Should doctors go after stubborn small clots after a stroke? new trial aims to find out
NCT ID NCT07533253
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at stroke patients who have small clots remaining in smaller brain arteries after the main clot has been removed. Half will get an extra procedure to remove those leftover clots, while the other half will receive standard care without extra intervention. The goal is to see if the extra procedure is safe and leads to better recovery. About 72 participants will be followed for 90 days.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- mechanical thrombectomy procedure
- What this could lead to
- If successful, this could show that removing leftover small clots after the main clot is removed improves recovery and reduces disability after a stroke.
- What could go wrong
- This is a small, early-phase trial with only 72 participants, so results may not apply to all stroke patients. The extra procedure also carries risks like bleeding or vessel damage.
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 72 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2029
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.
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: * Age ≥ 18 years * Acute ischemic stroke with proximal large vessel occlusion (M1, M2, ICA, or basilar artery) treatable with mechanical thrombectomy * Presence of one or more persistent distal occlusions (M2-M4, A1-A5, or P1-P5) after successful proximal mechanical thrombectomy * The participant is considered suitable for either rescue distal mechanical thrombectomy or conservative management in the event of persistent distal occlusion * Informed consent obtained from the participant or authorized representative, in accordance with the protocol and local regulations Exclusion Criteria: * Poor expected 3-month prognosis due to comorbid conditions * Opposition by the participant or, in emergency inclusion circumstances, by an authorized representative
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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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Centre hospitalier de l'Université de Montréal (CHUM)
Montreal, Quebec, H2W 0C1, Canada
More trials for these conditions
Other studies related to the condition(s) this trial covers.
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- Can PET scans reveal hidden heart inflammation after a stroke?
- Can an implanted heart monitor catch hidden irregular heartbeats after stroke?
- China builds national watchdog for brain blood vessel devices
- Cancer patients face a hidden Second-Stroke threat, and 24 hospitals are mapping it
- Can tiny neural exosomes help the brain heal after a severe stroke?