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Start free with EleplanAutosomal recessive cerebellar ataxia due to CWF19L1 deficiency
ORPHA:453521Disease
Also called SCAR17 · Spinocerebellar ataxia autosomal recessive type 17
What it is
A rare autosomal recessive cerebellar ataxia characterized by early onset of slowly progressive cerebellar atrophy, clinically manifesting with extremity and truncal ataxia, global developmental delay, intellectual impairment, nystagmus, dysarthria, intention tremor, and pyramidal signs, among others.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Infancy, Neonatal
- 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
Common30–79%
23- Abnormality of the distal phalanx of the thumb
- Babinski sign
- Cerebellar vermis hypoplasia
- Clumsiness
- Delayed speech and language development
- Dysarthria
- Dysmetria
- Dystonia
- Floppy infant
- Frequent falls
- Gait ataxia
- Global developmental delay
- Horizontal nystagmus
- Intellectual disability, moderate
- Intention tremor
- Mild microcephaly
- Monotonic speech
- Nonprogressive cerebellar ataxia
- Oculomotor apraxia
- Slurred speech
- Synophrys
- Truncal ataxia
- Unsteady gait
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
ICD-10 codes
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
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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