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HelpTest Code ATAXP Inherited Ataxia 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 / 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.
Secondary ID
617506Useful For
Establishing a molecular diagnosis for patients with ataxia
Identifying variants within genes known to be associated with ataxia, allowing for predictive testing of at-risk family members
Genetics Test Information
This test utilizes next-generation sequencing to detect single nucleotide and copy number variants in 198 genes associated with ataxia: AAAS, ABCB7, ABHD12, ACO2, ADPRHL2 (ADPRS), AFG3L2, ALDH5A1, ALG6, ALS2, ANO10, APOPT1 (COA8), APTX, ARSA, ATCAY, ATM, ATP1A3, ATP8A2, AUH, C12orf65 (MTRFR), C19orf12, CA8, CACNA1A, CACNA1G, CAMTA1, CAPN1, CC2D2A, CCDC88C, CHCHD10, CLCN2, CLN5, CLPP, COQ2, COQ8A, COX20, CP, CTBP1, CWF19L1, CYP27A1, DARS2, DLD, DNAJC19, DNAJC3, DNMT1, EBF3, EIF2B1, EIF2B2, EIF2B3, EIF2B4, EIF2B5, ELOVL4, ELOVL5, EPM2A, FA2H, FBXL4, FGF14, FLVCR1, FMR1, FOLR1, FXN, GAMT, GBA2, GCDH, GDAP2, GFAP, GJC2, GOSR2, GRID2, GRM1, HEPACAM, HEXA, HIBCH, ITM2B, ITPR1, KCNA1, KCNA2, KCNC3, KCND3, KCNJ10, KCTD7, KIF1C, KIF5A, L2HGDH, LAMA1, LYRM7, MARS2, MECR, MLC1, MPV17, MRE11, MSTO1, MTFMT, MTO1, MTTP, NDUFAF2, NDUFAF6, NDUFS1, NDUFS7, NDUFV1, NEU1, NKX6-2, NOTCH3, NUBPL, OPA1, OPA3, OTC, PANK2, PCNA, PDHA1, PDSS2, PDYN, PEX10, PEX7, PHYH, PLA2G6, PLD3, PLP1, PMM2, PMPCA, PNKP, PNPLA6, POLG, POLR1C, POLR3A, POLR3B, PRKCG, PRNP, PRRT2, PSAP, PTRH2, PUM1, RARS1, RNASEH1, RNF170, RNF216, RPGRIP1L, RRM2B, RUBCN, SACS, SAMD9L, SCN2A, SCN8A, SCYL1, SDHA, SDHAF1, SETX, SIL1, SLC16A2, SLC17A5, SLC19A3, SLC1A3, SLC25A3, SLC25A46, SLC2A1, SLC44A1, SLC52A2, SLC52A3, SLC6A19, SLC9A1, SLC9A6, SNX14, SPAST, SPG11, SPG7, SPR, SPTBN2, SQSTM1, SRD5A3, STUB1, SUMF1, SURF1, SYNE1, TACO1, TBP, TDP1, TDP2, TGM6, THG1L, TIMM8A, TMEM216, TMEM240, TMEM67, TMEM70, TPK1, TPP1, TSFM, TTBK2, TTC19, TTPA, TUBB4A, TWNK, UBA5, VAMP1, VARS2, VLDLR, VPS13D, WDR73, WDR81, and WFS1. For more information see Targeted Genes and Methodology Details for Inherited Ataxia Gene Panel and Method Description.
Identification of a disease-causing variant may assist with diagnosis, prognosis, clinical management, recurrence risk assessment, familial screening, and genetic counseling for ataxia.
Special Instructions
Method Name
Sequence Capture and Targeted Next-Generation Sequencing followed by Polymerase Chain Reaction (PCR) and Sanger Sequencing
Reporting Name
Ataxia Gene PanelSpecimen Type
VariesSpecimen 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
Ataxia involves impaired coordination of voluntary muscle movement and can present in isolation or as part of a more complex disease. Additionally, ataxia may present as an abnormality in gait, changes in speech, and abnormal eye movements. The age of onset of symptoms can vary dramatically both within and across different ataxias. While there are acquired causes of ataxia, many have an underlying genetic cause. The hereditary ataxias can be subdivided by inheritance, including autosomal dominant, autosomal recessive, X-linked, and mitochondrial.
The hereditary ataxias are a heterogeneous group of disorders in which a diagnosis can be made based on a neurologic exam, family history, and molecular analysis. Given the clinical overlap of hereditary ataxia disorders, multigene panels can be an efficient and cost-effective way to establish a molecular diagnosis for individuals with ataxia.
Reference Values
An interpretive report will be provided.
Interpretation
All detected variants are evaluated according to American College of Medical Genetics and Genomics recommendations.(1) 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
21 to 35 daysSpecimen Retention Time
Whole blood: 2 weeks (if available); Extracted DNA: 3 monthsPerforming 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
81443
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| ATAXP | Ataxia Gene Panel | 51966-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 617507 | Test Description | 62364-5 |
| 617508 | Specimen | 31208-2 |
| 617509 | Source | 31208-2 |
| 617510 | Result Summary | 50397-9 |
| 617511 | Result | 82939-0 |
| 617512 | Interpretation | 69047-9 |
| 618175 | Additional Results | 82939-0 |
| 617513 | Resources | 99622-3 |
| 617514 | Additional Information | 48767-8 |
| 617515 | Method | 85069-3 |
| 617516 | Genes Analyzed | 48018-6 |
| 617517 | Disclaimer | 62364-5 |
| 617518 | Released By | 18771-6 |