Ignite Creation Date:
2025-12-18 @ 9:50 AM
Ignite Modification Date:
2025-12-18 @ 9:50 AM
Study NCT ID:
NCT04099914
Status:
None
Last Update Posted:
2022-04-12 00:00:00
First Post:
2019-09-09 00:00:00
Is Possible Gene Therapy:
False
Has Adverse Events:
False
Brief Title:
Validation of a Clinical Algorithm for the Diagnosis of Recessive Ataxias
Sponsor:
None
Organization:
Study Overview
Official Title:
Exploitation of a BAse of Genetic Data (Obtained by Next Generation SEquencing) for the Validation of a Clinical Algorithm for the Diagnosis of Recessive Cerebellar Ataxias
Status:
None
Status Verified Date:
2022-04
Last Known Status:
None
Delayed Posting:
No
If Stopped, Why?:
Not Stopped
Has Expanded Access:
False
If Expanded Access, NCT#:
N/A
Has Expanded Access, NCT# Status:
N/A
Acronym:
BASE-AAR
Brief Summary:
Design: Retrospective study based on clinico-genetic data. Total research duration: 22 months Plan of the study : More than 150 patients referred for ARCA suspicion have been analyzed by NGS (Montpellier platform) since September 2013. The clinical data of these patients will be entered at the computer level into the algorithm to obtain the prediction of the gene involved (under the form of a probability for each of the genes known to ARCA). The investigators will compare this result with that obtained by standard NGS analysis. For patients without molecular diagnosis defined after standard NGS analysis, the investigators will take the 5 most probable genes selected on the basis of the algorithm in order to carry out an in-depth analysis of the variants found and a bioinformatic analysis by semi-automatic detection of CNVs. Main Evaluation Criterion: Concordance of the algorithm with standard NGS analysis for the genetic diagnosis of ARCA. Secondary evaluation criterion:% of patients for whom the prediction based on the algorithm suggested the correct diagnosis (subsequently confirmed after revision in the detail of the genetic data) while the standard genetic analysis was not not informative. Statistical Analysis: The investigators will perform a concordance analysis (Cohen's k) to validate the algorithm in clinical practice. For a given patient, there will be concordance if: i) one of the first 5 genes predicted with the highest probability by the algorithm is compatible with the mutation found after standard NGS or ii) if no gene is predicted by the algorithm (score \<20) and no mutation found by NGS analysis.
Detailed Description:
None
Study Oversight
Has Oversight DMC:
None
Is a FDA Regulated Drug?:
None
Is a FDA Regulated Device?:
None
Is an Unapproved Device?:
None
Is a PPSD?:
None
Is a US Export?:
None
Is an FDA AA801 Violation?: