GTR Test Accession:
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GTR000319033.3
Last updated in GTR: 2021-11-24
View version history
GTR000319033.3, last updated: 2021-11-24
GTR000319033.2, last updated: 2021-10-14
GTR000319033.1, last updated: 2013-12-09
Last annual review date for the lab: 2023-10-12
LinkOut
At a Glance
Test purpose:
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Diagnosis;
Mutation Confirmation;
Screening
Conditions (1):
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Spongy degeneration of central nervous system
Genes (1):
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ASPA (17p13.2)
Methods (4):
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Biochemical Genetics - Analyte: Metabolite levels; ...
Target population: Help
Not provided
Clinical validity:
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Not provided
Clinical utility:
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Not provided
Ordering Information
Offered by:
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Specimen Source:
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- Amniocytes
- Cell culture
- Chorionic villi
- Cord blood
- Fibroblasts
- Frozen tissue
- Isolated DNA
- Peripheral (whole) blood
- White blood cell prep
- View specimen requirements
Who can order: Help
- Genetic Counselor
- Health Care Provider
- Licensed Physician
- Physician Assistant
Test Order Code:
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Canavan disease/ Asparto acylase deficiency (ASPA)
Contact Policy:
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Laboratory can only accept contact from health care providers. Patients/families are encouraged to discuss genetic testing options with their health care provider.
How to Order:
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Test service:
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Clinical Testing/Confirmation of Mutations Identified Previously
Custom Deletion/Duplication Testing
Custom Sequence Analysis
Custom Deletion/Duplication Testing
Custom Sequence Analysis
Test additional service:
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Custom Prenatal Testing
Custom mutation-specific/Carrier testing
Custom mutation-specific/Carrier testing
Test development:
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Test developed by laboratory but exempt from FDA oversight (eg. NYS CLEP approved, offered within a hospital or clinic)
Informed consent required:
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Decline to answer
Pre-test genetic counseling required:
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Decline to answer
Post-test genetic counseling required:
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Decline to answer
Recommended fields not provided:
Lab contact for this test,
Test strategy
Conditions
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Total conditions: 1
Condition/Phenotype | Identifier |
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Test Targets
Genes
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Total genes: 1
Gene | Associated Condition | Germline or Somatic | Allele (Lab-provided) | Variant in NCBI |
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Methodology
Total methods: 4
Method Category
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Test method
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Instrument
Analyte
Metabolite levels
Deletion/duplication analysis
Multiplex Ligation-dependent Probe Amplification (MLPA)
Applied biosystems 3130 capillary sequencing instrument
Sequence analysis of the entire coding region
Bi-directional Sanger Sequence Analysis
Applied biosystems 3130 capillary sequencing instrument
Targeted variant analysis
Bi-directional Sanger Sequence Analysis
Applied biosystems 3130 capillary sequencing instrument
Clinical Information
Test purpose:
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Diagnosis;
Mutation Confirmation;
Screening
Recommended fields not provided:
Clinical validity,
Clinical utility,
Target population,
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 Comments:
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Genomic and cDNA sequencing
Target Population: Ashkenazi Jewish Population
Target Population: Ashkenazi Jewish Population
Availability:
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Tests performed
Entire test performed in-house
Entire test performed in-house
Analytical Validity:
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PCR-based sequencing detects 99% of the reported mutations in the ASPA gene. The sensitivity of DNA sequencing is over 99% for the detection of nucleotide base changes, small deletions and insertions in the regions analyzed.
Proficiency testing (PT):
Is proficiency testing performed for this test?
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No
No
Recommended fields not provided:
Test Confirmation,
Assay limitations,
Description of internal test validation method,
Citations for Analytical validity,
PT Provider,
Description of PT method,
Major CAP category, CAP category, CAP test list
Regulatory Approval
FDA Review:
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Not provided
Additional Information
Clinical resources:
Molecular resources:
Practice guidelines:
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.