Completed

Cardiovascular Evaluation in Homozygous Familial Hypercholesterolemia Patients

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Study AimThe study aims to observe and describe heart health over time using noninvasive methods in individuals with homozygous familial hypercholesterolemia who have specific LDL receptor defects.
What is being collected

Data Collection

Collected from today forward - Prospective
Who is being recruted

Homozygous Familial Hypercholesterolemic

From 2 to 70 Years
How is the trial designed

Cohort

Tracking disease incidence in order to identify risk factors and understand disease progression over time.
Observational
Study Start: January 1992

Summary

Principal SponsorNational Heart, Lung, and Blood Institute (NHLBI)
Last updated: September 3, 2025
Sourced from a government-validated database.Claim as a partner
Study start date: January 7, 1992Actual date on which the first participant was enrolled.

Familial hypercholesterolemia is a serious genetic condition where the body has trouble handling cholesterol properly, leading to very high levels of "bad" cholesterol, known as LDL, in the blood. This can cause heart disease at an early age. The purpose of this study is to carefully examine the heart health of people with a severe form of this condition, where both copies of the gene are affected. This research aims to understand how heart disease progresses in these patients and to explore who might benefit from treatments like liver transplants or new genetic therapies. Understanding this can lead to better management and potentially life-extending treatments for affected individuals. The study involves regular heart check-ups using techniques that do not involve surgery or entering the body, which are called noninvasive methods. These assessments will be repeated over time to track changes in the heart's condition. By gathering detailed information on how the disease affects the heart, researchers hope to identify those who might experience significant improvements with advanced treatments. The study does not involve any experimental treatment, but instead focuses on collecting detailed data to inform future therapeutic decisions.

Official TitleCardiovascular Evaluation of Homozygous Familial Hypercholesterolemia 
Principal SponsorNational Heart, Lung, and Blood Institute (NHLBI)
Last updated: September 3, 2025
Sourced from a government-validated database.Claim as a partner

Protocol

This section provides details of the study plan, including how the study is designed and what the study is measuring.
Design Details
73 patients to be enrolledTotal number of participants that the clinical trial aims to recruit.
Cohort
These studies follow a group of individuals with common characteristics (such as a condition or birth year) over a specific period to study health outcomes or exposures.

How participants are selected
Participants are selected without using randomization. They may be chosen based on convenience, access, or willingness to participate. This approach is common when random selection isn’t practical.
Another way to select participants is through a probability sample, where participants are chosen randomly, so everyone has an equal chance to be included.

How information is collected
Researchers start collecting data from the present day forward, following participants over time to observe outcomes. This approach helps identify how exposures or behaviors may lead to health events in the future.Other Ways to Collect Data
Retrospective
: These studies use existing medical records or past data.

Cross-sectional
: These studies collect data at one single point in time.

Others
: Some studies use a mix of approaches or less common designs depending on the research goal.

Eligibility

Researchers look for people who fit a certain description, called eligibility criteria: person's general health condition or prior treatments.
Conditions
Criteria
Any sexBiological sex of participants that are eligible to enroll.
From 2 to 70 YearsRange of ages for which participants are eligible to join.
Healthy volunteers not allowedIf individuals who are healthy and do not have the condition being studied can participate.
Conditions
Pathology
Homozygous Familial Hypercholesterolemic
Criteria

* INCLUSION CRITERIA: Fasting cholesterol greater than 500 mg/dl, low density lipoprotein cholesterol greater than 400 mg/dl, and triglycerides less than mg/dl. Family history of hypercholesterolemia and/or cardiovascular disease before the age of 60 years. Tendinous and tuberous xanthomas. Arcus corneae before the age of 30.


Study Plan

Find out more about all the medication administered in this study, their detailed description and what they involve.
Treatment Groups
Study Objectives
One single intervention group 

is designated in this study

This study does not include a placebo group 

Treatment Groups
Group I
Longitudinal sequential cardiologic studies utilizing noninvasive techniques in homozygous patients with well-characterized LDL receptor defects
Study Objectives
Primary Objectives

Descriptive data
Secondary Objectives

Current work has focused on identifying new noninvasive measurements of CAD and quantitating atherosclerosis burden.

Study Centers

These are the hospitals, clinics, or research facilities where the trial is being conducted. You can find the location closest to you and its status.
This study has 1 location
Suspended
National Institutes of Health Clinical CenterBethesda, United StatesSee the location

CompletedOne Study Center