Condition category
Date applied
Date assigned
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Plain English Summary

Background and study aims
Cardiac amyloidosis is a disease in which proteins accumulate in the heart muscle resulting in loss of its function. In this study, we evaluate a commercially available radioactive imaging compound (Flutemetamol), that has been designed to stick to these accumulated proteins, in the diagnosis of cardiac amyloid disease. Flutemetamol is currently used in the imaging of Alzheimer’s disease, to detect protein accumulation in the brain. In this study, we will assess the safety and effectiveness of using Flutemetamol to detect cardiac amyloidosis.

Who can participate?
Participants are recruited from participating study centers in Finland. The requirement for participation is previously diagnosed or excluded cardiac amyloidosis.

What does the study involve?
Participants will undergo imaging of the heart using positron emission tomography (PET) imaging. Radioactive dye (Vizamyl) is administrated intravenously to arm vein. Scanning takes 30 minutes. For selected patients, another 15-minute image is acquired after 1-hour.
Participants will be given the opportunity to have another imaging scan on a different day, using a different radioactive dye. There are no follow up visits. Patient records are then checked at 1, 3, and 5 years after the imaging to assess any complications arising from the use of the radioactive dye.

What are the possible benefits and risks of participating?
The study might not offer additional health benefits to individual participants.
The safety of Flutemetamol is established in previous studies and is routinely used in patient care. It’s side effects are rare and generally mild. The physician will inform each participant on possible side effects.

Where is the study run from?
Helsinki University Hospital (Finland)

When is the study starting and how long is it expected to run for?
January 2019 to December 2025

Who is funding the study?
1. Helsinki University Hospital (Finland)
2. Sakari Alhopuro Foundation (Finland)
3. Flutemetamol compound is sponsored by General Electric Healthcare (Finland)

Who is the main contact?
Dr. Valtteri Uusitalo,

Trial website

Contact information



Primary contact

Dr Valtteri Uusitalo


Contact details

Vaskiniementie 1
+358 (0)405358011

Additional identifiers

EudraCT number

Nil known number

Nil known

Protocol/serial number


Study information

Scientific title

Clinical validation of quantitative flutemetamol PET/CT in cardiac amyloidosis


Study hypothesis

The aim of this study is to validate flutemetamol PET for imaging of cardiac amyloidosis.

Ethics approval

Approved 13/02/2020, Helsinki University Hospital district Ethical Committee (HUS ethical committee I, HUS Töölön sairaala, PL 266, 00029 HUS, Finland; +358 (0)403594618;, ref: HUS/896/2019

Study design

Longitudinal observational multicenter imaging study

Primary study design


Secondary study design

Longitudinal study

Trial setting


Trial type


Patient information sheet

Not available in web format, please use the contact details below to request a patient information sheet


Cardiac amyloidosis including light chain and transthyretin amyloidosis


The study aims to validate commercially available positron emission tomography radiotracer Flutemetamol (Vizamyl) to diagnose cardiac amyloidosis. We evaluate the difference in myocardial radiotracer kinetics and signal intensity in patients with no amyloidosis, transthyretin amyloidosis or light chain amyloidosis.

Participants for this study undergo positron emission tomography (PET) imaging. It is similar to computed tomography scanning. Radioactive dye Vizamyl is administrated intravenously to arm vein. Scanning takes 30 minutes. For selected patients, another 15-minute image is acquired at 1-hour. PET imaging is painless and doctor discusses possible side-effects of the procedure with each individual before the imaging.
The possibility to participate to further amyloid scintigraphy ("amyloid scan") imaging is offered to those individuals without previous amyloid scintigraphy. Amyloid scintigraphy is a standard procedure similar to PET imaging. It is obtained on a different day using well-established radioactive imaging dye (HMDP).
There are no further follow-up visits after the imaging. Individuals receive a summary of their imaging results by letter and can discuss the results with a principal investigator afterwards if necessary.

To assess the prognostic significance of cardiac Flutemetamol accumulation: follow-up data on diagnoses of heart failure, heart failure hospitalization and total mortality is collected from patient records and Finnish national statistical service (time points 1, 3 and 5 years).

Intervention type



Drug names

Primary outcome measure

Mortality measured using records from the Finnish national statistical service database at 1, 3 and 5 years

Secondary outcome measures

1. Heart failure measured using patient records diagnoses at 1, 3 and 5 years
2. Heart failure related hospitalizations measured using patient records at 1, 3 and 5 years

Overall trial start date


Overall trial end date


Reason abandoned (if study stopped)


Participant inclusion criteria

Previous clinical suspicion of cardiac amyloidosis and currently know the status of their disease (e.g. no amyloidosis, light chain disease, transthyretin)

Participant type


Age group




Target number of participants


Participant exclusion criteria

1. Pregnancy
2. Age below 18 years
3. Unknown cardiomyopathy

Recruitment start date


Recruitment end date



Countries of recruitment


Trial participating centre

Helsinki University Hospital
Meilahti Nuclear Medicine Center Haartmaninkatu 4

Trial participating centre

Päijät-Häme Nuclear Medicine Center
Päijät-Hämeen keskussairaala Isotooppilaboratorio Keskussairaalankatu 7

Sponsor information


Helsinki University Central Hospital

Sponsor details

Haartmaninkatu 4 Rakennus 1
+358 (0)504271445

Sponsor type

Hospital/treatment centre



Funder type

Hospital/treatment centre

Funder name

Helsingin ja Uudenmaan Sairaanhoitopiiri

Alternative name(s)

Helsinki University Central Hospital, HUS

Funding Body Type

government organisation

Funding Body Subtype

Local government



Funder name

Sakari Alhopuro Foundation

Alternative name(s)

Funding Body Type

Funding Body Subtype


Funder name

GE Healthcare

Alternative name(s)

Funding Body Type

private sector organisation

Funding Body Subtype

For-profit companies (industry)


United Kingdom

Results and Publications

Publication and dissemination plan

Planned publication in high-impact peer-reviewed cardiology journal.

IPD sharing statement
Sharing of raw data is considered upon reasonable request. Request can be sent to the principal investigator (Dr. Valtteri Uusitalo,

Statistical anonymized data can be shared in the case of possible research collaboration when cleared by Helsinki University Hospital ethical board. Study participants consent has not been collected for further data sharing and thus must be cleared by Helsinki University Hospital ethical board and legal counsel case-by-cases basis. Imaging data cannot be routinely shared outside our study due to legal restrictions. Data requests are considered for 3 years after the end of the study.

Intention to publish date


Participant level data

Available on request

Basic results (scientific)

Publication list

Publication citations

Additional files

Editorial Notes

23/09/2020: Trial’s existence confirmed by GE Healthcare.