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10,000 saliva samples could unlock genetic secrets of france

NCT ID NCT04183023

Knowledge-focused Sponsor: Institut National de la Santé Et de la Recherche Médicale, France Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study aims to collect DNA from 10,000 volunteers across France to create a reference database of common genetic variations. By sequencing 4,000 of these samples, researchers hope to help doctors filter out harmless genetic changes and focus on those that cause disease. Participants provide a saliva sample at home and mail it back. The goal is to improve the accuracy of genetic diagnosis for patients with French ancestry.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this will create a genetic map of the French population, making it easier to identify disease-causing mutations and speed up diagnoses.
What could go wrong
This is an observational study, not a treatment trial. It may not directly benefit participants, and the reference data might not apply to all populations or regions.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

10,250 people

The number who actually took part.

Started

Mar 2021

Expected to finish

Mar 2031

An estimate. End dates often move.

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Participants will be recruited among CONSTANCES cohort volunteers who agreed transmission of their data and provided information about their parents and grandparent birthplaces. Among all those individuals, 15,000 will be randomly selected according the following criteria: * The place of birth of the ascendants is known and clustered in a restricted geographic area (maximum distance between birth places will be defined after analysis of their distribution in the entire dataset), * Demography distribution in metropolitan France.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * participant included in CONSTANCES Cohort and have agreed to transmit their data for research purposes, * participant meeting the geographic criteria of the study, * participant who has given his consent for participating to this study. Exclusion Criteria: * participant who do not have sent back their informed consent or the informed consent is non-complying * participant who do not to have provided a written free informed consent, such as for individuals placed under tutorship or guardianship.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Genetics, population

Contacts and locations

Locations

  • Inserm - UMR1078 GGB

    Brest, France