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A Study of the Value of Trio Genome Sequencing in the Etiological Evaluation of Early-Onset and/or Atypical Psychiatric Disorders Without Intellectual Disability or Congenital Anomalies

NCT07686653 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 255

Last updated 2026-07-07

No results posted yet for this study

Summary

According to the World Health Organization, one in eight people worldwide has a mental disorder, defined as a significant impairment in thinking, emotional regulation, or behavior. These disorders are classified according to the DSM-5. These psychiatric disorders may be atypical in terms of their age of onset, course of the illness, unusual response to treatment, or classification (significant impact but classified as a "disorder not otherwise specified" by the DSM-5). These disorders can occur sporadically or run in families.

In France, there are no genetic testing recommendations for these patients. A CGH-array analysis may be ordered as part of patient care, as may testing for Fragile X syndrome, depending on the clinical context.

The main hypothesis is that atypical psychiatric disorders result from multifactorial inheritance, involving a combination of common genetic variations and environmental factors. Pangenomic association studies and twin studies have already demonstrated heritability in these psychiatric disorders. It has now been shown that some neurodevelopmental disorders (NDDs) and psychiatric disorders-such as autism spectrum disorders or schizophrenia, for which similar hypotheses were proposed in the past-may result from monogenic inheritance. Furthermore, preliminary indications now allow for the prescription of genome sequencing on the platforms of the France Genomic Medicine Plan 2025.

To date, no study has evaluated the role of high-throughput sequencing in an etiological approach to atypical, non-syndromic psychiatric disorders. Through this study, we aim to assess whether genome sequencing (GS) could be relevant for atypical, non-syndromic psychiatric disorders, which would be the case if it leads to an etiological diagnosis in at least 12% of cases.

The establishment of the GénoPsy network (Centers of Excellence for Behavioral Disorders in Developmental Disorders) creates an environment that is highly conducive to the development of this project.

Conditions

Interventions

BIOLOGICAL

Blood sample

Collection of an EDTA blood sample from the index case and his or her two biological parents

Sponsors & Collaborators

  • Centre Hospitalier Universitaire Dijon

    lead OTHER

Eligibility

Min Age
3 Years
Max Age
50 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-09-30
Primary Completion
2029-05-31
Completion
2029-05-31

Countries

  • France

Study Locations

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Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07686653 on ClinicalTrials.gov