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Friedreichs Ataxia
Clinical Genetic Test
Help
offered by
Center for Genetics at Saint Francis
View lab's test page
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GTR Test Accession: Help GTR000502909.5
CAP
INHERITED DISEASENERVOUS SYSTEM
Last updated in GTR: 2024-07-26
View version history
Last annual review date for the lab: 2024-07-30 LinkOut
At a Glance
Test purpose: Help
Diagnosis; Mutation Confirmation; Pre-symptomatic; ...
Conditions (1): Help
Friedreich ataxia 1
Genes (1): Help
FXN (9q21.11)
Methods (1): Help
Molecular Genetics - Targeted variant analysis: Trinucleotide repeat by PCR or Southern Blot
Target population: Help
Individuals with an ataxia and lower limb weakness that may …
Clinical validity: Help
The GAA trinucleotide repeat is found in 98% of individuals …
Clinical utility: Help
Establish or confirm diagnosis; Predictive risk information for patient and/or family members; Reproductive decision-making
Ordering Information
Offered by: Help
Center for Genetics at Saint Francis
View lab's website
View lab's test page
Test short name: Help
FRDA
Specimen Source: Help
Who can order: Help
  • Genetic Counselor
  • Health Care Provider
  • Licensed Physician
  • Nurse Practitioner
  • Physician Assistant
Lab contact: Help
Tonya Jones, BS, CG(ASCP), MB(ASCP), Administrator
tsjones@saintfrancis.com
918-502-1730
Lynne Whetsell, BS, MB(ASCP), Staff
lhwhetsell@saintfrancis.com
918-502-3808
Contact Policy: Help
Post-test email/phone consultation regarding genetic test results and interpretation is provided to patients/families.
Pre-test email/phone consultation regarding genetic test results and interpretation is provided to patients/families.
How to Order: Help
1. Choose the desired test from the Test Directory.
2. Obtain information on the required specimen for the specific test from the Test Information page.
3. Fill out the necessary test requisition form and any other required forms from the Forms page.
4. Provide the required Billing information or make …
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Order URL
Test service: Help
Clinical Testing/Confirmation of Mutations Identified Previously
Test development: Help
Test developed by laboratory but exempt from FDA oversight (eg. NYS CLEP approved, offered within a hospital or clinic)
Informed consent required: Help
No
Pre-test genetic counseling required: Help
No
Post-test genetic counseling required: Help
No
Recommended fields not provided:
Test Order Code, Test strategy
Conditions Help
Total conditions: 1
Condition/Phenotype Identifier
Test Targets
Genes Help
Total genes: 1
Gene Associated Condition Germline or Somatic Allele (Lab-provided) Variant in NCBI
Methodology
Total methods: 1
Method Category Help
Test method Help
Instrument
Targeted variant analysis
Trinucleotide repeat by PCR or Southern Blot
Applied Biosystems 3130 Capillary Sequencing System
Clinical Information
Test purpose: Help
Diagnosis; Mutation Confirmation; Pre-symptomatic; Risk Assessment
Clinical validity: Help
The GAA trinucleotide repeat is found in 98% of individuals with FRDA.
View citations (1)
Clinical utility: Help
Establish or confirm diagnosis
View citations (1)

Predictive risk information for patient and/or family members
View citations (1)

Reproductive decision-making
View citations (1)

Target population: Help
Individuals with an ataxia and lower limb weakness that may be exhibiting symptoms of Friedreich's Ataxia; the GAA trinucleotide repeat is found in 98% of individuals with FRDA. Individuals with a family history of FRDA who want to determine their true risk or prenatal risk.
Recommended fields not provided:
What is the protocol for interpreting a variation as a VUS?, Are family members with defined clinical status recruited to assess significance of VUS without charge?, Will the lab re-contact the ordering physician if variant interpretation changes?, Is research allowed on the sample after clinical testing is complete?, Sample negative report, Sample positive report
Technical Information
Test Procedure: Help
Confirmation is performed on a new blood specimen (if submitted) and a separate DNA preparation using the same methodology.
Test Confirmation: Help
Confirmation is performed on a new blood specimen (if submitted) and a separate DNA preparation using the same methodology.
Availability: Help
Tests performed
Entire test performed in-house
Analytical Validity: Help
Analytical sensitivity, specificity and accuracy greater than 99%; determined by in-house validations.
View citations (1)
Proficiency testing (PT):
Is proficiency testing performed for this test? Help
Yes

Method used for proficiency testing: Help
Formal PT program

PT Provider: Help
American College of Medical Genetics / College of American Pathologists, ACMG/CAP
Recommended fields not provided:
Assay limitations, Description of internal test validation method, Description of PT method, Major CAP category, CAP category, CAP test list
Regulatory Approval
FDA Review: Help
Category: FDA exercises enforcement discretion
Additional Information

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