Study Status: Completed
Recruit Status: Completed
Study Type: Observational
Official Title: The Occurrence of the ApoE4 Allele in Agitated In-Patients With Late-Onset Alzheimer's Disease Compared to Age- and Gender-Matched, Non-Agitated In-Patients With
Brief Summary: The purpose of this clinical research study is to determine if a specific genetic allele is involved with the development of agitation in patients with late-onset Alzheimer's Disease (AD). The study will compare the results of genetic testing between two groups: individuals with late-onset AD who show signs of agitation and individuals with late-onset AD who do not show signs of agitation.