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Test Code PARDP Inherited Parkinson Disease Gene Panel, Varies


Ordering Guidance


Targeted testing for familial variants (also called site-specific or known variants 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

 

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



Shipping Instructions


Specimen preferred to arrive within 96 hours of collection.



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: 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

Additional Information: To ensure minimum volume and concentration of DNA is met, the preferred volume of blood must be submitted. Testing may be canceled if DNA requirements are inadequate.


Forms

1. New York Clients-Informed consent is required. Document on the request form or electronic order that a copy is on file.

The following documents are available

-Informed Consent for Genetic Testing (T576)

-Informed Consent for Genetic Testing (Spanish) (T826)

2. Molecular Genetics: Neurology Patient Information

3. If not ordering electronically, complete, print, and send a Neurology Specialty Testing Client Test Request (T732) with the specimen.

Useful For

Establishing a molecular diagnosis for patients with Parkinson disease

 

Identifying variants within genes known to be associated with Parkinson disease, allowing for predictive testing of at-risk family members

Method Name

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

Reporting Name

Parkinson Disease 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

Parkinson disease is the second most common neurodegenerative movement disorder, and is characterized by rest tremor, muscle rigidity, bradykinesia, and postural instability. The most common nonmotor features include olfactory dysfunction, cognitive impairment, psychiatric symptoms, and autonomic dysfunction. Onset of disease is commonly around 60 years, but the juvenile form can have onset prior to age 20 years. Early-Parkinson disease has an onset between 20 to 50 years, and late-onset Parkinson disease occurs after age 50 years. The clinical diagnosis is based on parkinsonian motor features, namely bradykinesia plus rigidity and resting tremor. Parkinson disease results from interplay between nongenetic and genetic factors. Risk factors for Parkinson disease include sex, ethnicity, age, and environmental exposures. However, genetic factors are increasingly recognized as causative, with both known monogenic causes and susceptibility genes known.

Reference Values

An interpretive report will be provided.

Day(s) Performed

Varies

Report Available

21 to 35 days

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

81403

81404 x 3

81405 x 4

81406 x 9

81407

81408

81479

81479 (if appropriate for government payers)