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Start free with EleplanAGel amyloidosis
ORPHA:85448Disease
Also called Familial amyloid polyneuropathy type IV · Familial amyloidosis, Finnish type · Gelsolin amyloidosis · Hereditary amyloidosis, Finnish type
What it is
A rare, systemic amyloidosis characterized by a triad of ophthalmologic, neurologic and dermatologic findings due to the deposition of gelsolin amyloid fibrils in these tissues. Clinical manifestations include corneal lattice dystrophy, cranial neuropathy, especially affecting the facial nerve, bulbar signs, cutis laxa, increased skin fragility, and less commonly peripheral neuropathy and renal failure.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Adult
- Inheritance
- Autosomal dominant
- 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%
6Common30–79%
19- Abnormality of the nervous system
- Arrhythmia
- Ataxia
- Bruising susceptibility
- Cataract
- Constrictive median neuropathy
- Corneal ulceration
- Cutis laxa
- Distal peripheral sensory neuropathy
- Dysphagia
- Edema
- Facial palsy
- Hearing impairment
- Myokymia
- Polyneuropathy
- Reduced visual acuity
- Regional abnormality of skin
- Visual impairment
- Xerostomia
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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