STereotactic Ablative Radiosurgery of Recurrent Ventricular Tachycardia in Structural Heart Disease

NCT ID: NCT04612140

Last Updated: 2025-06-04

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

22 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-10-01

Study Completion Date

2024-06-30

Brief Summary

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A multicentre trial on clinical effects of radiosurgical ablation of ventricular tachycardia (VT).

Detailed Description

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Patients with previously failed conventional RF catheter ablation will be randomized to radiosurgery (active treatment group) or repeated catheter ablation (control treatment group). Details on inclusion and exclusion criteria are provided below.

Randomization Eligible patients will be assigned to 2 treatment arms - radiosurgery (active arm) or repeated catheter ablation (control arm) in 1:1 fashion by covariate-adaptive randomization algorithm considering age, gender, etiology of structural heart disease (SHD), left ventricular (LV) ejection fraction, and serum B-type natriuretic peptide (NT-proBNP) level.

Conditions

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Ventricular Tachycardia

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

The study subjects will be randomized into one of the two study arms.
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

No masking will be used in the study.

Study Groups

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Radiosurgery

Eligible patients will be assigned to 2 treatment arms - radiosurgery (active arm) or repeated catheter ablation (control arm) in 1:1 fashion by covariate-adaptive randomization algorithm considering age, gender, etiology of SHD, LV ejection fraction, and serum NT-proBNP level.

Group Type EXPERIMENTAL

Radiosurgery

Intervention Type PROCEDURE

The study subjects randomized in this study arm will undergo a radiosurgery procedure.

Repeated catheter ablation

Eligible patients will be assigned to 2 treatment arms - radiosurgery (active arm) or repeated catheter ablation (control arm) in 1:1 fashion by covariate-adaptive randomization algorithm considering age, gender, etiology of SHD, LV ejection fraction, and serum NT-proBNP level.

Group Type ACTIVE_COMPARATOR

Repeated catheter ablation

Intervention Type PROCEDURE

The study subjects randomized in this study arm will undergo repeated catheter ablation.

Interventions

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Repeated catheter ablation

The study subjects randomized in this study arm will undergo repeated catheter ablation.

Intervention Type PROCEDURE

Radiosurgery

The study subjects randomized in this study arm will undergo a radiosurgery procedure.

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

1. Patients with structural heart disease (SHD) of any etiology (ischemic, non-ischemic, congenital corrected or uncorrected)
2. Implanted implantable cardioverter-defibrillator (ICD) or cardiac resynchronization therapy-defibrillator (CRT-D)
3. Prior ≥1 catheter ablation procedure for VT due to SHD of them the last one performed in the expert center and employed:

3.1 all meaningful mapping/ablation approaches (endocardial/epicardial access to left / right ventricular substrate as possible or appropriate) 3.2 precise electroanatomical mapping of the arrhythmogenic substrate in anticipation of future radiosurgery 3.3 additional mapping of structures used for precise image integration (aortic arch, left main ostium, right ventricular endocardial surface)
4. VT recurrence after the last catheter ablation fulfilling all criteria as follows:

4.1 clinically relevant and requiring further intervention 4.2 compatible with the previously characterized arrhythmogenic substrate 4.3 occurred on stable antiarrhythmic medication (mostly amiodarone) unless contraindicated 4.4 reversible cause excluded
5. Signed an Institutional Review Board (IRB)-approved written informed consent

Exclusion Criteria

1. Age \< 20 years
2. Acute coronary syndrome or recent percutaneous coronary intervention or cardiac surgery (\< 3 months)
3. Primary electrical disease (channelopathy)
4. Pregnancy or breastfeeding
5. Chronic heart failure with New York Heart Association (NYHA) Class IV
6. Serious comorbidities with presumed life expectancy less than one year
7. Significant peripheral artery disease precluding retrograde aortic mapping
Minimum Eligible Age

20 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Institute for Clinical and Experimental Medicine

OTHER_GOV

Sponsor Role collaborator

Hospital Podlesi

OTHER

Sponsor Role collaborator

University Hospital Ostrava

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Jakub Cvek, Ass.Prof.,MD,Ing, PhD,MBA

Role: PRINCIPAL_INVESTIGATOR

University Hospital Ostrava

Locations

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Hospital Podlesí

Třinec, Moravian-Silesian Region, Czechia

Site Status

Institute for Clinical and Experimental Medicine

Prague, , Czechia

Site Status

Countries

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Czechia

References

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Other Identifiers

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STAR-VT 2020

Identifier Type: -

Identifier Source: org_study_id

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