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ABeta amyloidosis, Arctic type
Hereditary cerebral hemorrhage with amyloidosis (HCHWA), Arctic type is a form of HCHWA (see this term) characterized by an age of onset of 54-61 years and progressive Alzheimer's disease-like dementia, without intracerebral hemorrhages.
ORPHA:324723Classification level: Subtype of disorder
- ABetaE22G amyloidosis
- HCHWA, Arctic type
- Hereditary cerebral hemorrhage with amyloidosis, Arctic type
- Prevalence: <1 / 1 000 000
- Inheritance: Autosomal dominant
- Age of onset: Adult, Elderly
- ICD-10: E85.4+ I68.0*
- OMIM: 605714
- UMLS: -
- MeSH: -
- GARD: -
- MedDRA: -
It has been described in one Swedish family.
HCHWA, Arctic type is due to a mutation in the APP gene on chromosome 21q21.2, encoding the beta-amyloid precursor protein. This mutation causes an increased accumulation of amyloid-beta protein in the walls of the arteries and capillaries of the meninges, cerebellar cortex and cerebral cortex, leading to the weakening and eventual rupture of these vessels.
Transmission is autosomal dominant.
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