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GTR Home > Conditions/Phenotypes > Progressive sclerosing poliodystrophy

Progressive sclerosing poliodystrophy

Synonyms
Alpers Syndrome; Alpers diffuse degeneration of cerebral gray matter with hepatic cirrhosis; Alpers disease; Alpers progressive infantile poliodystrophy; Alpers-Huttenlocher Syndrome; Diffuse cerebral degeneration in infancy; Infantile poliodystrophy; Mitochondrial DNA Depletion Syndrome 4A; Mitochondrial DNA depletion syndrome 4A (Alpers type); Neuronal degeneration of childhood with liver disease, progressive; Poliodystrophia cerebri progressiva; Progressive cerebral poliodystrophy
Modes of inheritance
Autosomal recessive inheritance (Orphanet)

Summary

Excerpted from the GeneReview: POLG-Related Disorders
POLG-related disorders comprise a continuum of overlapping phenotypes that were clinically defined before the molecular basis was known. POLG-related disorders can therefore be considered an overlapping spectrum of disease presenting from early childhood to late adulthood. The age of onset broadly correlates with the clinical phenotype. In individuals with early-onset disease (prior to age 12 years), liver involvement, feeding difficulties, seizures, hypotonia, and muscle weakness are the most common clinical features. This group has the worst prognosis. In the juvenile/adult-onset form (age 12-40 years), disease is typically characterized by peripheral neuropathy, ataxia, seizures, stroke-like episodes, and, in individuals with longer survival, progressive external ophthalmoplegia (PEO). This group generally has a better prognosis than the early-onset group. Late-onset disease (after age 40 years) is characterized by ptosis and PEO, with additional features such as peripheral neuropathy, ataxia, and muscle weakness. This group overall has the best prognosis.
Full text of GeneReview (by section):
Summary
GeneReview Scope
Diagnosis
Clinical Characteristics
Genetically Related (Allelic) Disorders
Differential Diagnosis
Management
Genetic Counseling
Resources
Molecular Genetics
Chapter Notes
References
Authors:
Bruce H Cohen
Patrick F Chinnery
William C Copeland
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Available tests

137 tests are in the database for this condition.

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Clinical tests (137 available)

Molecular Genetics Tests

Genes See tests for all associated and related genes

  • Also known as: MDP1, MIRAS, MTDPS4A, MTDPS4B, PEO, POLG1, POLGA, SANDO, SCAE, POLG
    Summary: DNA polymerase gamma, catalytic subunit

Clinical features

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Imported from Human Phenotype Ontology (HPO)

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