Evaluation of the Diagnostic Contribution of High-throughput Exome Sequencing for Patients With Convulsive Encephalopathy of Unknown Etiology: Pilot Study to Improve Genetic Counselling (SHD-EE)

August 28, 2018 updated by: Centre Hospitalier Universitaire Dijon

Congenital epileptic encephalopathies (EE) are predominantly genetic in origin. Their diagnosis is hampered by the large number of genes involved and their low recurrence. Genetic study in routine diagnosis is limited by the existing techniques and the development costs. The routine diagnostic implementation of high throughput sequencing pushes these limits. High throughput exome sequencing (ES) showed superior diagnostic performance in all diagnostic settings studied.

This pilot study is dedicated to evaluating the diagnostic performance of high throughput ES in EE, with an implementation and analysis strategy allowing for a direct transfer to routine diagnostics. This novel approach should improve the diagnostic rate while reducing the diagnostic cost per patient.

Study Overview

Status

Completed

Conditions

Study Type

Observational

Enrollment (Actual)

15

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • France
      • Dijon, France, 21000
        • Chu Dijon Bourogne

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

Patient in consultation

Description

Inclusion Criteria:

  • Diagnosis of epileptic encephalopathy, defined by the clinical association of epilepsy and a significant delay in acquisition
  • Family case with recurrence in siblings, suggesting autosomal recessive transmission or X-linked inheritance (with or without parental consanguinity), or sporadic case resulting from inbreeding.
  • Lack of etiologic orientation based on clinical examination.
  • Normal routine diagnostic genetic examinations including a metabolic check-up, array CGH analysis.
  • Brain imaging which does not suggest an acquired cause.

Exclusion Criteria:

  • Unavailable parental samples
  • Diagnostic orientation from one of the tests mentioned above
  • Brain imaging suggesting anoxia sequelae

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Number of diagnoses performed with high throughput ES
Time Frame: Through study completion, an average of 1 year.
Through study completion, an average of 1 year.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Centre Hospitalier Universitaire Dijon

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

September 1, 2013

Primary Completion (Actual)

September 1, 2014

Study Completion (Actual)

December 1, 2014

Study Registration Dates

First Submitted

August 28, 2018

First Submitted That Met QC Criteria

August 28, 2018

First Posted (Actual)

August 29, 2018

Study Record Updates

Last Update Posted (Actual)

August 29, 2018

Last Update Submitted That Met QC Criteria

August 28, 2018

Last Verified

August 1, 2018

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • Masurel-Thevenon AOI 2013

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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