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Fibrosis and the Fontan

NCT04901975 · Status: RECRUITING · Phase: PHASE1/PHASE2 · Type: INTERVENTIONAL · Enrollment: 145

Last updated 2025-06-08

No results posted yet for this study

Summary

The purpose of this study is to non-invasively characterize the fibrotic consequences of single ventricle physiology, its possible solution and effect on lymphatics. This project investigates the response to acute imposition of Fontan hemodynamics by examining the interrelationship between liver and cardiac fibrosis/dysfunction and lymphatic congestion along with a pilot trial of the antifibrotic agent, spironolactone, to prevent these consequences and to determine if MRI can discern these differences. The combination of serum biomarkers and MRI form a powerful non-invasive tool in putting together this complicated web of dysfunction.

Conditions

  • Single-ventricle

Interventions

DRUG

Spironolactone

Spironolactone is a mild diuretic. Drug dosage will be those used clinically and per the CHOP formulary: 3 mg/kg/day in divided doses every 6-24 hours; the drug will be weight adjusted every \~0.5 kg with a maximum dosage of 200 mg/24 hours. Maximum single dose is 100 mg. Spironolactone, the aldosterone antagonist to be utilized in Specific Aim 2 of this study, is FDA approved, has been on the market for many years and is routinely administered to all types of children with congenital heart disease including SV patients. The choice of which patient this should be administered to is up to the clinician and their patients and therefore, not all SV patients are on this medication.

Sponsors & Collaborators

Principal Investigators

  • Mark Fogel, MD · Children's Hospital of Philadelphia

Study Design

Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Model
PARALLEL

Eligibility

Min Age
1 Year
Max Age
6 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2021-02-11
Primary Completion
2026-06-30
Completion
2026-06-30
FDA Drug
Yes

Countries

  • United States

Study Locations

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Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT04901975 on ClinicalTrials.gov