Right Ventricular Septal Biopsy to Detect Cardiac Amyloidosis (RV-CAM)

August 21, 2026 updated by: Geisinger Clinic

Right Ventricular Septal Biopsy to Detect Cardiac Amyloidosis in At-Risk Population: A Prospective Study

People eligible for this study have had the suggestion from their doctor to receive a cardiac pacemaker or defibrillator to treat a cardiac condition as part of their routine care. We are doing this study to understand if obtaining a tissue sample from their body during a device implant may assist in the early diagnosis of Transthyretin Cardiac Amyloidosis (ATTR-CM).

Study Overview

Status

Not yet recruiting

Conditions

Detailed Description

The aim of our study is to assess the feasibility of using chest wall fat-pad biopsy and endomyocardial biopsy in early diagnosis of ATTR-CM in at-risk patients undergoing permanent pacemaker implantations.

Specific Objectives:

  • To assess the incidence of ATTR-CM in at-risk patients undergoing permanent pacemaker implantation
  • To develop a workflow for the diagnosis of ATTR-CM in pacemaker-indicated patients
  • To assess the utility of chest wall fat pad biopsy from the pacemaker pocket in the diagnosis of amyloidosis
  • To assess the utility of endomyocardial biopsy at the time of pacemaker implant in the diagnosis of ATTR-CM in an at-risk population

The study team will enroll 70 patients who satisfy inclusion and exclusion criteria. The study team will assess the incidence of amyloidosis and the utility of chest wall fat-pad biopsy, endomyocardial biopsy and deep septal biopsy in the diagnosis of amyloidosis.

Study Type

Observational

Enrollment (Estimated)

70

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

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

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients who are receiving a cardiac device as standard of care in the Geisinger Health System

Description

Inclusion Criteria:

  • Age≥65(or 50-64 with hereditary-ATTR risk: family history of ATTR or known TTR variant)
  • Patients with an indication for permanent pacemaker or CRT or ICD device
  • Patients willing to comply with all study procedures and be available for the duration of the study. And any one of the following:

Diagnosis of atrial fibrillation or sinus node dysfunction Diagnosis of AV block Heart failure with preserved ejection fraction Heart failure with reduced ejection fraction Evidence for infiltrative cardiomyopathy Unexplained renal insufficiency Peripheral neuropathy Family h/o cardiomyopathy Family h/o peripheral neuropathy Carpal tunnel syndrome, unprovoked tendon rupture Hip or knee arthroplasty Unexplained RV or LV wall thickening on echocardiogram Unexplained, persistent low-level elevation of cardiac troponins Unexplained orthostatic hypotension Discordance between QRS voltage on ECG and wall thickness on echo Black race Spinal stenosis IVS thickness ≥ 1.2cm (by TTE or cardiac MRI)

Exclusion Criteria:

  • Inability to provide informed consent
  • Pregnant
  • Enrolled in a concurrent study that may confound the results of this study

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

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Cardiac biopsy results
Time Frame: From enrollment to the end of treatment at 15-21 months.
  • ATTR-CM positive results of fat-pad biopsy, endomyocardial biopsy, and deep septal biopsy
  • Overall percentage of positive results in this high-risk population
From enrollment to the end of treatment at 15-21 months.

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Safety Events
Time Frame: From enrollment to the end of treatment at 15-21 months
Safety events (i.e., pericardial tamponade)
From enrollment to the end of treatment at 15-21 months

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Geisinger Clinic

Investigators

  • Principal Investigator: Pugazhendhi Vijayaraman, MD, Geisinger Clinic

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

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)

October 1, 2026

Primary Completion (Estimated)

April 1, 2028

Study Completion (Estimated)

August 1, 2028

Study Registration Dates

First Submitted

August 21, 2026

First Submitted That Met QC Criteria

August 21, 2026

First Posted (Actual)

August 25, 2026

Study Record Updates

Last Update Posted (Actual)

August 25, 2026

Last Update Submitted That Met QC Criteria

August 21, 2026

Last Verified

August 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2026-0781
  • Clinic Research Fund (Other Identifier: Geisinger)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

This study is to assess feasibility of biopsy in a patient population specifically at Geisinger.

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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