Personalized defibrillator allocation for heart failure patients

Study of Personalized Allocation of Defibrillators in Non-ischemic Heart Failure (SPANISH-1)

NA · Consorcio Centro de Investigación Biomédica en Red (CIBER) · NCT06055504

This study is testing if a personalized method for deciding who gets a heart defibrillator can help people with heart failure just as well as the usual method.

Quick facts

PhaseNA
Study typeInterventional
Enrollment900 (estimated)
Ages18 Years and up
SexAll
SponsorConsorcio Centro de Investigación Biomédica en Red (CIBER) (other gov)
Drugs / interventionschemotherapy
Locations31 sites (Santiago de Compostela, A Coruña and 30 other locations)
Trial IDNCT06055504 on ClinicalTrials.gov

What this trial studies

This study evaluates a personalized approach to implantable cardioverter defibrillator (ICD) allocation for patients with non-ischemic dilated cardiomyopathy and a left ventricular ejection fraction (LVEF) of 35% or less. Participants will be randomly assigned to either a control group receiving standard ICD implantation or an intervention group where ICD implantation is guided by genetic and cardiac magnetic resonance (CMR) findings. The goal is to determine if the personalized strategy is non-inferior in preventing sudden cardiac death compared to the standard approach.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with a diagnosis of non-ischemic dilated cardiomyopathy and an LVEF of 35% or less.

Not a fit: Patients with a history of coronary artery disease or other specific heart conditions may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to more tailored and effective prevention strategies for sudden cardiac death in heart failure patients.

How similar studies have performed: While personalized approaches in cardiology are gaining traction, this specific strategy is novel and has not been extensively tested in prior studies.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 18 years at the time of screening.
* Previously established diagnosis of Non-ischemic DCM
* Optimised medical treatment at maximum tolerated doses for at least 3 months prior to the screening date.
* NYHA functional class II-III.
* LVEF ≤ 35% documented by CMR as study procedure.
* Life expectancy greater than 12 months.

Exclusion Criteria:

* History of coronary artery disease justifying the presence of ventricular dysfunction, defined as: history of coronary revascularisation or presence of significant coronary stenosis (≥50% in left main or ≥70% in a major epicardial artery) on invasive or non-invasive coronary angiography (coronary CT)
* Left ventricular dysfunction attributed to congenital heart disease, valvular disease, alcohol abuse or chemotherapy.
* Hypertrophic or infiltrative cardiomyopathy, active myocarditis or constrictive pericarditis.
* History of recovered sudden death or sustained ventricular tachycardia.
* NYHA functional class IV.
* Waiting list for cardiac transplantation in emergency 0.
* Receiver of a solid organ transplant (lung, liver, heart or kidney).

Where this trial is running

Santiago de Compostela, A Coruña and 30 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.

View on ClinicalTrials.gov →

Conditions: Non-ischemic Dilated Cardiomyopathy

Last reviewed 2026-05-15 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.