GTR Test Accession:
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GTR000592963.3
CAP
Last updated in GTR: 2023-06-29
View version history
GTR000592963.3, last updated: 2023-06-29
GTR000592963.2, last updated: 2023-04-07
GTR000592963.1, last updated: 2021-04-29
Last annual review date for the lab: 2024-04-04
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At a Glance
Test purpose:
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Diagnosis
Conditions (22):
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Macrothrombocytopenia, isolated, 1, autosomal dominant;
Congenital amegakaryocytic thrombocytopenia;
Familial hemophagocytic lymphohistiocytosis 5
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Genes (26):
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Methods (1):
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Molecular Genetics - Sequence analysis of the entire coding region: Next-Generation (NGS)/Massively parallel sequencing (MPS)
Target population: Help
Not provided
Clinical validity:
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Identification of causal mutations have enhanced the diagnosis of inherited …
Clinical utility:
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Establish or confirm diagnosis
Ordering Information
Offered by:
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Specimen Source:
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- Buccal swab
- Peripheral (whole) blood
- View specimen requirements
Who can order: Help
- Health Care Provider
- Licensed Physician
Test Order Code:
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P1225
How to Order:
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Please visit lab website for details. Inquire about functional confirmation testing.
Order URL
Order URL
Test service:
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Custom Sequence Analysis
Result interpretation
Result interpretation
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,
Contact policy,
Test strategy
Conditions
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Total conditions: 22
Condition/Phenotype | Identifier |
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Test Targets
Genes
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Total genes: 26
Gene | Associated Condition | Germline or Somatic | Allele (Lab-provided) | Variant in NCBI |
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Methodology
Total methods: 1
Method Category
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Test method
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Instrument *
Sequence analysis of the entire coding region
Next-Generation (NGS)/Massively parallel sequencing (MPS)
* Instrument: Not provided
Clinical Information
Test purpose:
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Diagnosis
Clinical validity:
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Identification of causal mutations have enhanced the diagnosis of inherited thrombocytopenia, however, the clinical sensitivity is still thought to be around 50 %. We sequenced one positive control sample from a patient diagnosed with thrombocytopenia. In this case, we identified a pathogenic variant along with other SNVs, suggesting the clinical …
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Clinical utility:
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Establish or confirm diagnosis
View citations (1)
- Hereditary thrombocytopenias: a growing list of disorders. Noris P, et al. Hematology Am Soc Hematol Educ Program. 2017;2017(1):385-399. doi:10.1182/asheducation-2017.1.385. PMID: 29222283.
Recommended fields not provided:
Target population,
What is the protocol for interpreting a variation as a VUS?,
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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Inherited thrombocytopenia is a group of heterogenous blood disorders characterized by low platelet counts; typically less than 150,000/uL. Symptoms include excessive bruising (purpura), petechiae, prolonged bleeding from cuts, spontaneous nose bleeds, and heavy menstrual flows in women. Inherited thrombocytopenia may follow either autosomal dominant, autosomal recessive, or X-linked inheritance. Severe …
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Availability:
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Tests performed
Entire test performed in-house
Entire test performed in-house
Analytical Validity:
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The analytic specificity and sensitivity of the NGS panel are greater than 99%. 2 rare and 192 common variants in the genes tested were found in the sample NA12878 with zero false negatives and zero false positives.
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
American College of Medical Genetics / College of American Pathologists, ACMG/CAP
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:
Test Confirmation,
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:
Molecular resources:
Consumer resources:
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with specific questions about a genetic test should contact a health care provider or a genetics professional.