MONDO_0017946 (ABeta amyloidosis, Iowa type) can be described as follows. Hereditary cerebral hemorrhage with amyloidosis (HCHWA), Iowa type is a form of HCHWA characterized by age of onset between 50-66 years of age, memory impairment, myoclonic jerks, expressive dysphagia, short-stepped gait, personality changes and lobar intracerebral hemorrhages. Also known as: ABetaD23N amyloidosis, HCHWA, Iowa type, cerebral amyloid angiopathy, APP-related, Iowa variant, hereditary cerebral haemorrhage with amyloidosis, Iowa type, hereditary cerebral hemorrhage with amyloidosis, Iowa type.