Can a new IV drug boost brain recovery after stroke?
NCT ID NCT07742098
First seen Aug 03, 2026 · Last updated Aug 04, 2026 · Updated 1 time
Summary
This trial is testing an experimental drug called NTS-521, given as an intravenous infusion, to see if it can help people recover better after an acute ischemic stroke. The study will include about 140 adults aged 45 to 80 who have moderate to severe weakness on one side of the body due to a recent stroke. Participants will receive one of three doses of NTS-521 or a placebo, and their safety and recovery will be monitored for 90 days, focusing on improvements in arm and hand movement and overall disability.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- NTS-521 (an experimental drug given intravenously)
- What this could lead to
- If successful, this could lead to a new treatment that improves motor recovery and reduces disability after a stroke.
- What could go wrong
- This is an early-phase trial with a small number of participants, so the drug may not prove effective or safe. Possible risks include side effects from the infusion.
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 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 140 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Oct 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2028
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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45 to 80 years
- Sex
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Anyone
- Healthy volunteers
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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 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 Criteria: * Acute ischemic stroke with moderate to severe hemiparesis * Functional independence in activities of daily living without requiring nursing care before the index stroke. * Consent process by participant or proxy, with reconsent provision. * Age ≥ 45 to ≤ 80 years of age (inclusive) on the date of randomization * Sufficient attention, comprehension, and cooperation to carry out instructions Exclusion Criteria: * Pre-existing motor deficit prior to index stroke * Posterior circulation ischemic stroke * Lacunar stroke * Qualifying brain imaging demonstrating intracranial hemorrhage, malignant middle cerebral artery (MCA) infarct with edema, or bilateral/multifocal infarcts, clinically significant vascular malformation, brain tumor, or other central nervous system (CNS) pathology * Recent major surgery or trauma (\<30 days)
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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.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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.
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