Updated May 2026 · ClinicalTrials.gov

RECRUITINGPhase 2INTERVENTIONAL

Venous Ethanol for Ventricular Tachycardia

Q: What is the NCT05511246 clinical trial studying?

Comparative effectiveness randomized clinical trial, comparing endocardial radiofrequency ablation alone vs radiofrequency ablation combined with venous ethanol in patients with ischemic ventricular tachycardia -Venous Ethanol for Left Ventricular Ischemic Ventricular Tachycardia -VELVET clinical trial The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Q: Who can participate in NCT05511246?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

Q: How do I contact the trial site for NCT05511246?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Q: Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Q: Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

Venous Ethanol for Ischemic Left Ventricular Tachycardia

Venous Ethanol for Ventricular Tachycardia (NCT05511246) is a Phase 2 interventional studying Ventricular Tachycardia and Ischemic Cardiomyopathy, sponsored by The Methodist Hospital Research Institute. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

About This Trial

What Stage of Research Is This?

Phase 2 trials evaluate whether a treatment actually works against Ventricular Tachycardia and continue monitoring side effects. Phase 2 enrolls larger groups (typically 100–300 patients) and produces the first real efficacy signal. A successful Phase 2 readout is what unlocks the much larger Phase 3 confirmatory trials needed for FDA approval.

This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.

Target enrollment of 156 participants puts this in the typical range for a Phase 2-style efficacy study or a moderate Phase 3 trial in a focused Ventricular Tachycardia subpopulation. At this scale, the study has enough statistical power to detect a clear treatment effect but is not the largest cohort in the field.

Who May Be Eligible (Plain English)

Who May Qualify: - Male and female, ages of 18 and 85 years and with a prior ICD implant - Diagnosed with ischemic cardiomyopathy: Prior myocardial infarction (pathological Q waves or imaging evidence of regional myocardial akinesis/thinning in the absence of a non-ischemic cause) - One of the following VT events (within last 6 months): a) ≥3 episodes of VT treated with anti-tachycardia pacing (ATP) or anti-arrhythmic drugs; b) ≥1 appropriate ICD shocks; c) ≥3 VT episodes within 24 hr; d) sustained VT below detection rate of the ICD documented by EKG/cardiac monitor - Patients deemed candidates for RF ablation of VT - Able and willing to comply with pre-, post-, and follow-up requirements - Willing to sign the willing to sign a consent form Who Should NOT Join This Trial: - Serum creatinine \>1.5 mg/dL, or creatinine clearance \<30 ml/min - Left ventricular (LV) ejection fraction ≤10% - Mobile LV thrombus on echocardiography - Absence of vascular access to the LV - Disease process likely to limit survival to \<12 months - New York Heart Association class IV heart failure - Cardiac surgery within the past 2 months (unless VT was incessant), - Acute coronary syndrome in the past 2 months (acute thrombus diagnosed by coronary angiography, or dynamic ST segment changes demonstrated on EKG) - Another reversible cause of VT (e.g. electrolyte abnormalities, drug-induced arrhythmia) - Severe aortic stenosis or mitral regurgitation with a flail leaflet - Pregnancy - Unwilling or unable to provide willing to sign a consent form - Covid-19 positive testing within 14 days of randomization procedure - Enrolled, or planning to get enrolled, in another research study during his/her participation on the Velvet trial Always talk to your doctor about whether this trial is right for you.

These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.

Original Eligibility Criteria

View original clinical language

Inclusion Criteria: * Male and female, ages of 18 and 85 years and with a prior ICD implant * Diagnosed with ischemic cardiomyopathy: Prior myocardial infarction (pathological Q waves or imaging evidence of regional myocardial akinesis/thinning in the absence of a non-ischemic cause) * One of the following VT events (within last 6 months): a) ≥3 episodes of VT treated with anti-tachycardia pacing (ATP) or anti-arrhythmic drugs; b) ≥1 appropriate ICD shocks; c) ≥3 VT episodes within 24 hr; d) sustained VT below detection rate of the ICD documented by EKG/cardiac monitor * Patients deemed candidates for RF ablation of VT * Able and willing to comply with pre-, post-, and follow-up requirements * Willing to sign the informed consent Exclusion Criteria: * Serum creatinine \>1.5 mg/dL, or creatinine clearance \<30 ml/min * Left ventricular (LV) ejection fraction ≤10% * Mobile LV thrombus on echocardiography * Absence of vascular access to the LV * Disease process likely to limit survival to \<12 months * New York Heart Association class IV heart failure * Cardiac surgery within the past 2 months (unless VT was incessant), * Acute coronary syndrome in the past 2 months (acute thrombus diagnosed by coronary angiography, or dynamic ST segment changes demonstrated on EKG) * Another reversible cause of VT (e.g. electrolyte abnormalities, drug-induced arrhythmia) * Severe aortic stenosis or mitral regurgitation with a flail leaflet * Pregnancy * Unwilling or unable to provide informed consent * Covid-19 positive testing within 14 days of randomization procedure * Enrolled, or planning to get enrolled, in another research study during his/her participation on the Velvet trial

Treatments Being Tested

DRUG

Venous ethanol

Cannulation of coronary vein or veins in the VT substrate and balloon injection of ethanol

PROCEDURE

Catheter ablation

Endocardial catheter ablation of VT substrate

Locations (1)

Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.

Houston Methodist Hospital

Houston, Texas, United States

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT05511246), the sponsor (The Methodist Hospital Research Institute), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.

Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.

Authoritative Sources

The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.

Frequently Asked Questions

What is the NCT05511246 clinical trial studying?

Comparative effectiveness randomized clinical trial, comparing endocardial radiofrequency ablation alone vs radiofrequency ablation combined with venous ethanol in patients with ischemic ventricular tachycardia -Venous Ethanol for Left Ventricular Ischemic Ventricular Tachycardia -VELVET clinical trial The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Who can participate in NCT05511246?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

How do I contact the trial site for NCT05511246?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

How This Page Is Built

Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.

Source: ClinicalTrials.gov API v2 record for NCT05511246. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT05511246. Data: ClinicalTrials.gov."

Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.

Last updated 2026-05-08 · Data from ClinicalTrials.gov.