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RecruitingNCT06871696RaDiCo-GenIDAUpdated Mar 11, 2026

Genetic of Intellectual Deficiency and Autism Spectrum Disorders (RaDiCo-GenIDA)

An observational study in Genetic of Intellectual Deficiency and Autism Spectrum Disorder, sponsored by Institut National de la Santé Et de la Recherche Médicale, France. Recruiting at 1 site in France. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-03-11.

Sponsored by Institut National de la Santé Et de la Recherche Médicale, France · Observational

From the registry’s dates

  • Started Nov 2016; still recruiting 10 years later.
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
1,000
Ages
18 Years and older
Sex
All
01

Study summary

The aim of this observational study is to develop an alternative database model for genetically originated intellectual disabilities. This model will take the form of an online cohort study, where the majority of clinical information will be provided by the families of the patients. Questionnaires developed by professionals but formulated in a way understandable to families will be used to gather this information.

Specifically, this study aims to collect relevant information for personalized medical management. This includes understanding the risks of specific pathological complications and potential iatrogenic effects of symptomatic treatments. The primary goal is to establish groups of individuals with intellectual disabilities and/or autism spectrum disorders (ASD) sharing the same genetic mutation. This approach will provide a better understanding of the natural history of the disease and associated comorbidities.

It is important to note that this project will only focus on patients for whom the identification of the causal mutation or penetrant copy number variation (CNV) has been determined. It excludes individuals for whom the cause of intellectual disability is unknown.

This approach will contribute to a better understanding of the genetic aspects of intellectual disabilities and ASD, while facilitating more targeted and personalized medical care for the affected patients.

02

Conditions studied

  • Genetic of Intellectual Deficiency
  • Autism Spectrum Disorder

Keywords

  • Autism Spectrum
  • Intellectual Disability
  • Rare disease
  • Genetic origin
03

In context

Autism Spectrum Disorder

1,724 studies on the registry are indexed under Autism Spectrum Disorder; 500 are open to participants now.

This study's planned enrollment of 1,000 is above the median of 102 across 320 observational studies indexed under Autism Spectrum Disorder.

Browse Autism Spectrum Disorder studies →

Lead sponsor

Institut National de la Santé Et de la Recherche Médicale, France is the lead sponsor of 378 studies on the registry; 81 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

The studied population includes all patients (and their relatives*) affected by intellectual disability (ID) and/or autism spectrum disorders (ASD) of known genetic origin, on an international scale.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Be a voluntary adult (aged 18 or older)
  • Be a family member (i.e., mother/father) of patients with intellectual disabilities and/or autism spectrum disorders of known genetic origin. This includes monogenic causes as well as recurrent copy number variations (CNVs) such as deletions or duplications. Note: we also allow adult patients to participate directly if they wish and have the capacity to do so.
  • Have knowledge of the genetic cause behind intellectual disabilities or autism spectrum disorders. An exception to this rule is possible for patients with a syndrome that includes intellectual disabilities or autism spectrum disorders, and for whom genetic investigation is considered, with the approval of the project's scientific council (which will define the syndromes eligible for this exception).
  • Have the intellectual and material capabilities to complete an internet questionnaire.
  • Have read the information sheet regarding the study and agreed to the general conditions of participation in the study.

There are no restrictions based on age, gender, or potential comorbidities of the individual themselves.

Exclusion criteria

Exclusion Criteria:

  • Patients affected by the presence of intellectual disability and/or an autism spectrum disorder of unknown genetic origin will not be able to participate in the study, except with the exception mentioned in the previous chapter.
  • It is requested that only adults enter data. However, the collected data may pertain to a minor (in the case of a parent entering data about their minor child)
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
1,000 participants (estimated)
Patient registry
No

Groups and cohorts

  • Institut National de la Santé et de la Recherche Médicale, France
06

What researchers measure

Primary outcomes

  1. Description of the clinical and "para-clinical" characteristics of the disease over time in adult and pediatric patients, depending on the type of genetic anomaly associated with the disease.

    Time frame: Day 1, Every 6 months over 5 years

Secondary outcomes

  1. Identification of new information regarding the challenges faced by individuals with Intellectual Disability/Autism Spectrum Disorder (ID/ASD), based on their age (pediatric/adult) and type of anomaly (genetic/environmental factor).

    Time frame: Day 1, Every 6 months over 5 years

  2. Search for associations between certain phenotypic and genotypic/environmental factor characteristics to which individuals have been exposed.

    Time frame: Day 1, Every 6 months over 5 years

  3. Description of the dynamics of exchanges among families (no access to content, description of the number of participating families, frequency of exchanges, etc.)

    Time frame: Day 1, Every 6 months over 5 years

07

Study locations

1 of 1 sites recruiting
  • RaDiCo-GenIDA
    Paris, Île-de-France Region 75012, France
    Recruiting
    • Sonia Gueguen, PHD · Contactsonia.gueguen@radico.fr · 06 88 34 54 08
    • Jean-Louis Mandel, Pr · Principal investigator
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 11, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06871696
Responsible party
Sponsor
First posted
Mar 12, 2025
Start date
Nov 2016
Primary completion
Nov 2026 (estimated)
Completion
Nov 2026 (estimated)
Last update
Mar 11, 2026

Study contacts

Jean-Louis Mandel, Pr
Contact
jean-louis.mandel@igbmc.fr
03 88 65 32 10

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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