Heart Failure Efficacy and Research Trial (HEART) Platform (HEART)

June 3, 2026 updated by: University of Alberta
The Heart Failure Efficacy and Research Trial (HEART) Platform is a multicenter, randomized platform study designed to improve outcomes for patients with heart failure through the simultaneous and sequential evaluation of multiple interventions across the spectrum of heart failure.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet 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.

Detailed Description

The Heart Failure Efficacy and Research Trial (HEART) Platform is a multicenter, randomized platform clinical trial infrastructure designed to improve outcomes for adults with heart failure through the efficient and continuous evaluation of multiple interventions. The platform enables the simultaneous and sequential testing of therapies across the spectrum of heart failure, with the ability to add, modify, or close interventions ("domains") over time as evidence accumulates and new research questions emerge.

HEART uses a master protocol framework with Domain-Specific Appendices (DSAs) that provide intervention-specific eligibility criteria, procedures, safety monitoring, and outcomes, while using shared platform-wide processes for governance, operations, data collection, and participant protections. This modular documentation structure allows platform updates and domain evolution without requiring complete revisions to all platform components, supporting long-term sustainability and reduced regulatory burden.

Participants are enrolled into one of two mutually exclusive patient states at the time of randomization: (1) State 1: Worsening Heart Failure (WHF), which includes patients hospitalized or treated in the emergency department for acute heart failure requiring active management; and (2) State 2: Ambulatory Heart Failure, which includes stable outpatients with established heart failure receiving ongoing management and without recent heart failure hospitalization. Patient state determines eligibility for specific domains and supports state-specific analyses.

Each HEART domain operates as a semi-autonomous trial within the broader infrastructure, with domain-specific scientific leadership and funding, while benefiting from shared core trial procedures. Domains may be conducted as vanguard/feasibility studies, Phase II trials, or Phase III trials, depending on the maturity of evidence and research objectives, and interventions may advance ("graduate") to later-phase evaluations within the platform.

The default primary endpoint for Phase III trials within the platform is time to first event of death or cardiovascular hospitalization; however, specific primary outcomes are determined at the domain level to match the intervention and development phase.

The HEART Platform incorporates formal governance and safety oversight, including a Platform Steering Committee and independent Data Safety Monitoring Board (DSMB), with standardized adverse event definitions and reporting procedures. The platform is conducted in accordance with Good Clinical Practice, the Declaration of Helsinki, and applicable ethical and regulatory requirements, with ethics approval obtained for the master protocol and each individual domain.

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.
1000

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.
  • Not Applicable

Contacts and Locations

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

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

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

Yes

Description

Inclusion Criteria (HEART Platform)

  • Participants are eligible for inclusion if they meet all of the following:
  • Age ≥18 years (or legal age of majority in participant's country of residence).
  • Diagnosis of heart failure, and eligible to be classified into one of the HEART platform states at the time of randomization:
  • State 1: Worsening Heart Failure (WHF): currently hospitalized for acute decompensated heart failure or emergency department patients requiring intravenous therapy for heart failure; OR
  • State 2: Ambulatory Heart Failure: stable outpatients with established heart failure diagnosis, receiving ongoing HF management and without HF hospitalization within the prior 30 days.
  • Able and willing to provide written informed consent (or consent via a legally authorized representative, where applicable).
  • Meets all applicable domain-specific eligibility criteria for at least one active HEART Platform domain at the time of screening/randomization.

Exclusion Criteria (HEART Platform)

  • Participants will be excluded if any of the following apply:
  • Inability to provide informed consent (and no legally authorized representative available when applicable).
  • Not eligible for assignment to either HEART platform state (State 1 or State 2).
  • Presence of conditions or circumstances that, in the investigator's opinion, would make study participation unsafe or not feasible (e.g., inability to comply with study procedures or follow-up).
  • Does not meet the eligibility requirements for any active HEART Platform domain.
  • Any domain-specific exclusion criteria applicable to the intervention/domain(s) for which the participant would otherwise be eligible.
  • Additional inclusion and exclusion criteria apply for each individual HEART Platform domain and will be specified in the relevant domain protocol(s).

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: Non-Randomized
  • Interventional Model: Sequential 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: Active Domain Intervention(s)
Participants will be randomized to receive one of the active intervention strategies being evaluated within eligible HEART Platform domains at the time of randomization. Eligible domains and interventions may change over time as domains are initiated, modified, or closed.
Other: Domain Intervention(s)
Participants randomized to the experimental arm will receive an intervention being evaluated within an eligible HEART Platform domain at the time of randomization. Domain interventions may change over time as domains are added, modified, or closed in accordance with the platform master protocol and domain-specific protocols.
Placebo Comparator: Control / Standard of Care Comparator
Participants will be randomized to a concurrent control group within eligible HEART Platform domains. The control group may include placebo and/or standard-of-care management, as specified in each active domain protocol.
Other: Control / Standard of Care Comparator
Participants randomized to the comparator arm will receive concurrent control within eligible HEART Platform domains. Control may include placebo and/or standard-of-care management, depending on the domain-specific protocol.

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
Time to first occurrence of all-cause death or cardiovascular hospitalization
Time Frame: Up to 180 days (or as defined in domain-specific protocol)

Time from randomization to the first event of all-cause death or cardiovascular hospitalization. This represents the platform default primary endpoint for Phase III domain evaluations.

Outcomes for each intervention are defined within each HEART Platform domain protocol. The outcome measures listed in this registration represent platform-level outcomes and default endpoints used across domains where applicable.
Up to 180 days (or as defined in domain-specific protocol)

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
Cardiovascular hospitalization
Time Frame: Up to 180 days
Occurrence of cardiovascular hospitalization after randomization.
Up to 180 days
All-cause mortality
Time Frame: Up to 180 days
All-cause mortality after randomization.
Up to 180 days
Heart failure hospitalization
Time Frame: Up to 180 days
Occurrence of hospitalization due to worsening heart failure.
Up to 180 days
Days Alive and Out of Hospital
Time Frame: Up to 180 days
Number of days alive and out of hospital following randomization.
Up to 180 days

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Change in Kansas City Cardiomyopathy Questionnaire Total Symptom Score (KCCQ-TSS)
Time Frame: Baseline to Day 90)

Change in Kansas City Cardiomyopathy Questionnaire (KCCQ) Total Symptom Score from baseline to Day 5 comparing treatment groups.

The Kansas City Cardiomyopathy Questionnaire Total Symptom Score (KCCQ-TSS) ranges from 0 to 100, where higher scores indicate fewer heart failure symptoms and better health status, and lower scores indicate more severe symptoms and worse health status.
Baseline to Day 90)
Safety outcomes (Serious Adverse Events)
Time Frame: Up to 30 days (or through end of treatment/participation)
Incidence of serious adverse events (SAEs) and adverse events of special interest, as defined in the master protocol and domain protocols.
Up to 30 days (or through end of treatment/participation)

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.
University of Alberta

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
Canadian VIGOUR Centre

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Justin Ezekowitz, MD, University of Alberta

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 (Estimated)

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 1, 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.
March 1, 2036

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.
March 1, 2037

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).
January 15, 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.
February 19, 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.
February 23, 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.
June 4, 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.
June 3, 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.
June 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

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.
  • HEART-01

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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