Autosomal recessive cerebellar…

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Autosomal recessive cerebellar ataxia-epilepsy-intellectual disability syndrome due to TUD deficiency

ORPHA:404493Disease

Also called SCAR23 · Spinocerebellar ataxia autosomal recessive type 23

What it is

A rare hereditary ataxia characterized by an early onset symptomatic generalized epilepsy, progressive cerebellar ataxia resulting in significant difficulties to walk or wheelchair dependency, and intellectual disability.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Childhood, Infancy
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

TDP2Disease-causing germline mutation(s)

ICD-10 codes

G11.1filed under a broader ICD-10 category — shared with 40 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

MONDO 0014846OMIM 616949UMLS C4750914

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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