Can a Clot-Dissolving drug given directly into brain arteries open vessels that thrombectomy missed?
NCT ID NCT04201964
First seen Sep 11, 2026 · Last updated Sep 11, 2026
Summary
This pilot study tests whether giving tenecteplase directly into brain arteries after thrombectomy can restore blood flow in acute ischemic stroke patients whose vessels remain partly blocked. Thirty adults with a large vessel blockage in the front of the brain receive the drug through a catheter right after clot removal. Researchers measure how many patients achieve sufficient blood flow and track recovery and early neurological improvement.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- tenecteplase, a clot-dissolving drug given directly into the brain artery after thrombectomy
- What this could lead to
- If it works, this approach could offer a way to open stubborn blocked vessels after thrombectomy and possibly improve recovery for stroke patients.
- What could go wrong
- This is a small, single-arm pilot study with 30 participants and no comparison group, so any benefit is uncertain. Giving a clot-dissolving drug into the brain artery carries a risk of bleeding in the brain.
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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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 30 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2019
- Expected to finish
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Jun 2028
An estimate. End dates often move.
- Lead sponsor
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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
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18 years and older
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Age ≥18 years; 2. Patients who presented with acute ischemic stroke and a large vessel occlusion in the anterior circulation and met the criteria of mechanical thrombectomy; 3. insufficient perfusion (mTICI 1/2a) after endovascular treatment; 4. The availability of informed consent. Exclusion Criteria: 1. Sufficient recanalization (TICI 2b-3); 2. More than 3 times of thrombectomy device passes 3. Hemorrhagic stroke: cerebral hemorrhage, subarachnoid hemorrhage 4. Coagulation disorders, systematic hemorrhagic tendency, thrombocytopenia ( \<100000/mm3) 5. Severe hepatic or renal dysfunction, increase in ALT or AST (more than 2 times of upper limit of normal value), increase in serum creatinine (more than 1.5 times of upper limit of normal value) or requiring dialysis 6. Severe uncontrolled hypertension (systolic blood pressure over 200mmHg or diastolic blood pressure over 110 mmHg) 7. Patients allergic to any ingredient of drugs in our study 8. Unsuitable for this clinical studies assessed by researcher
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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 places running it
1 site. The list below names each one and where it is.
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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.
Contacts and locations
Locations
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General Hospital of Northern Theater Command
RECRUITINGShenyang, 110840, China
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Other studies related to the condition(s) this trial covers.
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