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Transketolase deficiency (TKT)
Clinical Genetic Test
Help
offered by
Amsterdam UMC, Location AMC
GTR Test Accession: Help GTR000552117.3
INHERITED DISEASECARDIOVASCULARDYSMORPHOLOGY ... View more
Last updated in GTR: 2021-11-24
View version history
Last annual review date for the lab: 2024-10-14 LinkOut
At a Glance
Test purpose: Help
Diagnosis; Mutation Confirmation
Conditions (1): Help
Transketolase deficiency
Genes (1): Help
TKT (3p21.1)
Methods (2): Help
Biochemical Genetics - Analyte: Metabolite levels; ...
Target population: Help
Not provided
Clinical validity: Help
Not provided
Clinical utility: Help
Not provided
Ordering Information
Offered by: Help
Amsterdam UMC, Location AMC
View lab's website
Specimen Source: Help
  • Amniocytes
  • Cell culture
  • Chorionic villi
  • Cord blood
  • Fibroblasts
  • Frozen tissue
  • Isolated DNA
  • Peripheral (whole) blood
  • White blood cell prep
Who can order: Help
  • Genetic Counselor
  • Health Care Provider
  • Licensed Physician
  • Physician Assistant
Test Order Code: Help
Transketolase deficiency (TKT)
Contact Policy: Help
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: Help
Information and request forms can be found at the website.
Order URL
Test service: Help
Clinical Testing/Confirmation of Mutations Identified Previously
Custom Sequence Analysis
Test additional service: Help
Custom Prenatal Testing
Custom mutation-specific/Carrier testing
Test development: Help
Test developed by laboratory (no manufacturer test name)
Informed consent required: Help
Decline to answer
Pre-test genetic counseling required: Help
Decline to answer
Post-test genetic counseling required: Help
Decline to answer
Recommended fields not provided:
Lab contact for this test, Test strategy
Conditions Help
Total conditions: 1
Condition/Phenotype Identifier
Test Targets
Genes Help
Total genes: 1
Gene Associated Condition Germline or Somatic Allele (Lab-provided) Variant in NCBI
Methodology
Total methods: 2
Method Category Help
Test method Help
Instrument
Analyte
Metabolite levels
GC
Sequence analysis of the entire coding region
Bi-directional Sanger Sequence Analysis
Other
Clinical Information
Test purpose: Help
Diagnosis; Mutation Confirmation
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
Availability: Help
Tests performed
Entire test performed in-house
Analytical Validity: Help
PCR-based sequencing detects 95% of the reported mutations in the TKT 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? Help
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: Help
Not provided
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.