Can a monthly injection replace blood thinners for stroke prevention?
NCT ID NCT07739888
First seen Jul 31, 2026 · Last updated Jul 31, 2026
Summary
This phase 3 trial is testing an investigational drug called abelacimab in about 2,500 people with atrial fibrillation (an irregular heartbeat) who are at high risk for stroke but cannot take standard oral blood thinners. Participants will receive either abelacimab or a placebo, and researchers will track how well it prevents strokes and blood clots, as well as any bleeding side effects. The goal is to see if this injectable treatment offers a safer or more effective option for stroke prevention in this vulnerable group.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- abelacimab (an investigational injectable anticoagulant)
- What this could lead to
- If successful, abelacimab could offer a new way to prevent strokes in people with atrial fibrillation who cannot use standard oral blood thinners, potentially reducing their risk of life-threatening blood clots.
- What could go wrong
- This is a large phase 3 trial, but the drug is still investigational. The main risk is bleeding, which could be serious. It may not prove safer or more effective than existing options, and results are not yet known.
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 3
Large-scale testing in a bigger group. Usually the last step before a treatment can be approved.
- Participants
-
About 2,500 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
-
Dec 2027
An estimate. Start dates often move.
- Expected to finish
-
Dec 2030
An estimate. End dates often move.
- 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
-
65 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 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: * Patients are able to provide written informed consent to enter the extension part. * Patients must be on study treatment at the time of EoT visit in the core part. Exclusion Criteria: * Patients meeting any exclusion criteria in the core part. * Patients who have a history or evidence of any clinically significant disorder, condition, or disease that in the investigator's opinion or Sponsor physician (if consulted), would put the participant at risk or interfere with the study participation * History of hypersensitivity to the study drug or its excipients, to drugs of similar chemical classes * Any medical or psychiatric condition which in the judgment of the Investigator either requires urgent medical intervention/hospitalization or may preclude patients from complying with study requirements for the duration of the study. Other protocol defined Inclusion/Exclusion criteria may apply
Get updates
Get notified about this study
Sign up to get updates when this study changes or when new studies for Atrial fibrillation (AF) are added.
Genom att skicka in godkänner du våra Användarvillkor
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.
-
The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
-
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.
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- Can a checklist and heart monitor stop repeat strokes?
- Can a breathing workout and walks help dialysis patients with irregular heartbeats?
- Zapping the ear: a new way to stop Post-Surgery heart rhythm problems?
- Can a new mapping and ablation system fix recurring atrial fibrillation?
- Can shedding pounds stop atrial fibrillation in its tracks?
- Pacemaker algorithm tuned to Heart's pumping may beat standard rate response