Right Ventricular Septal Biopsy to Detect Cardiac Amyloidosis

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

Status

Not yet recruiting

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT07784712

Acronym

RV-CAM

Enrollment

Registered

2026-08-25

Start date

2026-10-01

Completion date

2028-08-01

Last updated

2026-08-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

ATTR-CM (Transthyretin Amyloid Cardiomyopathy), Heart Failure

Keywords

cardiac amyloidosis, cardiac device

Brief summary

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).

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.

Interventions

None listed

Study design

Observational model

CASE_ONLY

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

50 Years to 105 Years

Healthy volunteers

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

Design outcomes

Primary

Measure	Time frame	Description
Cardiac biopsy results	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

Secondary

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

Contacts

CONTACTGrace Hughes, BS, MPH

gehughes@geisinger.edu570-808-3461

PRINCIPAL_INVESTIGATORPugazhendhi Vijayaraman, MD

Geisinger Clinic

Outcome results