Stroke drug aims to boost brain recovery after clot removal

NCT ID NCT05559398

What the study statuses mean

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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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 08, 2026 · Last updated Jul 09, 2026 · Updated 1 time

Summary

This clinical trial tests whether adding the drug glenzocimab to standard endovascular therapy (a procedure to remove blood clots) improves recovery in people with acute ischemic stroke. The study includes adults aged 18 and older who are eligible for clot removal within 24 hours of stroke onset. The main goal is to see if glenzocimab reduces disability at 90 days compared to placebo.

What this could mean

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

Active substance
glenzocimab
What this could lead to
If successful, glenzocimab could become a standard add-on treatment to improve recovery and reduce disability after a stroke.
What could go wrong
This is a mid-stage trial with only 108 participants, so results may not be conclusive. The drug may not improve outcomes or could cause bleeding risks.

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 2/3

Runs two stages together: whether the treatment works, then large-scale confirmation.

Participants

108 people

The number who actually took part.

Started

Jan 2023

Finished

Jul 2025

Lead sponsor

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

18 years and older

Sex

Anyone

Healthy volunteers

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

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 or older (Age≥18 years) 2. No significant pre-stroke disability (pre-stroke mRS must be equal to 0 or 1); 3. Indication of EVT within the time-window of 0 to 24 hrs in participants treated with or without intravenous thrombolysis; 4. Participants presenting with a target mismatch defined by an initial infarct volume (ischemic core) of less than 70 ml, a ratio of volume of ischemic tissue to initial infarct volume of 1.8 or more, and an absolute volume of potentially reversible ischemia (penumbra) of 15 ml or more on magnetic resonance imaging (MRI) or, when this is not possible, on perfusion computed tomography (CTP); 5. Occlusion of the cervical or intracranial internal carotid artery (ICA) or the proximal middle cerebral artery (MCA - M1 and M2), on magnetic resonance angiography (MRA) or, when this is not possible, on CT angiography (CTA); 6. Informed consent signed: * By the patient * Or informed consent signed by a family members/trustworthy person if his condition does not allow him to express his consent by written as per L. 1111-6, * In a situation urgently and in the absence of family members/trustworthy person, the patient can be enrolled. The consent to participate to the research will be requested as soon as the condition of the patient will allow him to consent. 7. Post-menopausal women defined as not having menses for 12 months without an alternative medical cause. For WOCBP, a highly effective birth control method should be in place that can achieve a failure rate of less than 1% per year that should last for at least 2 months after IMP administration. Birth control methods which may be considered as highly effective in WOCBP include: * combined (estrogen and progestogen containing) hormonal contraception associated with inhibition of ovulation (intravaginal, transdermal), * progestogen-only hormonal contraception associated with inhibition of ovulation (injectable, implantable) * intrauterine device (IUD), * intrauterine hormone-releasing system (IUS), * bilateral tubal occlusion, * vasectomized partner, Birth control methods which may be considered as highly effective for men and that should last for 4 months after IMP administration include: * vasectomy, * use of condom combined with a highly effective birth control method for their WOCB partner. Please note that hormonal contraception is a risk factor for thromboembolic events and attention should be called to reconsider it passed the acute stroke phase. 8. Women of child-bearing potential must have negative results of a plasma pregnancy test (serum betaHCG). 9. Affiliation to social security or any health insurance Exclusion Criteria: 1. Contraindications to EVT; 2. Contraindication to contrast agents 3. Pre-existing neurologic and psychiatric disease with mRS ≥ 3; 4. Unknown symptom's onset; 5. Patients under or needing immediate DAPT administration; 6. Patients previously treated by tenecteplase within 24 hrs; 7. Significant mass effect with midline shift as confirmed on CT/MRI; 8. Gastrointestinal or urinary tract hemorrhage in previous 21 days; 9. Patient with intracranial haemorrhage 10. Platelet count \<100 000 mm3; 11. Pregnant or breastfeeding woman; 12. Known hypersensitivity to glenzocimab or to any of the excipients; 13. Severe renal insufficiency (Grades 4-5) with a glomerular filtration rate \< 30mL/Min/1.73m2; 14. Participation in another interventional clinical trial within 30 days prior to the inclusion. 15. Persons deprived of their liberty by a judicial or administrative decision, persons subject to psychiatric care under sections L.3212-1 et L.3213-1 and persons admitted to a health or social institution for purposes other than research (L.1121-6) 16. Adults subject to a legal protection measure (L.1121-8) 17. The patient or his/her family (if the patient is unable to give his/her opinion) expresses an inability to return for protocol visits 18. patients receiving anticoagulants, as already mentioned in the non-authorized concomitant treatments 19. patients who have already received another humanized fragment of monoclonal antibody with a suspicion of hypersensitivity

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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

  • CHRU Nancy Hopital central

    Nancy, France

  • CHRU Tours - Hôpital Bretonneau

    Tours, France

  • CHU Dupuytren

    Limoges, France

  • CHU Timone

    Marseille, France

  • Hospices Civils de Lyon

    Bron, France

  • Hôpital Foch

    Suresnes, France

  • Hôpital Gui de Chauliac

    Montpellier, France

  • Hôpital Lariboisière AP-HP

    Paris, France

  • Hôpital Pierre Paul Riquet

    Toulouse, France

  • Hôpital Sainte Anne

    Paris, France

  • Hôpital de Hautepierre

    Strasbourg, France

  • Hôpital fondation Adolphe de Rothschild

    Paris, France

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