Treatment Based on High Precision Cardiac Mapping (APOLO-VT)

August 24, 2026 updated by: Ivo Roca, Hospital Clinic of Barcelona

Treatment Based on High Precision Cardiac Mapping: Advancing Personalized Outcomes Through Optimized Localization

APOLO-VT aims to evaluate the feasibility, safety, and clinical impact of an integrated multimodal mapping workflow combining non-invasive structural and functional substrate characterization using Volumetric Electrocardiographic Imaging (ECGi) with invasive Electroanatomical Mapping (EAM) to support Ventricular tachycardia (VT) ablation targeting and verification.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
60

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Spain
      • Barcelona, Spain, 08036
        • Recruiting
        • Hospital Clinic, University of Barcelona
        • Contact:
        • Contact:

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion criteria

  • Age ≥18 years.
  • Diagnosis of structural heart disease (ischemic or non-ischemic cardiomyopathy).
  • Documented sustained monomorphic VT (clinical or inducible), or recurrent ICD therapies for VT.
  • Scheduled for catheter ablation of VT according to current international guidelines.
  • Ability to provide written informed consent.
  • Ability to remain upright or seated to allow a video for 3D torso reconstruction for ECGi acquisition.

Exclusion criteria

  • Age <18 years.
  • Pregnant or breastfeeding women.
  • Inability to provide informed consent due to physical or mental condition.
  • Contraindication to computed tomography or cardiac magnetic resonance (magnetic resonance imaging-incompatible devices, claustrophobia).
  • Contraindication to contrast agents (gadolinium allergy or severe renal dysfunction with estimated glomerular filtration rate <30 mL/min/1.73 m²).
  • Inability to remain upright for torso 3D reconstruction required for ECGi.
  • Life expectancy <1 year due to non-cardiac comorbidity.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Ablation strategy
Ablation is guided by an integrated non-invasive mapping strategy, combining structural targets from late gadolinium enhancement cardiac magnetic resonance and/or functional targets (deceleration zones) from non-invasive Volumetric ECGi in sinus rhythm (SR) and pacing protocol; both are merged with invasive electroanatomic mapping. Before ablation, programmed stimulation assesses VT inducibility; if VT is induced, its Volumetric ECGi-derived critical isthmus is added as a further target. Lesions are delivered to these non-invasively defined target regions, with adequacy defined as loss of local capture on pacing at the ablation site. Afterwards, SR and paced Volumetric ECGi remapping reassesses residual deceleration zones, with further ablation and remapping if substrate persists. Programmed stimulation is repeated, with invasive remapping and ablation for validation. Acute procedural success requires VT non-inducibility and elimination of relevant functional substrate.
Device: ACORYS Mapping System
ADAS 3D (ADAS 3D Medical, Barcelona; CE 714517) and the ACORYS Mapping System (Corify Care SL, Madrid; CE 775709) are two independently operating, CE-marked devices used within their approved intended use. ADAS 3D processes cardiac magnetic resonance images to characterize myocardial scar, border zone, and conduction corridors. ACORYS performs non-invasive electrocardiographic mapping, importing the ADAS 3D-derived anatomy to contextualize its electrophysiological maps. The structural and functional information from both devices is reviewed by the treating electrophysiologist as decision-support information, alongside invasive electroanatomic mapping; the ablation strategy and all treatment decisions remain at the physician's clinical discretion.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
VT recurrence
Time Frame: 12 months
Recurrence of sustained ventricular tachycardia after the index ablation.
12 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Acute procedural outcomes
Time Frame: Baseline
Rate of acute procedural success, defined as non-inducibility of sustained monomorphic ventricular tachycardia and absence of relevant residual deceleration zones on post-ablation remapping. Procedural efficiency (procedure duration, fluoroscopy time, radiofrequency application time).
Baseline
Procedure complications
Time Frame: Baseline
Acute and late complications related to ablation (vascular complications, tamponade, stroke, and mortality) as well as late complications (pericarditis, phrenic nerve injury, device-related events)
Baseline
Electrophysiological endpoints
Time Frame: Baseline
Correlation between non-invasive structural and functional targets (defined by the APOLO-VT ablation strategy) and invasive electrogram characteristics (low-voltage zones, fractionated or late potentials). Assessment of whether these non-invasive targets predict VT inducibility after ablation.
Baseline
Clinical outcomes during follow-up
Time Frame: 12 months
Effect of the APOLO-VT ablation strategy on ICD therapies, heart failure hospitalization, and all-cause mortality during follow-up.
12 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Hospital Clinic of Barcelona

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
July 15, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
December 31, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 31, 2028

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 20, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 31, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 5, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 25, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 24, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2026

More Information

Terms related to this study

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • APOLO-VT

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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