GTR Test Accession:
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GTR000078631.3
Last updated in GTR: 2015-11-26
View version history
GTR000078631.3, last updated: 2015-11-26
GTR000078631.2, last updated: 2014-11-26
GTR000078631.1, last updated: 2013-11-26
Last annual review date for the lab: 2021-01-29
Past due
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At a Glance
Test purpose:
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Diagnosis;
Mutation Confirmation;
Pre-symptomatic; ...
Conditions (1):
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Steinert myotonic dystrophy syndrome
Genes (1):
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DMPK (19q13.32)
Methods (1):
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Molecular Genetics - Targeted variant analysis: Trinucleotide repeat by PCR or Southern Blot
Target population: Help
Myotonic Dystrophy patients
Clinical validity:
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Not provided
Clinical utility:
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Establish or confirm diagnosis
Ordering Information
Offered by:
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Test short name:
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DM1
Specimen Source:
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- Isolated DNA
- Peripheral (whole) blood
- View specimen requirements
Who can order: Help
- Genetic Counselor
- Health Care Provider
- Licensed Physician
Test Order Code:
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20-9
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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Completion of the laboratory referral letter by the referring physician/scientist. Provision of a signed informed consent form. Both forms are available on the laboratory website.
Order URL
Order URL
Test service:
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Clinical Testing/Confirmation of Mutations Identified Previously
Test additional service:
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Custom Prenatal Testing
Test development:
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Test developed by laboratory (no manufacturer test name)
Informed consent required:
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Yes
Pre-test genetic counseling required:
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Yes
Post-test genetic counseling required:
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Yes
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: 1
Method Category
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Test method
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Instrument
Targeted variant analysis
Trinucleotide repeat by PCR or Southern Blot
Applied Biosystems 3130xl genetic analyser
Clinical Information
Test purpose:
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Diagnosis;
Mutation Confirmation;
Pre-symptomatic;
Risk Assessment
Clinical utility:
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Target population:
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Myotonic Dystrophy patients
View citations (1)
- Molecular basis of myotonic dystrophy: expansion of a trinucleotide (CTG) repeat at the 3' end of a transcript encoding a protein kinase family member. Brook JD, et al. Cell. 1992;68(4):799-808. doi:10.1016/0092-8674(92)90154-5. PMID: 1310900.
Recommended fields not provided:
Clinical validity,
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:
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[1] FAM labelled PCR and Applied Biosystems 3031xl automated fragment analysis of the CAG repeat expansion in the 3' untranslated region of the dystrophia myotonica protein kinase gene (DMPK) on chromosome 19. [2] TP-PCR analysis of the above trinucleotide repeat is performed using the Applied Biosystems 3130xl Genetic Analyser and …
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View citations (1)
- Molecular basis of myotonic dystrophy: expansion of a trinucleotide (CTG) repeat at the 3' end of a transcript encoding a protein kinase family member. Brook JD, et al. Cell. 1992;68(4):799-808. doi:10.1016/0092-8674(92)90154-5. PMID: 1310900.
Test Confirmation:
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different method or new sample
Availability:
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Tests performed
Entire test performed in-house
Entire test performed in-house
Analytical Validity:
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99% precise
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
European Molecular Genetics Quality Network, EMQN
Yes
Method used for proficiency testing: Help
Formal PT program
PT Provider: Help
European Molecular Genetics Quality Network, EMQN
Recommended fields not provided:
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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Category:
Not Applicable
Additional Information
Clinical resources:
Molecular resources:
Practice guidelines:
Consumer resources:
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Patients and consumers
with specific questions about a genetic test should contact a health care provider or a genetics professional.