Autosomal recessive spastic paraplegia…

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Autosomal recessive spastic paraplegia type 48

ORPHA:306511Disease

Also called SPG48

What it is

A rare, pure or complex form of hereditary spastic paraplegia usually characterized by a pure phenotype of a slowly progressive spastic paraplegia associated with urinary incontinence with an onset in mid- to late-adulthood. A complex phenotype, with the additional findings of cognitive impairment, sensorimotor polyneuropathy, ataxia, parkinsonism, and dystonia as well as thin corpus callosum and white matter lesions (seen on brain and spine magnetic resonance imaging), has also been reported.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Adult
Inheritance
Autosomal recessive
Classified as
Disease

Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.

Signs and symptoms

These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.

Gene

AP5Z1Disease-causing germline mutation(s) (loss of function)

ICD-10 codes

G11.4filed under a broader ICD-10 category — shared with 103 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Related health topics

Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.

Cross-references

GARD 17378MONDO 0013342OMIM 613647UMLS C3150901

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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