NCT06721156 · Phase 2 · ACTIVE NOT RECRUITING
A Study to Evaluate the Efficacy and Safety of MK-1167 in Participants With Alzheimer's Disease Dementia (MK-1167-008)
This trial is testing MK-1167, an experimental drug given alongside a standard Alzheimer's medication called an acetylcholinesterase inhibitor. Researchers want to know if MK-1167 improves memory and thinking in people who already have mild to moderate Alzheimer's dementia. It is a Phase 2 trial, meaning they are testing whether it works and is safe — it is not approved or proven yet.
You may qualify if
- Has mild to moderate Alzheimer's Disease (AD) dementia (ie, Stage 4 or Stage 5 AD) based on the Alzheimer's Association Revised Criteria for Diagnosis and Staging of Alzheimer's Disease
- Has a Mini-Mental State Examination (MMSE) score of 12 to 24 (inclusive)
- Is using acetylcholinesterase inhibitors (AChEI) therapy for management of AD dementia
- Has a designated study partner who can fulfill the requirements of this study. The study partner will need to spend sufficient time with the participant to be familiar with their overall function and behavior and be able to provide adequate information about the participant needed for the study including, knowledge of functional and basic activities of daily life, work/educational history, cognitive performance, emotional/psychological state, and general health status
You're excluded if
- Has a known history of stroke or cerebrovascular disease
- Has diagnosis of a clinically relevant central nervous system (CNS) disease other than AD dementia or other condition that negatively impacts cognition or cognitive status chronically
- Has structural brain disease
- Has a history of seizures or epilepsy
- Has any other major CNS trauma, or infections that affect brain function (eg, Human immunodeficiency virus (HIV), syphilis, and/or neurological sequelae of Coronavirus disease caused by severe acute respiratory syndrome coronavirus 2 (COVID-19), including impact on cognition)
- Has major medical illness or unstable medical condition
- Has a history of malignancy
- Resides in a nursing home or assisted care facility with need for direct continuous medical care and nursing supervision (with protocol-specified exceptions)
- Has liver disease, including but not limited to chronic viral hepatitis, nonviral hepatitis, cirrhosis, malignancies, autoimmune liver diseases
The sponsor's own eligibility wording, lightly reformatted. The study team makes the final eligibility decision — worth discussing with your doctor.
Eligibility criteria as of 2026-03-16