Acys Amyloidosis

A form of hereditary cerebral hemorrhage with amyloidosis characterized by an age of onset of 20-30 years, major systemic amyloidosis and recurrent lobar intracerebral hemorrhages. Unlike other forms of hereditary cerebral hemorrhage with amyloidosis, this subtype is due to a mutation in the CST3 gene (20p11.2), encoding the precursor protein cystatin C.