POLG2

DNA polymerase gamma 2, accessory subunit
OMIM: 604983, Gene2Phenotype

14 panels

Panel Reviews Mode of inheritance Details
14 panels
Green POLG2 in Rhabdomyolysis and metabolic muscle disorders


Level 2: Neurology
Version 6.9
Latest signed off version: v6.8 (12 Aug 2026)

Component of the following Super Panels:

  • Hypotonic infant
  • Other rare neuromuscular disorders
  • review BOTH monoallelic and biallelic, autosomal or pseudoautosomal
    Sources
    • Expert Review Green
    • Radboud University Medical Center, Nijmegen
    • UKGTN
    • Illumina TruGenome Clinical Sequencing Services
    • Emory Genetics Laboratory
    • Literature
    Phenotypes
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4 610131
    Green POLG2 in White matter disorders and cerebral calcification - childhood onset


    Level 2: Neurology
    Version 8.7
    Latest signed off version: v8.6 (12 Aug 2026)

    Component of the following Super Panels:

  • Leukodystrophy, childhood onset
  • Paediatric disorders
  • review BOTH monoallelic and biallelic, autosomal or pseudoautosomal
    Sources
    • Expert Review Green
    Phenotypes
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4
    Red POLG2 in Mitochondrial liver disease


    Level 2: Mitochondrial
    Version 1.17
    Latest signed off version: v1.16 (12 Aug 2026)

    review BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
    Sources
    • Expert Review Red
    • NHS GMS
    Phenotypes
    • Mitochondrial DNA depletion syndrome syndrome 16 (hepatic type), OMIM:618528
    • Mitochondrial DNA depletion syndrome 16B (neuroophthalmic type), OMIM:619425
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131
    Green POLG2 in Inherited white matter disorders

    Level 3: White matter disorders
    Level 2: Neurology and neurodevelopmental disorders
    Version 1.186

    review BOTH monoallelic and biallelic, autosomal or pseudoautosomal
    Sources
    • Expert Review Green
    • Emory Genetics Laboratory
    • UKGTN
    • Radboud University Medical Center, Nijmegen
    • Illumina TruGenome Clinical Sequencing Services
    • Expert list
    Phenotypes
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4 610131
    Green POLG2 in Mitochondrial DNA maintenance disorder


    Level 2: Mitochondrial
    Version 3.11
    Latest signed off version: v3.10 (12 Aug 2026)

    review BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
    Sources
    • NHS GMS
    • Expert Review Green
    Phenotypes
    • Mitochondrial DNA depletion syndrome syndrome 16 (hepatic type), OMIM:618528
    • Mitochondrial DNA depletion syndrome 16B (neuroophthalmic type), OMIM:619425
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131
    Green POLG2 in Undiagnosed metabolic disorders

    Level 3: Specific metabolic abnormalities
    Level 2: Metabolic disorders
    Version 1.645

    review BOTH monoallelic and biallelic, autosomal or pseudoautosomal
    Sources
    • Expert Review Green
    • Literature
    Phenotypes
    • Mitochondrial DNA depletion syndrome syndrome 16 (hepatic type), OMIM:618528
    • Mitochondrial DNA depletion syndrome 16B (neuroophthalmic type), OMIM:619425
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131
    Green POLG2 in Likely inborn error of metabolism


    Level 2: Metabolic
    Version 9.30
    Latest signed off version: v9.29 (12 Aug 2026)

    Component of the following Super Panels:

  • Hypotonic infant
  • Leukodystrophy, childhood onset
  • Paediatric disorders
  • Unexplained death in infancy and sudden unexplained death in childhood
  • review BOTH monoallelic and biallelic, autosomal or pseudoautosomal
    Sources
    • London North GLH
    • NHS GMS
    • Expert Review Green
    • Victorian Clinical Genetics Services
    Phenotypes
    • Mitochondrial DNA depletion syndrome syndrome 16 (hepatic type), OMIM:618528
    • Mitochondrial DNA depletion syndrome 16B (neuroophthalmic type), OMIM:619425
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131
    Green POLG2 in Possible mitochondrial disorder, nuclear genes


    Level 2: Mitochondrial
    Version 5.23
    Latest signed off version: v5.17 (12 Aug 2026)

    review BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
    Sources
    • NHS GMS
    • Expert Review Green
    Phenotypes
    • Mitochondrial DNA depletion syndrome syndrome 16 (hepatic type), OMIM:618528
    • Mitochondrial DNA depletion syndrome 16B (neuroophthalmic type), OMIM:619425
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131
    Green POLG2 in Fetal anomalies


    Level 2: Fetal (including NIPD)
    Version 8.5
    Latest signed off version: v8.0 (12 Aug 2026)

    review BOTH monoallelic and biallelic (but BIALLELIC mutations cause a more SEVERE disease form), autosomal or pseudoautosomal
    Sources
    • Expert Review Green
    • Expert list
    Phenotypes
    • Mitochondrial DNA depletion syndrome syndrome 16 (hepatic type), OMIM:618528
    • Mitochondrial DNA depletion syndrome 16B (neuroophthalmic type), OMIM:619425
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131
    Amber POLG2 in Early onset or syndromic epilepsy


    Level 2: Neurology
    Version 9.74
    Latest signed off version: v9.56 (12 Aug 2026)

    Component of the following Super Panels:

  • Paediatric disorders
  • Unexplained death in infancy and sudden unexplained death in childhood
  • review BOTH monoallelic and biallelic, autosomal or pseudoautosomal
    Sources
    • Expert Review Amber
    • Literature
    Phenotypes
    • Mitochondrial DNA depletion syndrome syndrome 16 (hepatic type), OMIM:618528
    • Mitochondrial DNA depletion syndrome 16B (neuroophthalmic type), OMIM:619425
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131
    Green POLG2 in Mitochondrial disorders


    Level 2: Mitochondrial
    Version 10.23
    Latest signed off version: v10.18 (12 Aug 2026)

    Component of the following Super Panels:

  • Leukodystrophy, childhood onset
  • review BOTH monoallelic and biallelic, autosomal or pseudoautosomal
    Sources
    • Victorian Clinical Genetics Services
    • Illumina TruGenome Clinical Sequencing Services
    • UKGTN
    • Radboud University Medical Center, Nijmegen
    • Expert list
    • Expert
    Phenotypes
    • Mitochondrial DNA depletion syndrome syndrome 16 (hepatic type), OMIM:618528
    • Mitochondrial DNA depletion syndrome 16B (neuroophthalmic type), OMIM:619425
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131
    Red POLG2 in Hereditary ataxia, adult onset


    Level 2: Neurology
    Version 9.11
    Latest signed off version: v9.4 (12 Aug 2026)

    Component of the following Super Panels:

  • Adult-onset neurological disorders
  • review BIALLELIC, autosomal or pseudoautosomal
    Sources
    • Expert Review Red
    • London North GLH
    • NHS GMS
    • Wessex and West Midlands GLH
    Phenotypes
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant, 610131
    Red POLG2 in Dystonia, chorea or related movement disorder, childhood onset


    Level 2: Neurology
    Version 8.14
    Latest signed off version: v8.13 (12 Aug 2026)

    review Not set
    Sources
    • Expert Review Red
    • London North GLH
    Green POLG2 in Acute rhabdomyolysis


    Level 2: Neurology
    Version 3.1
    Latest signed off version: v3.0 (12 Aug 2026)

    review BOTH monoallelic and biallelic, autosomal or pseudoautosomal
    Sources
    • NHS GMS
    • Expert Review Green
    Phenotypes
    • Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4, OMIM:610131