Mild DLB, pro AD, and mild AD were older than HC AchI acetylcholinesterase inhibitor, AD Alzheimer’s disease, DLB dementia with Lewy bodies, HC healthy (elderly) controls, L left hemisphere, MMSE Mini-Mental State Examination, R right hemisphere, SD standard deviation. The gene discussed is ACHE; the disease is early-onset autosomal dominant Alzheimer disease.