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Test Code EDSGG Ehlers-Danlos Syndrome Gene Panel, Varies


Ordering Guidance


Customization of this panel and single gene analysis for any gene present on this panel are available. For more information see CGPH/ Custom Gene Panel, Hereditary, Next-Generation Sequencing, Varies.

 

Targeted testing for familial variants (also called site-specific or known mutations testing) is available for the genes on this panel. See FMTT / Familial Variant, Targeted Testing, Varies. To obtain more information about this testing option, call 800-533-1710.



Shipping Instructions


Specimen preferred to arrive within 96 hours of collection.



Necessary Information


Prior Authorization is available, but not required, for this test. If proceeding with the prior authorization process, submit the required form with the specimen.



Specimen Required


Patient Preparation: A previous bone marrow transplant from an allogenic donor will interfere with testing. For instructions for testing patients who have received a bone marrow transplant, call 800-533-1710

Specimen Type: Whole blood

Container/Tube:

Preferred: Lavender top (EDTA) or yellow top (ACD)

Acceptable: Any anticoagulant

Specimen Volume: 3 mL

Collection Instructions:

1. Invert several times to mix blood.

2. Send whole blood specimen in original tube. Do not aliquot.

Specimen Stability Information: Ambient (preferred)/Refrigerated

 

Specimen Type: Saliva

Patient Preparation: Patient should not eat, drink, smoke, or chew gum 30 minutes prior to collection.

Supplies: Saliva Swab Collection Kit (T786)

Specimen Volume: 1 Swab

Collection Instructions: Collect and send specimen per kit instructions.

Specimen Stability Information: Ambient 30 days

Additional Information: Due to lower concentration of DNA yielded from saliva, it is possible that additional specimen may be required to complete testing.


Useful For

Providing a genetic evaluation for patients with a personal or family history suggestive of Ehlers-Danlos syndrome and related conditions

 

Establishing a diagnosis for Ehlers-Danlos syndrome, X-linked occipital horn syndrome, X-linked periventricular nodular heterotopia, and brittle cornea syndrome

Genetics Test Information

This test utilizes next-generation sequencing to detect single nucleotide and copy number variants in 22 genes associated with Ehlers-Danlos syndrome and related conditions: ADAMTS2, AEBP1, ATP7A, B3GALT6, B3GAT3, B4GALT7, CHST14, COL12A1, COL1A1, COL1A2, COL3A1, COL5A1, COL5A2, DSE, FKBP14, FLNA, PLOD1, PRDM5, SLC39A13, SPARC, TNXB, and ZNF469. See Targeted Genes and Methodology Details for Ehlers-Danlos Syndrome Gene Panel and Method Description for additional details.

 

Identification of a disease-causing variant may assist with diagnosis, prognosis, clinical management, familial screening, and genetic counseling for various forms of Ehlers-Danlos syndrome and related conditions.

 

Prior Authorization is available for this assay.

Method Name

Sequence Capture and Targeted Next-Generation Sequencing (NGS) followed by Polymerase Chain Reaction (PCR) and Sanger Sequencing

Reporting Name

Ehlers-Danlos Syndrome Gene Panel

Specimen Type

Varies

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Varies

Reject Due To

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Clinical Information

The Ehlers-Danlos syndromes (EDS) are a clinically and genetically diverse group of heritable connective tissue disorders characterized by joint hypermobility, skin hyperextensibility, and tissue fragility. EDS has an overall estimated prevalence between 1:5000 and 1:25,000.

 

The classification system proposed by the International EDS Consortium identifies 13 subtypes of EDS.(1) A helpful chart delineating the various forms of EDS and their corresponding genes is provided by the Ehlers-Danlos Society.(2)

 

This panel includes genes associated with autosomal dominant and autosomal recessive forms of EDS, including classical, classical-like EDS, vascular, dermatosparaxis, spondylodysplastic, musculocontractural, cardiac-valvular EDS, myopathic, and kyphoscoliotic forms. Of note, hypermobile EDS is inherited in an autosomal dominant inheritance pattern, however, the molecular basis of this condition is unknown, and a diagnosis is based on clinical criteria.

 

Other conditions with phenotypic overlap with EDS covered by this panel include X-linked occipital horn syndrome (ATP7A gene), X-linked periventricular nodular heterotopia (FLNA gene), and brittle cornea syndrome (PRDM5 and ZNF469 genes).

Reference Values

An interpretive report will be provided.

Interpretation

All detected variants are evaluated according to American College of Medical Genetics and Genomics recommendations.(3) Variants are classified based on known, predicted, or possible pathogenicity and reported with interpretive comments detailing their potential or known significance.

Day(s) Performed

Varies

Report Available

28 to 42 days

Specimen Retention Time

Whole blood: 2 weeks (if available); Extracted DNA: 3 months; Saliva: 1 month

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

81408 x2

81479

81479 (if appropriate for government payers)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
EDSGG Ehlers-Danlos Syndrome Gene Panel 93200-4

 

Result ID Test Result Name Result LOINC Value
617254 Test Description 62364-5
617255 Specimen 31208-2
617256 Source 31208-2
617257 Result Summary 50397-9
617258 Result 82939-0
617259 Interpretation 69047-9
617260 Additional Results 82939-0
617261 Resources 99622-3
617262 Additional Information 48767-8
617263 Method 85069-3
617264 Genes Analyzed 48018-6
617265 Disclaimer 62364-5
617266 Released By 18771-6