Clinical trial Recruiting at 1 site Interventional Ages 18 to 90

Comparing single vs. multiple doses of radiation for treating ventricular tachycardia

Official title: Dose De-escalation Randomized Phase I/II Trial in Arrhythmia Radioablation for Ventricular Tachycardia: Single Fraction vs Three Fractions

Run by Weill Medical College of Cornell University · NCT06743789 · Data updated 2026-11-12

This study is testing if a single high dose of radiation can effectively treat people with hard-to-treat ventricular tachycardia just as well as giving them three smaller doses.

Quick facts

Study typeInterventional
Ages18 Years to 90 Years
SexAll
Enrollment40 (estimated)
SponsorWeill Medical College of Cornell University
Academic / other
Drugs / interventionsradiation
Locations1 site (New York, New York)
StatusRecruiting
StartedDecember 18, 2024
Main results expectedDecember 2028
Study endsDecember 2030
Registry record updatedJanuary 26, 2026
Trial IDNCT06743789 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults aged 18 and older with structural heart disease and refractory VT who have not responded to standard treatments.

Probably not a fit

Patients under 18, pregnant individuals, or those who have previously received chest radiation therapy may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This research aims to determine whether a single high dose of radiation therapy is as effective and safe as dividing the treatment into three smaller doses for patients suffering from refractory ventricular tachycardia (VT). The study involves randomizing participants into two groups, one receiving a single fraction of radiation and the other receiving three consecutive fractions. The goal is to achieve comparable efficacy while minimizing toxicity to surrounding healthy tissues. This approach could provide a new treatment option for patients who have not responded to conventional therapies.

Why it matters

Potential benefit: If successful, this study could offer a safer and more effective treatment option for patients with refractory ventricular tachycardia.

How similar studies have gone: While the use of radiation therapy for VT is an emerging approach, similar studies have shown promise in treating other arrhythmias, indicating potential for success in this novel application.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 18 years
* Structural heart disease:

  1. Ischemic cardiomyopathy
  2. Non-ischemic cardiomyopathy
  3. Hypertrophic cardiomyopathy
* Refractory VT severity:

  1. VT leading to ICD shock with minimum 3 episodes in any 3-month period without reversible cause;
  2. Failed or intolerant to antiarrhythmic drug therapy (either amiodarone or ≥ 2 AADs) AND failed ablation (CA)
  3. OR ablation (CA) contraindicated
* Ability to understand study protocol and to write informed consent
* Willing to comply with specified pre-, post- and follow-up testing, evaluations and requirements
* Expected to remain available for at least 36 months after enrollment

Exclusion Criteria:

* Age \< 18 years
* Pregnancy
* Prior chest radiation therapy

Where it's running

  • Weill Cornell Medicine
    New York, New York, United States
    Recruiting

Study contacts

  • Principal investigator: Silvia Formenti, M.D. — Weill Medical College of Cornell University
  • Study coordinator: Fabiana Gregucci, M.D.
  • Email: fgr4002@med.cornell.edu
  • Phone: 646 962 3110

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.