ClinicalTrials.gov record NCT07580872

Early Screening for Cardiac Amyloid Using a History of Bilateral Carpal Tunnel Syndrome

Record copied from ClinicalTrials.gov: Oct 10, 2026AI summaries generated: Sep 23, 2026

Investigations in Early Screening for Cardiac Amyloid Through History of Bilateral Carpal Tunnel Syndrome

About this page. This page shows the study's official ClinicalTrials.gov record ↗, with added help to make it easier to understand. We explain medical terms, highlight key details in plain language, and suggest questions you may want to ask the study team.

The record is periodically copied from ClinicalTrials.gov and may lag behind changes. AI summaries are checked by software, not a clinician.Read moreShow less

The official record is written by the study sponsor and published on ClinicalTrials.gov. It may not always reflect the latest changes. Before making any decisions, please confirm important information with the study team and your own healthcare team.

Where you see "AI summary", AI was used to create a plain-language explanation and software checked it against the source. It has not been reviewed by a clinician, so it may contain mistakes or leave out important details.

StatusNot yet recruitingThe study has been registered but has not started enrolling. Sites and contacts may not be listed yet.

Study typeInterventionalA study in which researchers assign participants to one or more interventions, such as a drug, procedure, device, behavioural programme or other approach, to measure their effects.

Age55 years old and older

SexAll

AI summaryWhat this study is about, in plain languageShow ▾Hide ▴

AI-written from the registry record, not the study's own wording. May contain errors or omissions. Check the registry text on this page and the original record ↗ before acting on it.

This study looks for previously undiagnosed cardiac amyloidosis in people who have a history of bilateral carpal tunnel release surgery. Participants undergo a Technetium-99m pyrophosphate (Tc-99m PYP) heart scan. The study will estimate how common cardiac amyloidosis is in this group.

What it is studying. Whether Tc-99m PYP cardiac imaging detects transthyretin (ATTR) amyloid deposits in the hearts of people with prior bilateral carpal tunnel syndrome, and how common those findings are.

What the researchers hope to learn. To estimate the prevalence of cardiac amyloidosis among people with prior bilateral carpal tunnel syndrome and to identify previously undiagnosed cases using Tc-99m PYP imaging.

What this study is about

The study's own summary, as published on ClinicalTrials.gov. Underlined terms have a short explanation.

Cardiac amyloidosis is a condition where abnormal protein deposits build up in the heart, making it stiff and causing it to work less effectively. One common type is caused by a normal blood protein called transthyretin (TTR), which can become unstable and form these deposits. When this happens, it is called ATTR-CM, a form of heart disease caused by TTR protein buildup. This can lead to symptoms like tiredness, shortness of breath, or swelling. Bilateral carpal tunnel syndrome (CTS) is recognized as an early clinical sign of systemic amyloidosis, especially in the context of TTR amyloidosis, where amyloid deposits accumulate in the median nerve. Early identification of cardiac amyloidosis, particularly in patients with bilateral CTS, may allow for earlier intervention with disease-modifying therapies, such as tafamidis, which has been shown to improve survival and reduce hospitalizations in patients with cardiac amyloidosis. The purpose of this study is to identify patients to evaluate them for previously undiagnosed cardiac amyloidosis. The collected information will help estimate the prevalence of cardiac amyloidosis among participants with prior bilateral CTS using a PYP nuclear scan (technetium-99m pyrophosphate scan). A PYP scan is a special heart imaging test that helps doctors see if certain abnormal proteins are building up in the heart. It's mainly used to help diagnose cardiac amyloidosis.

Interventions being studied

Being studied in this trial does not mean the treatment or procedure is approved or available for this condition.

Diagnostic test: Technetium-99m Pyrophosphate (Tc-99m PYP) Scan

Eligibility

The criteria exactly as listed on ClinicalTrials.gov. Only the study team can say whether they apply to you.

Inclusion criteria

Patients aged 55 and older at the time of surgery.
Patients who have had bilateral carpal tunnel release surgery (i.e., at least two carpal tunnel release surgeries, one for each hand).
Patients who underwent surgery between the years 2010-2015.

Exclusion criteria

Patients under the age of 55 at time of surgery.
Patients who had unilateral carpal tunnel release surgery or surgery on only one hand.
Patients known alternative neurologic diagnosis explaining CTS
Patients with incomplete medical records
Patient denies PYP scan
Previously diagnosed amyloidosis through previous positive PYP, medical notes or self-reported
Patients with prior negative amyloid work up
Cognitive/communication issues without available translation support

Study description and what participation involves

The registry record has no detailed description beyond the summary above.

AI summaryWhat participation may involve, in plain languageShow ▾Hide ▴

AI-written from the registry record, not the study's own wording. May contain errors or omissions. Check the registry text on this page and the original record ↗ before acting on it.

Participants will have a technetium-99m pyrophosphate (Tc-99m PYP) cardiac scan — a nuclear imaging test performed to look for transthyretin (ATTR) amyloid deposits in the heart. The study will use the scan results to determine the presence of cardiac amyloidosis (the primary outcome is measured at 1 year). The registry record does not list other study procedures, visits, or tests.

How the study is structured. Interventional diagnostic study with a single group and no masking. People with a documented history of bilateral carpal tunnel syndrome receive a Tc-99m PYP cardiac scintigraphy scan; the scan results are used to determine the presence of cardiac amyloidosis (primary outcome measured up to 1 year).

Questions you could ask

These questions are suggestions for a conversation with the study team or your own clinician, not advice.

The registry lists this study under Bilateral Carpal Tunnel Syndrome (Diagnosis); Cardiac Amyloidosis. Does it apply to my diagnosis?
The registry says recruitment has not started. When is it expected to open, and can I register interest now?
No sites are listed on the registry yet. Where will the study take place?
Which of the eligibility criteria would need to be checked with tests before I could join?

More on ATTRv amyloidosis

This trial is also listed on this site under wild-type ATTR amyloidosis.

Clinical trials106 trials listed for ATTRv amyloidosisEvery trial the registry lists for ATTRv amyloidosis, with recruitment status, phase and sites, updated from ClinicalTrials.gov.See all trials →Research updatesWhat changed in ATTRv amyloidosis researchLatest monthly update: September 2026. Includes: Gene-silencing drugs. New research summarized each month in plain language, with links to every source paper.Read the latest update →

Important dates

Study start: July 2026 (estimated)
Primary completion: July 2027 (estimated)
Study completion: January 2028 (estimated)
Target enrollment: 139 participants (estimated)
Last updated on registry: May 12, 2026
Data verified: Oct 10, 2026

Sponsor and research team

The lead sponsor funds and oversees the trial. A pharmaceutical or biotech company sponsor typically means the study is testing that company's drug or device; a hospital, university, or government agency usually indicates investigator-initiated or publicly funded research.

Lead sponsor: London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's
Principal investigator: Ryan Davey, Associate Professor, Western University - Lead London Heart Failure Sciences
London Health Sciences Centre Research Institute OR Lawson Research Institute of St. Joseph's

Participating sites

Study locations have not been posted on ClinicalTrials.gov yet. This study is not yet recruiting, so sites may be added when recruitment begins.

Terms used on this page · explanations by MedicalUpdates.ai

Inclusion Criteria: The conditions a person must meet to be considered for the study, for example a confirmed diagnosis, an age range or a test result.
Exclusion Criteria: The conditions that rule a person out even if they meet the inclusion criteria, for example other illnesses, certain medicines or pregnancy.

The study record on this page is reproduced from ClinicalTrials.gov, a database of the U.S. National Library of Medicine, where it was submitted by the study sponsor. MedicalUpdates.ai does not own this content, is not affiliated with or endorsed by ClinicalTrials.gov, NIH, or the U.S. Government, and does not verify the record. Plain-language notes, the glossary and the questions above are added by this site; text in the boxes marked "AI summary" was written by an AI model and may contain errors. Registry records change over time. Check the original record for the current version and discuss eligibility or participation with a qualified healthcare professional.

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