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 type | Interventional |
|---|---|
| Ages | 18 Years to 90 Years |
| Sex | All |
| Enrollment | 40 (estimated) |
| Sponsor | Weill Medical College of Cornell University Academic / other |
| Drugs / interventions | radiation |
| Locations | 1 site (New York, New York) |
| Status | Recruiting |
| Started | December 18, 2024 |
| Main results expected | December 2028 |
| Study ends | December 2030 |
| Registry record updated | January 26, 2026 |
| Trial ID | NCT06743789 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
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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.
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AI-powered ECG to help diagnose and locate tachycardia in patients with PSVT, WPW, PVC, or VT
A multicenter registry test whether an AI-enabled ECG analysis can help diagnose and localize tachycardia in adults with certain arrhythmias.
-
DuoVT PFA System for Treating Ventricular Tachycardia
This study tests whether the DuoVT Pulsed Field Ablation system can safely and effectively treat Ventricular Tachycardia in people with ischemic heart disease.
-
Sphere VT: Using Sphere-9 Catheter and Affera System to treat recurrent scar-related ventricular tachycardia
This study tests the Sphere-9 catheter and Affera mapping and ablation system in adults with recurring scar-related ventricular tachycardia after a prior heart attack.
-
Parasternal EV-ICD System Pivotal Study
This study tests the Parasternal Extravascular ICD System in adults who need an ICD to see if it can safely provide defibrillation without traditional leads.
-
Real-time intracardiac ultrasound to guide ablation of ventricular arrhythmias
It tests whether using ultrasound inside the heart during PVC or VT ablation can reduce X-ray exposure for adults having these procedures.
-
Arrhythmia mapping with a paddle-shaped multi-electrode catheter
This test uses a new high-density multi-electrode catheter to see if it can safely map atrial and ventricular arrhythmias in adults having catheter mapping and ablation.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.