- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04051086
Quantification of Elastin Markers Synthesis in Williams-Beuren Syndrome and 7q11.23 Micro-duplication Syndrome (ELAST7)
Introduction: Williams-Beuren syndrome is a rare genetic disorder caused by a 7q11.23 microdeletion. The phenotype associates vasculopathy (arterial stenosis, hypertension), dimorphism and intellectual disability. Microdeletion includes several genes: ELN encodes for elastin and the haplo-insufficiency (only 1 functional copy) causes vasculopathy.
The primary objective is to quantify plasma and urinary levels of elastin peptides in Williams-Beuren patients and 7q11.23 micro-duplication syndrome patients in order to correlate the levels of these markers with the number of copies of ELN gene (proportional positive relationship "gene copy number - circulating levels of markers) Materials and Methods: This prospective study will be carried out in Lyon at the "Hôpital Femme-Mère-Enfant" for 2 years. 3 groups of patients will be studied: Williams-Beuren patients (N=20), micro-duplication 7q11.23 syndrome patients (N=10) and healthy patients (N=60). Subjects will be followed for 1 day.
Clinical examination (weight, height, blood pressure) and biological sample collection (blood and urine sample) will be carry out for Williams Beuren and micro-duplication 7q11.23 patients group. A large majority of visits will be part of patients' usual care. A large part of patients are systematically seen in consultation once a year. For healthy group, only biological sample collection will be carry out. The PE concentrations will be assessed and compared between the three groups of patients.
Study Overview
Status
Intervention / Treatment
Study Type
Enrollment (Anticipated)
Phase
- Not Applicable
Contacts and Locations
Study Contact
- Name: Massimiliano ROSSI, Dr
- Phone Number: +33 04 27 85 55 72
- Email: Massimiliano.rossi@chu-lyon.fr
Study Contact Backup
- Name: Linda PONS, Dr
- Phone Number: +33 04.27.85.51.43
- Email: linda.pons@chu-lyon.fr
Study Locations
-
-
-
Bron, France, 69677
- Hôpital Femme Mère Enfant - Hospices Civils de Lyon
-
Contact:
- Massimiliano ROSSI, Dr
- Phone Number: +33 04 27 85 55 72
- Email: Massimiliano.rossi@chu-lyon.fr
-
Contact:
- Linda PONS, Dr
- Phone Number: +33 04.27.85.51.43
- Email: linda.pons@chu-lyon.fr
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Principal Investigator:
- Massimiliano ROSSI, Dr
-
Sub-Investigator:
- Patrick EDERY, Pr
-
Sub-Investigator:
- Damien SANLAVILLE, Pr
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Sub-Investigator:
- Aurélia BERTHOLET-THOMAS, Dr
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Sub-Investigator:
- Aurélie PORTEFAIX, Dr
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Sub-Investigator:
- Lionel BOUVET, Dr
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Age : from 3 months to 60 years old
- Williams Beuren group : Diagnosis confirmed with FISH
- Micro-duplication 7q11.23 group : Diagnosis confirmed with CGHarray
- Healthy Group : no cardiovascular and neurological medical history
- Informed consent
Exclusion Criteria:
- No social insurance
- Subject under judicial protection
- Subject participating in another research including an exclusion period still in progress
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Other
- Allocation: Non-Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Other: Williams Beuren
Subjects aged from 3 months to 60 years with a diagnosis confirmed with FISH of Williams Beuren syndrome.
|
Only one visit for each participant : A large majority of visits will be part of patients' usual care
|
Other: Micro-duplication 7q11.23
Subjects aged from 3 months to 60 years with a diagnosis confirmed with CGHarray of micro-duplication 7q11.23 syndrome.
|
Only one visit for each participant : A large majority of visits will be part of patients' usual care
|
Other: Healthy Group
Subjects without cardiovascular and neurological medical history.
|
Only one visit for each participant
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Plasma level of elastin peptides (PE)
Time Frame: 1 day
|
To quantify plasma level of elastin peptides in participants in order to correlate the levels of these markers with the number of copies of ELN gene (proportional positive relationship "gene copy number - circulating levels of markers). The primary endpoint will be assessed by measuring the blood level of PE between groups |
1 day
|
Urinary level of elastin peptides (PE)
Time Frame: 1 day
|
To quantify urinary level of elastin peptides in participants in order to correlate the levels of these markers with the number of copies of ELN gene (proportional positive relationship "gene copy number - circulating levels of markers). The primary endpoint will be assessed by measuring the urinary level of PE between groups |
1 day
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Correlation between blood level of PE and cardiovascular involvement in patients.
Time Frame: 1 day
|
Blood level of PE will be correlated with the presence / severity of cardiovascular disease
|
1 day
|
Correlation between urinary level of PE and cardiovascular involvement in patients.
Time Frame: 1 day
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Urinary level of PE will be correlated with the presence / severity of cardiovascular disease
|
1 day
|
Blood level of PE in treated and untreated minoxidil patients
Time Frame: 1 day
|
Blood levels of PE in the samples of patients who participated in the minoxidil clinical trial will be compare to those of participants of this study
|
1 day
|
Urinary level of PE in treated and untreated minoxidil patients
Time Frame: 1 day
|
Urinary levels of PE in the samples of patients who participated in the minoxidil clinical trial will be compare to those of participants of this study
|
1 day
|
Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (Anticipated)
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
- Pathologic Processes
- Heart Diseases
- Cardiovascular Diseases
- Nervous System Diseases
- Neurologic Manifestations
- Neurobehavioral Manifestations
- Disease
- Congenital Abnormalities
- Genetic Diseases, Inborn
- Aortic Valve Disease
- Heart Valve Diseases
- Intellectual Disability
- Chromosome Disorders
- Aortic Valve Stenosis
- Aortic Stenosis, Supravalvular
- Syndrome
- Vascular Diseases
- Williams Syndrome
Other Study ID Numbers
- 69HCL18_0368
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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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