Economic and Medical Evaluation of the Whole Mitochondrial DNA Screening by Surveyor and Mitochips Techniques

Completed

• Conditions: Mitochondrial Disease

• Registration Number: NCT00829270
• Lead Sponsor: Centre Hospitalier Universitaire de Nice

Brief Summary

Mitochondrial diseases are the most frequent metabolic diseases (2.5 persons among 10 000) and are clinically heterogeneous making diagnosis particularly challenging for clinicians.

Molecular analysis of mitochondrial DNA (mtDNA) is a critical step in diagnosis and genetic counselling of respiratory chain defects. DNA sequencing remains the gold standard but it is time-consuming and fails to detect mutations that may be present at a low heteroplasmic level (20% or below); therefore the diagnosis is yet based on the detection of a few number of pathogenic mutations.

The present study aims to evaluate the benefit and the cost of a diagnosis strategy based on the combined use of 2 techniques named "Surveyor Nuclease" and "Mitochip". Surveyor nuclease is a mismatch-specific DNA endonuclease that will be used for screening the entire mtDNA in order to identify heteroplasmic mutations. In absence of any identified mutation, another technique based on the use an oligonucleotide sequencing microarray (MitoChip) will be performed for the identification of homoplasmic mutations. Mitochip is an array-based sequencing platform for rapid and high-throughput analysis of mitochondrial DNA.

The economical study will compare the cost of these techniques to the standard diagnosis method in term of direct and indirect costs

Detailed Description

Not available

Study Timeline

• Status Verified: 2009-01
• Study First Submitted: 2009-01-26
• Study First Submitted QC: 2009-01-26
• Study First Posted: 2009-01-27
• Study Start: 2009-03
• Primary Completion: 2012-07
• Study Completion: 2012-07
• Last Update Submitted: 2012-12-17
• Last Update Posted: 2012-12-18

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 550

Inclusion Criteria

• patients without deletion of mitochondrial disease and/or 3243, 8344 and 8993 mutation
• patient with health insurance

Exclusion Criteria

• patients with deletion of mitochondrial disease and/or 3243, 8344 and 8993 mutation
• absence of patient consent

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Evaluation of the benefit and the cost of a mitochondrial disease diagnosis strategy based on the combined use of 2 techniques named "Surveyor Nuclease" and "Mitochip"	2 years

Secondary Outcome Measures

Name	Time	Method
Evaluation of the benefit of the studiad strategy in comparison with standard diagnosis method in term of indirect costs	2 years

Trial Locations

Locations (1)

CHU de Nice - Medical genetics laboratory; 🇫🇷 Nice, France