male participants with a partner who might become pregnant must use reliable forms of contraception during the trial and 4 weeks afterward. Surgical sterilization (vasectomy with documentation of azoospermia) and a barrier method (condom). * The participant's female partner uses oral contraceptives (combined hormonal contraception), injectable progesterone or subdermal implants, and the male partner uses a barrier method (condom) Exclusion Criteria: 1. History of significant medical disorder that, in the opinion of the Investigator, contraindicates administration of the study medications. 2. Any active or current comorbidity with the exception of topical or allergic conditions treated with topical comedication and/or non-drowsy anti-allergic medication or acetaminophen 3. Any use of current comedication at admission or during the 30 days prior to enrollment with the exception of topical dermatological medication and/or non-drowsy anti-allergic medication or acetaminophen 4. Any acute illness (e.g., acute infection) within 72 hours of study drug administration, if considered of significance by the Investigator. 5. Any clinically significant abnormality in safety laboratory tests at screening or admission, in particular a screening TSH test 6. Positive human immunodeficiency virus, hepatitis B, or hepatitis C serology at screening. 7. Specifically, any history or current diagnosis of hepatic impairment at screening and Day - 1 8. Specifically, any history or current diagnosis of renal impairment at screening 9. Specifically, a history of type 1 diabetes mellitus or current type 2 diabetes. 10. Any abnormality on the neurological examination, at screening or enrollment 11. Positive Columbia-Suicide Severity Rating Scale (C-SSRS). 12. Participation in another clinical trial with drugs received within 3 months prior to dosing (calculated from the previous study's last dosing date). 13. Participant who is an active smoker and/or has smoked or used nicotine or nicotine- containing products (e.g., nicotine patch, gum, e-cigarettes) within the past 6 months before enrollment. 14. The use of ketogenic diets within 12 months prior to enrollment. 15. Electrocardiogram (ECG) with clinically significant findings recorded at screening or admission. 17\. Positive coronavirus disease 2019 (COVID-19) test determined at screening and admission (nasal swab). 18\. Known history of alcohol or drug abuse in the past 5 years. 19. Positive urinary drug or cotinine screen determined at screening and admission. 20\. Positive serum alcohol screen determined during the screening period and on admission. 21\. Any other condition, which in the Investigator's opinion, would not make the participant a good candidate for the study. 22\. Blood donation of 500 mL (1 pint) or more: 56 days before the screening visit and until after the follow-up visit. 23\. Plasma donation: 7 days before the screening visit and until after the follow-up visit. 24\. Grapefruit, grapefruit juice, star fruit, pomegranate, and Seville oranges: 7 days before screening and until after the follow-up visit

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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

  • Parexel International EPCU Baltimore 7th floor

    Baltimore, Maryland, 21225, United States

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