Spinocerebellar Ataxia Panel (SCA1,2,3,6, and 7)
GTR Test Accession: Help GTR000529286.3
Last updated in GTR: 2018-09-24
Last annual review date for the lab: 2021-10-14 Past due LinkOut
At a Glance
Diagnosis; Pre-symptomatic
Hereditary ataxia; Spinocerebellar ataxia 7; Spinocerebellar ataxia type 1; ...
Genes (5): Help
ATXN1 (6p22.3), ATXN2 (12q24.12), ATXN3 (14q32.12), ATXN7 (3p14.1), CACNA1A (19p13.13)
Molecular Genetics - Targeted variant analysis: Trinucleotide repeat by PCR or Southern Blot
Not provided
Clinical Sensitivity is 99%. Over 95% of ataxia conditions (by …
Establish or confirm diagnosis
Ordering Information
Offered by: Help
Center for Genetics at Saint Francis
View lab's website
View lab's test page
Test short name: Help
SCA Panel
Specimen Source: Help
Who can order: Help
  • Health Care Provider
Test Order Code: Help
CPT codes: Help
**AMA CPT codes notice
Lab contact: Help
Lynne Whetsell, BS, MB(ASCP), Administrator
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
Obtain specific specimen information from website. Submit a test requisition form with billing information when submitting a specimen for testing.
Order URL
Test service: Help
Clinical Testing/Confirmation of Mutations Identified Previously
Test additional service: Help
Custom mutation-specific/Carrier testing
Test development: Help
Test developed by laboratory (no manufacturer test name)
Informed consent required: Help
Based on applicable state law
Pre-test genetic counseling required: Help
Post-test genetic counseling required: Help
Recommended fields not provided:
Conditions Help
Total conditions: 5
Condition/Phenotype Identifier
Test Targets
Genes Help
Total genes: 5
Gene Associated Condition Germline or Somatic Allele (Lab-provided) Variant in NCBI
Total methods: 1
Method Category Help
Test method Help
Targeted variant analysis
Trinucleotide repeat by PCR or Southern Blot
Applied Biosystems 3130 Capillary Sequencing Instrument
Clinical Information
Test purpose: Help
Diagnosis; Pre-symptomatic
Clinical validity: Help
Clinical Sensitivity is 99%. Over 95% of ataxia conditions (by incidence) are encompassed by this panel.
Clinical utility: Help
Establish or confirm diagnosis
View citations (2)
  • Perlman S. Hereditary Ataxia Overview. 1998 Oct 28 [updated 2023 Nov 16]. In: Adam MP, Feldman J, Mirzaa GM, Pagon RA, Wallace SE, Bean LJH, Gripp KW, Amemiya A, editors. GeneReviews® [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2024. PMID: 20301317.
  • https://www.ncbi.nlm.nih.gov/books/NBK1138

Variant Interpretation:
What is the protocol for interpreting a variation as a VUS? Help

Are family members with defined clinical status recruited to assess significance of VUS without charge? Help
No. N/A

Will the lab re-contact the ordering physician if variant interpretation changes? Help
No. N/A
Recommended fields not provided:
Technical Information
Test Procedure: Help
Extract new sample and duplicate method
Test Confirmation: Help
Extract new sample and duplicate method
Availability: Help
Tests performed
Entire test performed in-house
Analytical Validity: Help
99 percent
Assay limitations: Help
This testing examines the trinucleotide repeat regions, exclusively. However, no other mechanism has been described for these conditions and the testing is considered diagnostic. Rare diagnostic errors can occur due to primer or probe site mutations or rare polymorphisms.
Proficiency testing (PT):
Is proficiency testing performed for this test? Help

Method used for proficiency testing: Help
Formal PT program

PT Provider: Help
American College of Medical Genetics / College of American Pathologists, ACMG/CAP
Software used to interpret novel variations Help

Laboratory's policy on reporting novel variations Help
Recommended fields not provided:
Regulatory Approval
FDA Review: Help
Category: FDA exercises enforcement discretion
Additional Information

IMPORTANT NOTE: NIH does not independently verify information submitted to GTR; it relies on submitters to provide information that is accurate and not misleading. NIH makes no endorsements of tests or laboratories listed in GTR. GTR is not a substitute for medical advice. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.