Diagnostic Value of the Electrocardiogram in Fabry Disease (DEFY)

December 4, 2017 updated by: University Hospital, Caen
Cardiac complications occur in 78% of patients with Fabry disease and are mainly characterized by a high frequency of left ventricular hypertrophy resulting from an accumulation of GL3 in cardiomyocytes. Apart from family screening, left ventricular hypertrophy is an important factor in the diagnosis of Fabry disease. This left ventricular hypertrophy is more often concentric and homogeneous, but it can also be asymmetric and mimic the patterns seen in so-called familial hypertrophic cardiomyopathies caused by mutations in the sarcomere protein genes. Electrocardiogram has been suggested as a screening tool for Fabry disease. Analysis of the PQ interval would be of interest. An algorithm has even been proposed to differentiate Fabry disease from amyloidosis with excellent sensitivity and specificity. The only criterion of left ventricular hypertrophy used in all studies is the Sokolov-Lyon index, but this index has many limitations and does not appear to be discriminatory for Fabry disease. Other validated criteria for left ventricular hypertrophy, such as the Cornell, Lewis, Gubner index or the Romhilt-Estes point score, have never been tested in Fabry disease. The primary objective of our study is to evaluate the diagnostic value of different electrocardiographic scores of left ventricular hypertrophy in Fabry disease.

Study Overview

Status

Unknown

Conditions

Study Type

Observational

Enrollment (Anticipated)

100

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Probability Sample

Study Population

Patients aged > 18 years, with genetically confirmed Fabry disease complicated by LVH.

Patients aged > 18 years, with sarcomeric hypertrophic cardiomyopathy.

Description

Inclusion Criteria:

  • Patients aged > 18 years, with genetically confirmed Fabry disease complicated by LVH.
  • Patients aged > 18 years, with sarcomeric hypertrophic cardiomyopathy.

Exclusion Criteria:

  • Patients aged < 18 years. Sarcomeric hypertrophic cardiomyopathy for which Fabry disease has not been excluded by alpha-galactosidase A assay (in men) and genetic analysis (GLA gene mutation) in women.

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

Cohorts and Interventions

Group / Cohort
Fabry cardiomyopathy
Hypertrophic cardiomyopathy

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Analysis of the PQ interval with a new algorithm
Time Frame: baseline
Determine whether electrocardiographic criteria of left ventricular hypertrophy allow to distinguish between Fabry disease and sarcomeric hypertrophic cardiomyopathy
baseline

Collaborators and Investigators

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

Sponsor

University Hospital, Caen

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 (Anticipated)

March 1, 2018

Primary Completion (Anticipated)

March 1, 2019

Study Completion (Anticipated)

October 1, 2019

Study Registration Dates

First Submitted

August 29, 2016

First Submitted That Met QC Criteria

December 4, 2017

First Posted (Actual)

December 5, 2017

Study Record Updates

Last Update Posted (Actual)

December 5, 2017

Last Update Submitted That Met QC Criteria

December 4, 2017

Last Verified

November 1, 2017

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 16-005

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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