Phase I/II Randomized Study of Stereotactic Ablative Radiotherapy (SABR) Versus Standard of Care … (NCT05084391) | Clinical Trial Compass
WithdrawnPhase 1/2
Phase I/II Randomized Study of Stereotactic Ablative Radiotherapy (SABR) Versus Standard of Care for Refractory Structural Cardiac Arrhythmias (SABR-HEART)
Stopped: 0 participant accrual
0Started 2019-09-12
Plain-language summary
Phase I: For the Phase I portion, there will be up to 15 patients treated with SABR and followed for 6 months post-treatment to ensure no significant acute grade 3 or 4 toxicity from SABR treatment. Efficacy as defined below will also be assessed. Following this Phase I lead-in, results will be presented to the FDA for review. Only upon favorable analysis by the FDA committee, and with written explicit permission, will the Phase II randomized portion ensue. This is to act as a safety and efficacy safeguard and has is addressed more thoroughly in the Statistical Analysis Plan of this protocol.
Phase II: A 1:1 randomized Phase II portion with 25 patients in each arm assigned to SABR or current practice (standard of care; Figure 3). Standard of care is defined as nationally recognized appropriate next treatment strategies for medical and catheter-ablation refractory structural cardiac VT that is assessed and judged appropriate for the patient by his/her treating cardiologist. This includes repeat catheter ablation (intravascular and/or epicardial catheter ablation), placement of left-ventricular assist device (LVAD), heart transplant, or further medical management (e.g. antiarrhythmic drug modulation/continuation). Randomization will be performed through the Clinical Trial Conduct (CTC) website.
Who can participate
Age range
18 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion criteria
. ECOG 0-2
. Age 18 years or older
. Diagnosis of recurrent sustained monomorphic VT (MMVT) in the setting of structural heart disease.
. ICD placement and at least two (2) episodes of recurrencerecurrent sustained MMVT that are terminated by anti-tachycardia pacing (ATP) or ICD shocks confirmed by device interrogation in the preceding 3 months, since the last VT ablation procedure in subjected who have failed catheter ablation.
. Failed at least 1 anti-arrhythmic medication (not including beta-blockers) as evidenced by persistent VT (including amiodarone and/or sotalol)
. At least 1 attempted catheter ablation procedure with voltage and/or activation 3D mapping. For patients with ischemic cardiomyopathy this would include failure of at least one endocardial ablation performed at an experienced center. For patients with non-ischemic cardiomyopathy, both endocardial and epicardial ablation should have been attempted unless epicardial ablation/mapping is not feasible (e.g. patient tolerance, deemed futile by EP, prior cardiac surgery).
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
The overall toxicity as assessed using CTCAE v4.0 will be used with SABR compared to next best management practices (standard of care) in treating refractory structural cardiac ventricular tachyarrhythmias (VT).
Timeframe: through study completion, an average of 1 year