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New scan could spot hidden amyloid in heart and organs

NCT ID NCT05758493

Diagnosis Sponsor: Oregon Health and Science University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests a radioactive imaging agent called Iodine-124 evuzumitide (AT-01) in 150 people with systemic amyloidosis. The goal is to see how well it detects amyloid deposits in the heart and other organs using PET/MRI or PET/CT scans. If accurate, it could become a new tool for diagnosing and tracking this rare disease.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Iodine-124 evuzumitide (AT-01), a radioactive imaging agent
What this could lead to
If successful, this could provide a more accurate and non-invasive way to diagnose cardiac amyloidosis, helping doctors detect the disease earlier and monitor its spread.
What could go wrong
This is a Phase 2 diagnostic study, not a treatment trial. The imaging agent may not prove accurate enough to replace current methods, and results may not apply to all types of amyloidosis.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2

Tests whether the treatment actually works, and watches for side effects, in a larger group.

Participants

About 150 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2023

Expected to finish

Mar 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

40 to 90 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Subjects will at least have one of the following conditions: systemic amyloidosis with known organ involvement, carrier of a known pathogenic mutation in the transthyretin gene, multiple myeloma, and monoclonal gammopathy of undetermined significance 2. Patient willing to consent for the study and undergo the study procedures. Exclusion Criteria: 1. Has severe claustrophobia or any medical condition that would prevent completion of the imaging protocol 2. Has a known allergy to potassium iodide treatment or to gadolinium. 3. Patients on dialysis or those with eGFR \<30 cc/min/1.73 m2 will be excluded from undergoing gadolinium-enhanced cardiac MRI. 4. Has received heparin or heparin analogs (e.g., enoxaparin, dalteparin, fondaparinux) within 7 days prior to 124I-Evuzumitide administration

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Conditions

The condition(s) this trial relates to.

amyloidosis familial amyloid neuropathy primary systemic amyloidosis wild type ATTR amyloidosis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Amyloidosis Transthyretin amyloidosis

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Oregon Health & Science University

    RECRUITING

    Portland, Oregon, 97239, United States

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