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Autosomal recessive spastic paraplegia type 44

Disease definition

Autosomal recessive spastic paraplegia type 44 (SPG44) is a very rare, complex form of hereditary spastic paraplegia characterized by a late-onset, slowly progressive spastic paraplegia associated with mild ataxia and dysarthria, upper extremity involvement (i.e. loss of finger dexterity, dysmetria), and mild cognitive impairment, without the presence of nystagmus. A hypomyelinating leukodystrophy and thin corpus callosum is observed in all cases and psychomotor development is normal or near normal. SPG44 is caused by mutations in the GJC2 gene (1q41-q42) encoding the gap junction gamma-2 protein.

ORPHA:320401

  • Synonym(s):
    • SPG44
  • Prevalence: <1 / 1 000 000
  • Inheritance: Autosomal recessive 
  • Age of onset: Adolescent, Adult
  • ICD-10: G11.4
  • OMIM: 613206
  • UMLS: C2750784
  • MeSH: -
  • GARD: -
  • MedDRA: -

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