Carrier Screening - Fragile X Syndrome (FMR1)
Clinical Genetic Test
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offered by
GTR Test Accession: Help GTR000607968.1
CAP
INHERITED DISEASESYNDROMIC DISEASEENDOCRINOLOGY ... View more
Registered in GTR: 2023-08-15
Last annual review date for the lab: 2024-07-05 LinkOut
At a Glance
Diagnosis; Mutation Confirmation; Risk Assessment; ...
Fragile X syndrome; Fragile X-associated tremor/ataxia syndrome; Premature ovarian failure 1
Genes (1): Help
FMR1 (Xq27.3)
Molecular Genetics - Microsatellite instability testing (MSI): Trinucleotide repeat by PCR or Southern Blot
Male patients with intellectual disabilities or symptoms of FXTAS, female …
Not provided
Reproductive decision-making
Ordering Information
Offered by: Help
Specimen Source: Help
  • Buccal swab
  • Peripheral (whole) blood
Who can order: Help
  • Health Care Provider
  • Nurse Practitioner
Test Order Code: Help
CSFXS
Informed consent required: Help
Yes
Pre-test genetic counseling required: Help
Decline to answer
Post-test genetic counseling required: Help
Decline to answer
Recommended fields not provided:
Conditions Help
Total conditions: 3
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: 1
Method Category Help
Test method Help
Instrument *
Microsatellite instability testing (MSI)
Trinucleotide repeat by PCR or Southern Blot
* Instrument: Not provided
Clinical Information
Test purpose: Help
Diagnosis; Mutation Confirmation; Risk Assessment; Screening
Clinical utility: Help
Reproductive decision-making
View citations (1)
  • Gregg AR, Aarabi M, Klugman S, Leach NT, Bashford MT, Goldwaser T, Chen E, Sparks TN, Reddi HV, Rajkovic A, Dungan JS, . Screening for autosomal recessive and X-linked conditions during pregnancy and preconception: a practice resource of the American College of Medical Genetics and Genomics (ACMG). Genet Med. 2021;23(10):1793-1806. doi:10.1038/s41436-021-01203-z. Epub 2021 Jul 20. PMID: 34285390.

Target population: Help
Male patients with intellectual disabilities or symptoms of FXTAS, female patients with symptoms of FXPOI. Patients of any gender that have a known family history of FXS, family history of intellectual disability of unknown cause, or are considering reproduction (carrier screening).
View citations (1)
  • Hiratsuka M, Zhou Y, Lauschke VM. Editorial: Population Pharmacogenomics (PGx): From Variant Identification to Clinical Implementation. Front Genet. 2021;12:736626. doi:10.3389/fgene.2021.736626. Epub 2021 Aug 05. PMID: 34422026.
Recommended fields not provided:
Technical Information
Availability: Help
Tests performed
Entire test performed in-house
Analytical Validity: Help
The GDI FMR1 Fragment Analysis Assay uses a dual PCR system using full length PCR amplification and triplet repeat primed PCR amplification to detect the number of CGG repeats in the FMR1 gene. The assay was validated by Genesys Diagnostics with a sensitiity and speciicity of 100% and 100%.
Proficiency testing (PT):
Is proficiency testing performed for this test? Help
Yes

Method used for proficiency testing: Help
Formal PT program

PT Provider: Help
College of American Pathologists, CAP

CAP Testing Information (legacy) Help
CAP/ACMG Molecular Genetics Series; Fragile X (FMR1 gene); MGL1
Recommended fields not provided:
Regulatory Approval
FDA Review: Help
Not provided
Additional Information

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