Costello Syndrome (HRAS gene)
- 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.: GTR000568242.4
- Last updated: 2022-07-28
- Test version history
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 Costello syndrome
Offered by Molecular Genetics and Cytogenetics, Clinical Laboratory Service
Overview
Test name
HelpThe name the laboratory assigns the test. Used as the default title of the page specific to the test.Costello Syndrome (HRAS gene) (Costello syndrome)
This is a clinical test intended for HelpPurposes or indications for the test. Lab-provided.: Diagnosis, Mutation Confirmation
Click Indication tab for more information.
Not provided
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
- ESequence analysis of select exons
- Bi-directional Sanger Sequence Analysis
Establish or confirm diagnosis
- HRAS mutation analysis in Costello syndrome: genotype and phenotype correlation. - PubMed ID: 16329078
Clinical validity
HelpHow consistently and accurately the test detects or predicts the intermediate or final outcomes of interest. Lab-provided.More than 80% of patients with Costello syndrome share the pathogenic variant p.Gly12Ser in HRAS gene.
- Male-to-male transmission of Costello syndrome: G12S HRAS germline mutation inherited from a father with somatic mosaicism. - PubMed ID: 19206176
Test services
HelpLaboratory's order or catalog code for the test (used in the order requisition form).- Clinical Testing/Confirmation of Mutations Identified Previously
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