Clinical trial Recruiting at 2 sites Observational Ages 4 and up

AI analysis of ECGs for high-risk cardiac patients

Official title: Evaluation of Electrocardiographic Data From High-risk Cardiac Patients Using Willem™ Cardiologist-level Artificial Intelligence Software. WILLEM Trial.

Run by Idoven 1903 S.L. · NCT05890716 · Data updated 2026-11-12

This study is testing an AI tool that analyzes heart rhythm patterns in high-risk heart patients to see if it can help doctors catch problems earlier and improve patient care.

More Cardiac Arrest trials

Quick facts

Study typeObservational
Ages4 Years and up
SexAll
Enrollment5342 (estimated)
SponsorIdoven 1903 S.L.
Industry-sponsored
Drugs / interventionschemotherapy
Locations13 sites (Groningen, Provincie Groningen and 12 other locations)
StatusRecruiting
StartedApril 4, 2023
Main results expectedDecember 2026
Study endsDecember 2026
Registry record updatedNovember 6, 2026
Trial IDNCT05890716 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include patients with suspected or diagnosed cardiac arrhythmias or chronic cardiac diseases who have recorded ECG data.

Probably not a fit

Patients with acute coronary syndromes, hemodynamic instability, or those undergoing chemotherapy 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

The WILLEM study is a multicenter observational trial that evaluates an AI-powered ECG analysis platform called Willem™ designed to detect arrhythmias and other abnormal cardiac patterns in high-risk cardiac patients. It aims to automate the classification and prediction of cardiac arrhythmic episodes, potentially delaying or avoiding harmful therapies and severe cardiac events. Patients will be divided into training and test groups to assess the performance of the AI model against expert cardiologist diagnoses, using data collected from various ECG devices. The study will include a follow-up period of over one year to analyze clinical outcomes and model accuracy.

Why it matters

Potential benefit: If successful, this study could lead to earlier detection and better management of cardiac arrhythmias, reducing the risk of sudden cardiac death.

How similar studies have gone: Other studies have shown promise in using AI for ECG analysis, indicating potential for success in this novel approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patient presenting relevant cardiac arrhythmias and cardiac patterns (including supraventricular tachycardias, abnormal ECG patterns, ventricular tachycardias, ventricular fibrillation, pulseless electrical activity or asystole among others) that have been recorded with at least one short-term ECG medical device according to guidelines with ≥1 signal-channel.
* Patient with suspected or diagnosed acute/chronic cardiac diseases (including patients with heart failure, patients with history of cardiac arrhythmias, patients with probable coronary artery diseases, patients with cardiomyopathies, patients with pacemakers or implantable cardioverter-defibrillators (ICD), patients with indication of pacemaker or ICD in current or short-term phase, patients participating in other interventional clinical investigation, patients with hemodynamic instability or acute coronary syndromes, pregnant patients, patients with cancer and chemotherapy, patients with life-expectancy lower than 24 months, patients with in or out-of-hospital cardiac arrest with ventricular fibrillation as first documented rhythm).
* At least one ECG tracing that can be exported in raw data.
* Signed informed consent. Patients unable to consent, it will be requested to an authorized relative.

Exclusion Criteria:

* Unwillingness or inability to sign study written informed consent.
* Unavailable or suboptimal quality of the electrocardiographic signal in raw data.

Where it's running

  • Clínica Universitaria Navarra
    Pamplona, Navarre, Spain
    Recruiting
  • Hospital Universitario de Basurto
    Bilbao, Vizcaya, Spain
    Recruiting
  • University Medical Center Groningen
    Groningen, Provincie Groningen, Netherlands
    Completed
  • Hospital Sant Joan de Déu
    Barcelona, Barcelona, Spain
    Completed
  • Hospital General Universitario de Ciudad Real
    Ciudad Real, Ciudad Real, Spain
    Completed
  • Complejo Hospitalario Universitario A Coruña
    A Coruña, La Coruña, Spain
    Completed
Show 7 more locations
  • Hospital Clínico San Carlos
    Madrid, Madrid, Spain
    Completed
  • Hospital Universitario Puerta de Hierro
    Madrid, Madrid, Spain
    Completed
  • Hospital Universitario General de Villalba
    Madrid, Madrid, Spain
    Completed
  • Hospital Universitario del Henares
    Madrid, Madrid, Spain
    Completed
  • Hospital Virgen de Arrixaca
    Murcia, Murcia, Spain
    Completed
  • Hospital Universitario Nuestra Señora de Candelaria
    Santa Cruz de Tenerife, Santa Cruz de Tenerife, Spain
    Completed
  • Hospital Universitario y Politécnico La Fe
    Valencia, Valencia, Spain
    Completed

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Identifying patients with cardiomyopathy for potential heart transplantation

    This study is trying to find new ways to identify and understand cardiomyopathy in patients to better predict if they might need a heart transplant in the future.

    Recruiting IRCCS Azienda Ospedaliero-Universitaria di Bologna · Bologna, Emilia-Romagna/Bologna and 2 other locations · NCT06813443

  • Observing heart rhythms in patients treated with BTK inhibitors or venetoclax

    This study is testing how Bruton’s tyrosine kinase inhibitors affect heart rhythms in people with chronic lymphocytic leukemia and comparing it to those taking venetoclax to see if there are any risks.

    Recruiting National Institutes of Health Clinical Center (CC) · Bethesda, Maryland · NCT05724121

  • Registry and biobank for arrhythmogenic ventricular cardiomyopathy

    This study is trying to gather information and samples from people with arrhythmogenic ventricular cardiomyopathy and their families to better understand the genetic causes of the condition and improve early diagnosis for those at risk.

    Recruiting at 2 sites Mayo Clinic · Rochester, Minnesota and 1 other locations · NCT03049254

  • Myocardial Energetics Across Cardiovascular Disease Spectrum Using 31P-MRS

    Researchers are testing whether phosphorus-31 magnetic resonance spectroscopy (31P-MRS) can map heart energy metabolism across healthy people and patients with various heart conditions.

    Recruiting Chinese Academy of Medical Sciences, Fuwai Hospital · Beijing · NCT07912086

  • Predict Arrhythmia Risk with Intelligent Software

    Researchers are testing AI-powered predictions to see if clinicians can spot patients at risk for dangerous heart rhythms using bedside ECG data.

    Recruiting Catharina Ziekenhuis Eindhoven · Eindhoven, North Brabant · NCT07792694

  • Liver and Coagulation Markers in ATTR Cardiac Amyloidosis

    This study tests liver function and blood-clotting markers in people with ATTR-CA to see if they reflect disease severity and progression.

    Recruiting University of Messina · Messina, Sicily · NCT07766135

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.