Orphanet: Autosomal recessive spastic paraplegia type 21

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Autosomal recessive spastic paraplegia type 21

Disease definition

Autosomal recessive spastic paraplegia type 21 is a complex type of hereditary spastic paraplegia characterized by an onset in adolescence or adulthood of slowly progressive spastic paraparesis associated with the additional manifestations of apraxia, cognitive and speech decline (leading to dementia and akinetic mutism in some cases), personality disturbances and extrapyramidal (e.g. oromandibular dyskinesia, rigidity) and cerebellar (i.e. dysdiadochokinesia and incoordination) signs. Subtle abnormalities (e.g. developmental delays) may be noted earlier in childhood. A thin corpus callosum and white matter abnormalities are equally reported on magnetic resonance imaging.

ORPHA:101001

Classification level: Disorder

Synonym(s):
- Mast syndrome
- SPG21
Prevalence: <1 / 1 000 000
Inheritance: Autosomal recessive
Age of onset: Childhood, Adolescent, Adult
ICD-10: G11.4
OMIM: 248900
UMLS: C1855346
MeSH: -
GARD: -
MedDRA: -

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Autosomal recessive spastic paraplegia type 21

ORPHA:101001

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