New Genetic Mutations in Thromboembolic Venous Disease Idiopathic. Study "FIT GENETIQUE".

NCT ID: NCT02841085

Last Updated: 2022-03-04

Basic Information

• Recruitment Status: COMPLETED
• Total Enrollment: 613 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2010-05-27
• Study Completion Date: 2021-05-14

Brief Summary

Identify new genetic mutations predisposing to an increased risk of VTE by locating and / or identifying genes involved in subjects at high risk for thrombotic and in whom screening for detectable hereditary thrombophilia was negative.

Detailed Description

Venous thromboembolism desease is a public health problem justifying major primary and secondary prevention policy. When VTE occurs in the absence of risk factor clinically identifiable ( "idiopathic"), an inherited biological risk factor ( "inherited thrombophilia") is found in 30% of cases. However, in patients with idiopathic VTE, the risk of recurrent venous thromboembolism is very high, whether detectable inherited thrombophilia was found or not.

This first observation suggests that patients with idiopathic VTE and no detectable thrombophilia are likely to have an underlying unknown thrombophilia that are yet to be discovered.

This hypothesis is further supported by the results of the study "FIT" (Regional PHRC 2001, promoter CHU Brest, Investigator Main: Francis Couturaud, EA3878 Brest, France, and investigator Associate: Clive Kearon, McMaster University, Hamilton, Ontario, Canada), a cross international study evaluating the risk of VTE among the family members first degree of patients a first idiopathic VTE episode. In this large study cross-1950 family members first degree (topics study) of 372 patients with a first episode of VTE Idiopathic (propositi) were included (50% included in Brest and 50% inclusive in Canada). The main result is that the risk of VTE among family members first degree is high and similar, the proband either bearer or without a detectable hereditary thrombophilia. In other words, even in the absence of detectable hereditary thrombophilia, the risk of VTE among family members first degree is high. This study has identified the subjects in that it is likely they have an inherited thrombophilia which has not yet been discovered.

Conditions

Thromboembolic Venous Disease

Study Design

• Observational Model Type: FAMILY_BASED
• Study Time Perspective: PROSPECTIVE

Study Groups

Genetic sample

Blood sample or saliva collection to genetic research

Genetic sample

Intervention Type: GENETIC

Blood sample or saliva collection

Interventions

Genetic sample

Blood sample or saliva collection

Intervention Type: GENETIC

Eligibility Criteria

Inclusion Criteria

• Family members in the 1st, 2nd, 3rd and 4th degree (and their spouses if they have a descent) of patients (propositi) who:

1. / have a single episode of unprovoked venous thromboembolic disease without detectable inherited and acquired thrombophilia ;

2. / were included in the "FIT" study;

3. / consenting that their family members 2nd, 3rd and 4th degree are approached to participate in the this study.

• Written Consent of propositi and their members in the 2nd, 3rd and 4th respective degree to participate in this study.

Exclusion Criteria

• Presence of detectable thrombophilia in the propositi.
• Presence of hereditary thrombophilia or detectable gained at family members.
• No information may be obtained on previous venous thromboembolism among family members on 1 degree
• Everything about the study (depending on the population and members of proband Family 1st, 2nd, 3rd and 4th degree) less than 15 years.
• The family member is an adopted child

• Minimum Eligible Age: 15 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

University Hospital, Brest

OTHER

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Locations

CHRU de Brest

Brest, , France

Countries

France

Other Identifiers

RB 09.058 Fit Génétique

Identifier Type: -

Identifier Source: org_study_id