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GTR Home > Conditions/Phenotypes > Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4

Progressive external ophthalmoplegia with mitochondrial DNA deletions, autosomal dominant 4

Synonyms
PROGRESSIVE EXTERNAL OPHTHALMOPLEGIA, AUTOSOMAL DOMINANT 4

Summary

Progressive external ophthalmoplegia-4 (PEOA4) is an autosomal dominant form of mitochondrial disease that variably affects skeletal muscle, the nervous system, the liver, and the gastrointestinal tract. Age at onset ranges from infancy to adulthood. The phenotype ranges from relatively mild, with adult-onset skeletal muscle weakness and weakness of the external eye muscles, to severe, with a multisystem disorder characterized by delayed psychomotor development, lactic acidosis, constipation, and liver involvement (summary by Young et al., 2011). For a general phenotypic description and a discussion of genetic heterogeneity of autosomal dominant progressive external ophthalmoplegia, see PEOA1 (157640). [from OMIM]

Available tests

61 tests are in the database for this condition.

Clinical tests (61 available)

Molecular Genetics Tests

Genes See tests for all associated and related genes

  • Also known as: HP55, MTDPS16, MTDPS16A, MTDPS16B, MTPOLB, PEOA4, POLB, POLG-BETA, POLGB, POLG2
    Summary: DNA polymerase gamma 2, accessory subunit

Clinical features

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Imported from Human Phenotype Ontology (HPO)

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