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Heart radiation zaps deadly rhythms: 4-Year study launches

NCT ID NCT06744530

Disease control Sponsor: Universitaire Ziekenhuizen KU Leuven 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study follows 50 patients with ventricular tachycardia that hasn't responded to standard treatments. They receive a single, high-dose radiation treatment (STAR) aimed at the heart tissue causing the abnormal rhythm. Researchers will track how well the treatment controls the heart rhythm and whether it improves quality of life over 48 months.

What this could mean

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

Active substance
stereotactic radiotherapy ablation (STAR)
What this could lead to
If successful, this could confirm STAR as a safe and effective long-term option for controlling life-threatening heart rhythm problems when other treatments fail.
What could go wrong
This is an observational study with no control group, so results may not prove STAR is better than alternatives. Long-term side effects from heart radiation are still unknown.

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.

Participants

About 50 people

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

Started

Jan 2025

Expected to finish

Dec 2034

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.

Who is studied

All patients with therapy-refractory ventricular tachycardia who are scheduled for stereotactic radiotherapy ablation (STAR) are eligible for participation.

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: * Eligible for STAR for therapy-refractory VT based on a multidisciplinary discussion * Ability to give a written informed consent and willingness to return for follow-up Exclusion Criteria: * Contra-indications for STAR, including pregnancy or breastfeeding, previous radiotherapy with cardiac involvement, life-expectancy \< 6 months in the absence of VT * Any condition that is deemed a contraindication in the judgment of the investigators

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Conditions

The condition(s) this trial relates to.

ventricular tachycardia

As listed by the trial registrant

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

Ventricular tachycardia (VT)

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

  • UZ Leuven

    RECRUITING

    Leuven, 3000, Belgium

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