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Start free with EleplanCataract-growth hormone deficiency-sensory neuropathy-sensorineural hearing loss-skeletal dysplasia syndrome
ORPHA:436174Disease
Also called CAGSSS
What it is
A rare mitochondrial disease characterized by a highly variable phenotypic spectrum comprising delayed motor development, peripheral neuropathy, cataract, short stature due to growth hormone deficiency, nystagmus, sensorineural hearing loss, dysmorphic facial features, and skeletal abnormalities consistent with spondyloepimetaphyseal dysplasia. Hyperextensible joints, achalasia, and telangiectasia have also been described. Cognition is normal. Atrophy of the pituitary gland has been observed in brain imaging.
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
Very common80–99%
24- Achalasia
- Bilateral sensorineural hearing impairment
- Cataract
- Cervical spinal canal stenosis
- Decreased response to growth hormone stimulation test
- Developmental cataract
- Fasting hypoglycemia
- Genu valgum
- Hip dislocation
- Motor delay
- Narrow mouth
- Periarticular subcutaneous nodules
- Peripheral neuropathy
- Prelingual sensorineural hearing impairment
- Progressive sensorineural hearing impairment
- Prominent forehead
- Scoliosis
- Sensorineural hearing impairment
- Short stature
- Skeletal dysplasia
- Spinal canal stenosis
- Spondyloepiphyseal dysplasia
- Thick eyebrow
- Thoracic kyphoscoliosis
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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