GTR Test Accession:
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GTR000319848.1
Registered in GTR:
2014-10-08
View version history
GTR000319848.1,
registered in GTR:
2014-10-08
Last annual review date for the lab: 2024-11-26
LinkOut
At a Glance
Test purpose:
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Diagnosis;
Drug Response
Conditions (1):
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Gastrointestinal stromal tumor
Genes (2):
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KIT (4q12);
PDGFRA (4q12)
Methods (2):
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Molecular Genetics - Sequence analysis of select exons: Bi-directional Sanger Sequence Analysis; ...
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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Test short name:
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GIST
Specimen Source:
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- Isolated DNA
- Paraffin block
- Peripheral (whole) blood
Who can order: Help
- Genetic Counselor
- Licensed Physician
Lab contact:
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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.
Informed consent required:
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Based on applicable state law
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:
Test Order Code,
How to Order,
Test strategy,
Test development
Conditions
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Total conditions: 1
Condition/Phenotype | Identifier |
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Test Targets
Genes
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Total genes: 2
Gene | Associated Condition | Germline or Somatic | Allele (Lab-provided) | Variant in NCBI |
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Methodology
Total methods: 2
Method Category
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Test method
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Instrument
Sequence analysis of select exons
Bi-directional Sanger Sequence Analysis
Applied Biosystems 3130XL
Sequence analysis of the entire coding region
Bi-directional Sanger Sequence Analysis
Applied Biosystems 3130XL
Clinical Information
Test purpose:
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Diagnosis;
Drug Response
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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Two-tiered testing: tier 1 is sequencing of selected exons; if negative, tier 2 is sequencing of the remaining exons.
KIT: exons 9, 11, 13, 17
PDGFRA: exons 12, 14, 18
KIT: exons 9, 11, 13, 17
PDGFRA: exons 12, 14, 18
Availability:
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Tests performed
Entire test performed in-house
Entire test performed in-house
Analytical Validity:
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Analytical sensitivity and specificity >95%.
Assay limitations:
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Detection limit of somatic mutations in tumor tissue: 10-15 %
Proficiency testing (PT):
Is proficiency testing performed for this test?
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Yes
Method used for proficiency testing: Help
Formal PT program
PT Provider: Help
Qualitätssicherungs-Initiative Pathologie (QuiP)
Yes
Method used for proficiency testing: Help
Formal PT program
PT Provider: Help
Qualitätssicherungs-Initiative Pathologie (QuiP)
Recommended fields not provided:
Test Confirmation,
Citations to support assay limitations,
Description of internal test validation method,
Citations for Analytical validity,
Description of PT method,
Major CAP category, CAP category, CAP test list
Regulatory Approval
FDA Review:
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Not provided
Additional Information
Reviews:
Clinical resources:
Practice guidelines:
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Patients and consumers
with specific questions about a genetic test should contact a health care provider or a genetics professional.