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More info
You can access this
clinical trial
if you have
Intellectual Disability
and you are
between 3 and 75
years old
This is an observational trial.
You are contributing to medical knowledge about your condition.
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The purpose

Currently, for a patient with intellectual disability without a recognizable syndrome (most cases), the way to diagnosis is often long, tedious and expensive because different approaches are used one after the other to identify structural variants (duplications, deletions and other) and point mutations (sequencing of one or more candidate genes). The development of high-throughput sequencing techniques (next generation sequencing: NGS) has drastically increased the detection of point mutations offering the possibility to test a large number of genes simultaneously. NGS also shows a huge potential in detecting structural variants. The objective of this research is to assess the sensitivity of a simultaneous detection of point mutations and structural variants by NGS approaches. This would bring together in a single step the equivalent of performing an array-Comparative genomic hybridization (CGH) analysis plus performing a targeted sequencing of candidate genes. Investigators will compare two approaches for this simultaneous detection: a targeted enrichment of candidate genes coding regions using probes covering these regions associated with a backbone of genomic probes, an approach that could be implemented immediately in diagnostic at the hospital, and a whole genome sequencing (WGS), that is currently a too expensive tool for routine diagnosis but that should be the approach used in the future. Investigators will compare these two approaches to the traditional one: CGH array + WGS. The implementation of a "one step" strategy to detect both types of mutations (punctual and structural) would accelerate and improve the access of patients to a molecular diagnosis.

Provided treatments

  • Genetic: Blood samples

Locations near you

Unfortunately, there are no recruiting locations near you. Please check the list with all locations below.
Tris trial is registered with FDA with number: NCT02881333. The sponsor of the trial is University Hospital, Strasbourg, France and it is looking for 30 volunteers for the current phase.
Official trial title:
Evaluation of Tools for the Simultaneous Detection of Point and Structural Mutations in Patients With Intellectual Disability