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Neuro-Degenerative DiseaseNEURONGS3NCT04621422

Contribution of New Generation Oxford Nanopore-type High-throughput Sequencing in the Diagnostic Strategy of Neurogenetic Diseases.

An observational study of Neuro-Degenerative Disease, run by University Hospital, Bordeaux.

Unknown status

Status not confirmed. The sponsor has not verified this record for over two years, so it may be out of date.

Official record
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Trial summary

Since 2012, NGS sequencing of long fragments or long reads has developed in various fields of research and today presents itself as a very promising alternative solution in the analysis of repeat amplifications. Read more about this study

Who is it for?
Ages 0 years and older
Conditions the study is for
Neuro-Degenerative Disease
What is being tested?
Subject carrying an amplification of nucleotide repeats in one of the following 9 genes FMR1, DMPK, ZNF9, SCA2, JPH3, HD, FXN, C9ORF72, RFC1
Type of treatment
Vaccines
How many people
60 participants
Where
No sites listed yet
Study dates
Dec 2020to Jan 2023
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 0 years and older
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Study population: Subject carrying an amplification of nucleotide repeats in one of the following 9 genes FMR1, DMPK, ZNF9, SCA2, JPH3, HD, FXN, C9ORF72, RFC1

Who may be able to join

  • minors, adults and protected adults.
  • Subject carrying an amplification of nucleotide repeats in one of the following 9 genes FMR1, DMPK, ZNF9, SCA2, JPH3, HD, FXN, C9ORF72, RFC1
  • DNA available in sufficient quantity (5 to 10 µg)

Who cannot join

  • DNA degraded or of medium size <30kb,
  • Patient objection to research - This patient objection must be reached to the center's investigator within 1 maximum period of 1 month after sending the information note.

Trial locations and contacts

No sites are listed yet.

About this study

Since 2012, NGS sequencing of long fragments or long reads has developed in various fields of research and today presents itself as a very promising alternative solution in the analysis of repeat amplifications. The Oxford Nanopore NGS automaton offers the prospect of bringing together 1st and 2nd line analyzes of all loci potentially indicated in neurogenetics at the same time. The project aims to compare the use of this new technology with methods currently used in reference laboratories.

The main objective is to evaluate the ability of next-generation high-throughput Oxford Nanopore-type sequencing (NEURONGS3) to diagnose 9 neurogenetic diseases compared to reference protocols via PCR (+/- Southern blot).

The secondary objective is to evaluate the repeatability of the NGS (intra-sample reproducibility) analysis in the diagnosis of 8 neurogenetic diseases.

Read the detailed description

Since 2012, NGS sequencing of long fragments or long reads has developed in various fields of research and today presents itself as a very promising alternative solution in the analysis of repeat amplifications. The Oxford Nanopore NGS automaton offers the prospect of bringing together 1st and 2nd line analyzes of all loci potentially indicated in neurogenetics at the same time. The project aims to compare the use of this new technology with methods currently used in reference laboratories.

Multicenter cross-sectional early phase diagnostic study on already existing biological collections. Analyzes with the new technique (NGS) will be carried out blinded to the results obtained with the current reference algorithm based on the sequential performance of PCRs The main objective is to evaluate the ability of next-generation high-throughput Oxford Nanopore-type sequencing (NEURONGS3) to diagnose 9 neurogenetic diseases compared to reference protocols via PCR (+/- Southern blot).

The secondary objective is to evaluate the repeatability of the NGS (intra-sample reproducibility) analysis in the diagnosis of 8 neurogenetic diseases.

Being tested
Subject carrying an amplification of nucleotide repeats in one of the following 9 genes FMR1, DMPK, ZNF9, SCA2, JPH3, HD, FXN, C9ORF72, RFC1

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Subject carrying an amplification of nucleotide repeats in one of the following 9 genes FMR1, DMPK, ZNF9, SCA2, JPH3, HD, FXN, C9ORF72, RFC1Biological

    Biological/Vaccine: DNA Samples collection as part of usual care

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Proportion of patients tested positive by Next Generation Sequencing among all the patients tested positive by the current algorithm based on PCRs

    For each of the 9 considered diseases, the proportion will be established as well as its 95% confidence interval.

    Measured: through study completion, an average of 2 years

Secondary outcomes (1)
  1. Difference between the number of repetition amplifications found by the Next Generation Sequencing method and the number of repetition amplifications found by the PCR diagnosis method

    For each of the 9 considered diseases, the number of repetition amplifications found by the Next Generation Sequencing method will be compared to the number of repetition amplifications found by the PCR diagnosis method using the Bland et Altman graphs. The average and standard deviation of the difference will be calculated.

    Measured: through study completion, an average of 2 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted9 Nov 2020
  2. Study startDec 2020 (estimated)
  3. Primary completionJun 2022 (estimated)
  4. Study completionJan 2023 (estimated)

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Case only
Time perspective
Retrospective
Enrolment
60 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04621422
Sponsor's protocol ID
CHUBX 2019/51
Acronym
NEURONGS3
Status last verified
Oct 2020
First submitted
12 Oct 2020
Last updated
9 Nov 2020
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Questions about this trial

What is this clinical trial studying?

An observational study of Neuro-Degenerative Disease, run by University Hospital, Bordeaux.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 3 inclusion and 2 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: status not confirmed, as of the sponsor's last update on 9 Nov 2020. Status can change between updates, so confirm with the study contact before making plans.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

Results are not available in the source record.

How can a doctor refer a patient or contact the research team?

Contact Cyril Goizet (05 56 79 59 52, cyril.goizet@chu-bordeaux.fr), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Proportion of patients tested positive by Next Generation Sequencing among all the patients tested positive by the current algorithm based on PCRs (time frame: through study completion, an average of 2 years). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 9 Nov 2020.

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