Adan Amyloidosis, also known as familial dementia, danish type, is related to cerebral amyloid angiopathy, itm2b-related, 2 and itm2b amyloidosis, and has symptoms including cerebellar ataxia An important gene associated with Adan Amyloidosis is ITM2B (Integral Membrane Protein 2B). Affiliated tissues include bone and brain.