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GTR Home > Conditions/Phenotypes > Infantile-onset ascending hereditary spastic paralysis

Infantile-onset ascending hereditary spastic paralysis

Synonyms
Autosomal Recessive Juvenile Amyotrophic Lateral Sclerosis; Spastic paralysis, infantile onset ascending
Modes of inheritance
Autosomal recessive inheritance (Orphanet)

Summary

Excerpted from the GeneReview: ALS2-Related Disorder
ALS2-related disorder involves retrograde degeneration of the upper motor neurons of the pyramidal tracts and comprises a clinical continuum of the following three phenotypes: Infantile ascending hereditary spastic paraplegia (IAHSP), characterized by onset of spasticity with increased reflexes and sustained clonus of the lower limbs within the first two years of life, progressive weakness and spasticity of the upper limbs by age seven to eight years, and wheelchair dependence in the second decade with progression toward severe spastic tetraparesis and a pseudobulbar syndrome caused by progressive cranial nerve involvement. Juvenile primary lateral sclerosis (JPLS), characterized by upper motor neuron findings of pseudobulbar palsy and spastic quadriplegia without dementia or cerebellar, extrapyramidal, or sensory signs. Juvenile amyotrophic lateral sclerosis (JALS or ALS2), characterized by onset between ages three and 20 years. All affected individuals show a spastic pseudobulbar syndrome (spasticity of speech and swallowing) together with spastic paraplegia. Some individuals are bedridden by age 12 to 50 years.
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:
Richard W Orrell
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Available tests

26 tests are in the database for this condition.

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Clinical tests (26 available)

Molecular Genetics Tests

Genes See tests for all associated and related genes

  • Also known as: ALS2CR6, ALSJ, IAHSP, PLSJ, ALS2
    Summary: alsin Rho guanine nucleotide exchange factor ALS2

Clinical features

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Imported from Human Phenotype Ontology (HPO)

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