Research With I-124 EVuzamitide to Elucidate Cardiac AmyLoidosis

NCT ID: NCT06788535

Last Updated: 2025-12-19

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

PHASE3

Total Enrollment

200 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-01-14

Study Completion Date

2026-02-13

Brief Summary

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The purpose of this Phase 3, open label, single dose imaging study is to evaluate the efficacy and safety of I-124 evuzamitide (radioactive dye) for diagnosing Cardiac Amyloidosis in participants with suspected Cardiac Amyloidosis. The imaging test that will be used in this study is a Positron Emission Tomography Computed Tomography (PET/CT) scan.

Detailed Description

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This Phase 3, open label, single dose study will evaluate the efficacy and safety of I-124 evuzamitide when administered as a single dose prior to a PET/CT scan. Participants will be in the study for up to 60 days and approximately 200 participants with suspected Cardiac Amyloidosis will be enrolled.

Conditions

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Cardiac Amyloidosis

Keywords

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Amyloid Light Chain (AL) Cardiac Amyloidosis Amyloidosis Amyloid Transthyretin (ATTR) Transthyretin (TTR) REVEAL PET Imaging

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

DIAGNOSTIC

Blinding Strategy

NONE

I-124 evuzamitide PET/CT imaging will be evaluated by three (3) independent readers who are blinded to all clinical data.

Study Groups

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Single dose, Open label

Open label use of I124-evuzamitide to diagnose cardiac amyloidosis.

Group Type EXPERIMENTAL

I-124 evuzamitide

Intervention Type DRUG

I-124 evuzamitide, single dose imaging agent, administered intravenously.

Interventions

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I-124 evuzamitide

I-124 evuzamitide, single dose imaging agent, administered intravenously.

Intervention Type DRUG

Other Intervention Names

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AT-01

Eligibility Criteria

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Inclusion Criteria

* Understands the study procedures and can give signed informed consent which includes compliance with the requirements and restrictions listed in the informed consent form (ICF) and in this protocol.
* Male or female ≥18 years of age.
* Is suspected of having cardiac amyloidosis and is undergoing or will undergo a diagnostic evaluation for cardiac amyloidosis (e.g., echocardiography, CMR, bone avid tracer cardiac SPECT, extracardiac or endomyocardial biopsy, etc.). Participants can be enrolled before or during their diagnostic evaluation for cardiac amyloidosis.
* Able to undergo PET/CT imaging as part of the study, including ability to lie supine for approximately 1 hour.
* For women of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive methods that result in a failure rate of \<1% per year during the treatment period and for at least 30 days after administration of I-124 evuzamitide.
* For men: agreement to remain abstinent or use contraceptive measures and agreement to refrain from donating sperm

Exclusion Criteria

* Established diagnosis of cardiac amyloidosis.
* Established diagnosis of systemic amyloidosis (e.g., renal AL or ATTR peripheral neuropathy) without known cardiac involvement. Participants who are amyloid positive only with carpal tunnel tissue or laminectomy are allowed as long as they do not have other known organ involvement.
* Receiving therapy with an approved treatment (e.g., tafamadis) or in a clinical trial for treatment for ATTR cardiac amyloidosis at time of enrollment. For AL and ATTR: Patients may enter the screening period of a clinical trial for treatment after the ICF is signed and participant is enrolled in this trial but may not receive an experimental therapy until after the Day 30 safety follow-up visit in this trial.
* Is pregnant or breast-feeding.
* Is mentally or legally incapacitated, has significant emotional problems at the time of the study, or has a history of psychosis.
* Has a known allergy to potassium iodide.
* Receiving hemodialysis or peritoneal dialysis.
* eGFR less than 15mL/min/1.73m2.
* Myocardial infarction within three (3) months of screening.
* Has severe claustrophobia or any condition, medial or otherwise, that would prevent completion of the study assessments.
* Has any illness that, in the opinion of the investigator, might confound the results of the study or pose additional risk to the participant.
* Has received heparin or heparin analogs (e.g., enoxaparin, dalteparin, fondaparinux) within seven (7) days prior to I-124 evuzamitide administration.
* Known uncorrected thyroid disorders (other than mild elevation of thyroid stimulating hormone with normal T4).
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Attralus, Inc.

INDUSTRY

Sponsor Role collaborator

Sharmila Dorbala

OTHER

Sponsor Role lead

Responsible Party

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Sharmila Dorbala

Director Nuclear Cardiology

Responsibility Role SPONSOR_INVESTIGATOR

Locations

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Mayo Clinic

Scottsdale, Arizona, United States

Site Status

City of Hope - Duarte

Duarte, California, United States

Site Status

University of California

San Francisco, California, United States

Site Status

Yale Cardiovascular Medicine

New Haven, Connecticut, United States

Site Status

Cleveland Clinic

Weston, Florida, United States

Site Status

Northwestern University

Chicago, Illinois, United States

Site Status

Cook County Health

Chicago, Illinois, United States

Site Status

Brigham and Women's Hospital

Boston, Massachusetts, United States

Site Status

Mayo Clinic

Rochester, Minnesota, United States

Site Status

St. Lukes (CVIT) Saint Luke's Health System

Kansas City, Missouri, United States

Site Status

Washington University of St. Louis

St Louis, Missouri, United States

Site Status

Rutgers

New Brunswick, New Jersey, United States

Site Status

Columbia University

New York, New York, United States

Site Status

Duke University

Durham, North Carolina, United States

Site Status

Cone Health

Greensboro, North Carolina, United States

Site Status

Cleveland Clinic

Cleveland, Ohio, United States

Site Status

Oregon Health and Science University

Portland, Oregon, United States

Site Status

Medical University of South Carolina

Charleston, South Carolina, United States

Site Status

Houston Methodist

Houston, Texas, United States

Site Status

Medical College of Wisconsin

Milwaukee, Wisconsin, United States

Site Status

Countries

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United States

References

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Wall JS, Martin EB, Lands R, Ramchandren R, Stuckey A, Heidel RE, Whittle B, Powell D, Richey T, Williams AD, Foster JS, Guthrie S, Kennel SJ. Cardiac Amyloid Detection by PET/CT Imaging of Iodine (124I) Evuzamitide (124I-p5+14): A Phase 1/2 Study. JACC Cardiovasc Imaging. 2023 Nov;16(11):1433-1448. doi: 10.1016/j.jcmg.2023.08.009.

Reference Type RESULT
PMID: 37940323 (View on PubMed)

Clerc OF, Cuddy SAM, Robertson M, Vijayakumar S, Neri JC, Chemburkar V, Kijewski MF, Di Carli MF, Bianchi G, Falk RH, Dorbala S. Cardiac Amyloid Quantification Using 124I-Evuzamitide (124I-P5+14) Versus 18F-Florbetapir: A Pilot PET/CT Study. JACC Cardiovasc Imaging. 2023 Nov;16(11):1419-1432. doi: 10.1016/j.jcmg.2023.07.007. Epub 2023 Sep 6.

Reference Type RESULT
PMID: 37676210 (View on PubMed)

Other Identifiers

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2024P002136

Identifier Type: -

Identifier Source: org_study_id