Mitochondrial Disorders (mtDNA) Sequencing and Deletion Analysis by NGS
Ordering Recommendation
Assess for sequence variants in the mitochondrial genome (mtDNA) causing mitochondrial disorders, especially for individuals with clinical symptoms characteristic of a specific disorder, such as leber hereditary optic neuropathy (LHON), mitochondrial encephalomyopathy with lactic acidosis and stroke-like episodes (MELAS), myoclonic epilepsy with ragged-red fibers (MERRF), and neurogenic weakness with ataxia and retinitis pigmentosa (NARP).
New York DOH Approval Status
Specimen Required
Lavender (K2 or K3EDTA). Also acceptable: Buccal swabs.
Transport 5 mL whole blood (Min: 2 mL) or 2 buccal swabs. (Min: 2 swabs)
Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered.
Refrigerated.
Ambient: 24 hours; Refrigerated: 1 week; Frozen: Unacceptable
Methodology
Massively Parallel Sequencing
Performed
Varies
Reported
21-28 days
Reference Interval
By report
Interpretive Data
Performed by non-ARUP Laboratory
Note
Hotline History
Hotline History
CPT Codes
81460; 81465
Components
Component Test Code* | Component Chart Name | LOINC |
---|---|---|
3001966 | EER Mito Disorders, mtDNA, Seq/Del | 11526-1 |
3001967 | Mito Disorders, mtDNA, Seq/Del | 40995-3 |
Aliases
- Aminoglycoside-Induced Deafness
- cblJ Type
- Chronic Intestinal Pseudoobstruction with Myopathy and Ophthalmoplegia (CIPO)
- Chronic Progressive External Ophthalmoplegia (CPEO)
- Coenzyme Q10 Deficiency
- Complex I Deficiency
- Complex III Deficiency
- Complex IV(Cytochrome C Oxidase) Deficiency
- Complex V (ATP Synthesis) Deficiency
- Diabetes and Hearing Loss
- Kearns-Sayre Syndrome (KSS)
- Lactic acidosis
- Lebers Hereditary Optic Neuropathy (LHON)
- Maternally Inherited Deafness
- Maternally Inherited Diabetes Mellitus (MIDM)
- Maternally Inherited Diabetes/Deafness (MIDD)
- Methylmalonic Aciduria and Homocystinuria
- Mitochondrial Encephalomyopathy (Lactic Acidosis and Stroke-Like Episodes) (MELAS)
- Mitochondrial Myopathy (MM)
- Mitochondrial Neurogastrointestinal Encephalopathy Syndrome (MNGIE)
- Myoclonic Epilepsy Ragged-Red Fibers (MERRF)
- Neurogenic Weakness Ataxia and Retinitis Pigmentosa (NARP)
- Optic Atrophy
- Oxidative Phosphorylation (OXPHOS) Deficiency
- Pearson Syndrome
- Sensorineural Hearing Loss (SNHL)
GeneDx