Clinical Investigation and Molecular Forms of Family Disease of Varicose

Completed

• Conditions: Varicose Veins

• Registration Number: NCT02870127
• Lead Sponsor: Nantes University Hospital

Brief Summary

The existence of a family factor in the genesis of varicose veins is certain, but few studies have addressed reliably instead of the genetic factor in clinical and molecular level. The investigator initiated an original study to identify one or more genetic abnormalities predisposing to varicose disease, based on a combined approach of genetic linkage and of exome sequencing. The clinical research phase is an essential prerequisite to the identification of genetic mutations; it is to identify large affected families and ensure an extremely rigorous and accurate phenotyping of individuals over several generations. A first clinical work has identified and / or phenotype 8 families with a genetically informative family suggesting autosomal dominant inheritance. Linkage analysis suggested several candidate chromosomal regions without allowing the identification of a gene. This project aims to resume and expand the Family clinical investigations and apply the techniques of genome analysis points, including exome sequencing on the most informative families to identify the genes and mechanisms responsible of this disease and improve the prevention and the treatment of varicose veins.

Detailed Description

Not available

Basic Information
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Recruitment & Eligibility
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Study & Design
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Trial Locations

Study Timeline

• Study Start: 2013-06-01
• Study First Submitted: 2016-08-12
• Study First Submitted QC: 2016-08-16
• Study First Posted: 2016-08-17
• Primary Completion: 2016-12-19
• Study Completion: 2016-12-19
• Status Verified: 2019-04
• Last Update Submitted: 2019-04-23
• Last Update Posted: 2019-04-24

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 430

Inclusion Criteria

• Any patient consultant the Medicine Vascular Surgery for varicose veins of the lower limbs as part of a manifesto family context
• Varices Presence in at least one family member
• Written consent

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Exclusion Criteria

• Patients who are unable to sign or who refuse to sign an informed consent
• Subjects aged less than 25 years, due to the low penetrance of varicose disease that age.
• Secondary veins at a post-thrombotic disease (suspected by the examination and confirmed by Doppler ultrasonography of the deep venous system)
• Venous angiodysplasia or secondary varicose arteriovenous fistulas.

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Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
genetic abnormalities segregating with the presence of varicose veins in the informative families recruited.	year 4

Secondary Outcome Measures

Name	Time	Method
genotype/phenotype relationship	year 4	improving knowledge of the genotype / phenotype based on genes identified in different families.

Trial Locations

Locations (2)

Nantes Univesrity Hospital; 🇫🇷 Nantes, France

La Roche sur Yon Hospital; 🇫🇷 La Roche sur Yon, France