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Can a simple blood thinner keep brain tumor patients safe from clots?

NCT ID NCT05683808

Prevention Sponsor: University of Vermont Medical Center Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study is testing whether the blood thinner apixaban can safely prevent blood clots in people newly diagnosed with a fast-growing brain tumor called grade 4 glioma. About 40 adults will take apixaban while receiving standard radiation and chemotherapy. The main goal is to see if the drug causes serious bleeding, and the secondary goal is to check if it actually prevents clots.

What this could mean

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

Active substance
apixaban (a blood thinner)
What this could lead to
If it works, this could point toward a safe way to prevent blood clots in brain tumor patients, reducing hospitalizations and complications.
What could go wrong
This is a small, early-phase trial with only 40 participants, so results may not apply to everyone. The main risk is bleeding, including in the brain, which could be serious.

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

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 40 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2023

Expected to finish

Jun 2027

An estimate. End dates often move.

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: * Histologic diagnosis of malignant glioma, World Health Organization (WHO) grade 4, including glioblastoma and astrocytoma, based on recent biopsy or resection. * Age 18 and old * Karnofsky performance status (KPS) 60-100 * Acceptable labs, including platelets of greater than or equal to 100,000, glomerular filtration rate (GFR) greater than or equal to 25. * Ability to provide informed consent. * Planning for treatment with radiation and chemotherapy. Exclusion Criteria: * Evidence of deep venous thrombosis (DVT), pulmonary embolism (PE), or cerebral vein thrombosis (CVT) within 6 months prior to enrollment on the study. * Pregnancy. * Significant bleeding risk including: history of symptomatic intracranial hemorrhage, active bleeding at time of study registration, clinically significant bleeding within 14 days of study registration, intracranial trauma in the past 6 months, including stroke or traumatic brain injury, major surgery or major procedure within 48 hours. * Allergy to apixaban or contraindication to prophylactic anticoagulation. Contraindications include patients who are currently on unfractionated heparin, low molecular weight heparin, heparin derivatives (examples: fondaparinux), or other direct oral anticoagulants (examples: dabigatran, edoxaban, rivaroxaban), who are either unable or unable to discontinue these agents in favor of the investigational drug. Apixaban is also contraindicated in patients who are on strong CYP3A4 inhibitor and P-glycoprotein inhibitors. * Indication for full anticoagulation (i.e. atrial fibrillation, mechanical valve, etc.). * Estimated life expectancy of \<3 months.

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Conditions

The condition(s) this trial relates to.

astrocytoma (excluding glioblastoma) glioblastoma glioma venous thromboembolism prevention target

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Astrocytoma Glioblastoma Venous thromboembolism

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. 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

  • University of Vermont Medical Center

    RECRUITING

    Burlington, Vermont, 05401, United States

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