GALC Gene Sequencing
- GTR Test IDHelpEach Test is a specific, orderable test from a particular laboratory, and is assigned a unique GTR accession number. The format is GTR00000001.1, with a leading prefix 'GTR' followed by 8 digits, a period, then 1 or more digits representing the version. When a laboratory updates a registered test, a new version number is assigned.: GTR000593848.1
- Last updated: 2023-07-14
- Test version history
- 593848.1, last updated: 2023-07-14
Clinical testHelpIn the U.S., clinical tests must be performed under CLIA certification. When a lab uses the same methods for a test in both clinical and research settings, the test appears as two separate GTR records. for Galactosylceramide beta-galactosidase deficiency
Offered by Institute for Genomic Medicine (IGM) Clinical Laboratory
Overview
Test name
HelpThe name the laboratory assigns the test. Used as the default title of the page specific to the test.GALC Gene Sequencing (GALC Sequencing)
This is a clinical test intended for HelpPurposes or indications for the test. Lab-provided.: Diagnosis, Risk Assessment
Click Indication tab for more information.
Samples can be accepted 7 days a week (Monday - Sunday). All samples must be labeled with minimum of two patient identifying information (e.g. Patient Name and Date of Birth). Please submit all samples with a completed test requisition form.
Order URL HelpLink to the laboratory webpage with information about how to order this test. Please note that clicking on this link will open a new tab in your internet browser.: https://www.nationwidechildrens.org/specialties/laboratory-services
Specimen source
Methodology
HelpThe assay's major method category (biochemical, cytogenetic or molecular genetics); method category (i.e. enzyme assay, chromosome breakage studies, targeted mutation analysis); methodology (i.e. the name of the method used) and instruments used when performing this test.- Molecular Genetics
- TTargeted variant analysis
- Bi-directional Sanger Sequence Analysis
Establish or confirm diagnosis
Reproductive decision-making
Clinical validity
HelpHow consistently and accurately the test detects or predicts the intermediate or final outcomes of interest. Lab-provided.This test sequences the entire coding regions of the GALC gene by Sanger sequencing method. About 55-65% of patients with Krabbe disease have a pathogenic variant detectable by GALC gene sequencing.
Citations
Not provided
Testing strategy
HelpThe lab's suggested sequence of ordering tests based on clinical scenarios. It may include information on: reflex testing including each test component, and scenarios which prompt additional components of testing; whether lab communicates interim results or automatically proceeds to further analyses; and if any components are performed in another laboratory.Concurrent testing available for GALC gene common 30-kb deletion detection for probands suspected to have Krabbe disease. 000 Samples can be accepted 7 days a week (Monday - Sunday). All samples must be labeled with minimum of two patient identifying information (e.g. Patient Name and Date of Birth). Please submit all samples with a completed test requisition form.
- ACMG ACT, 2022American College of Medical Genetics and Genomics, Newborn Screening ACT Sheet, Decreased galactocerebrosidase, elevated psychosine, Krabbe Disease (infantile form), 2022
- ACMG Algorithm, 2022American College of Medical Genetics and Genomics, Algorithm, Krabbe disease: galactocerebrosidase deficiency, 2022
- ACMG ACT, 2022American College of Medical Genetics and Genomics, Newborn Screening ACT Sheet, Decreased galactocerebrosidase, mildly elevated psychosine, Krabbe Disease (late-onset form), 2022
- AAP, 2021Leukodystrophies in Children: Diagnosis, Care, and Treatment, Pediatrics (2021) 148 (3): e2021053126.
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