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MK-2214

Phase 2

Early Alzheimer's Disease | Monoclonal antibody | Neurology |Merck & Company, Inc.|Last Updated: Jul 6, 2026

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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment340
FDA Designations
No designations recorded
Clinical trial landscape

MK-2214 · 2 trials · 2 indications

Phase 2 1Phase 1 1
NCT07033494A Clinical Study of MK-2214 in People With Early Alzheimer's Disease (MK-2214-004)Early Alzheimer's Disease
RECRUITING340 Analytics
PHASE2RECRUITING
A Clinical Study of MK-2214 in People With Early Alzheimer's Disease (MK-2214-004)
Early Alzheimer's DiseaseUnlock trial analytics
Study Endpoints
Primary Endpoints
Change from Baseline in Tau PET Standardized Uptake Value Ratio (SUVr)
Baseline, up to approximately 23 months

Participants will have tau PET imaging to assess tau pathology. Tau is a protein that accumulates in AD \& damages brain cells. SUVr is SUV in the region of interest divided by SUV in a reference region (cerebellum). The change from baseline in tau PET SUVr will be reported.

Number of Participants Who Experience One or More Adverse Events (AEs)
Up to approximately 26 months

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The number of participants who experience one or more AEs will be reported.

Number of Participants Who Discontinue Study Intervention Due to an AE
Up to approximately 23 months

An AE is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a study intervention. The number of participants who discontinue study intervention due to an AE will be reported.

Number of Participants Who Experience At Least One Adverse Event (AE)
Up to approximately 297 days

An AE is defined as any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. The number of participants who experience at least one AE will be presented.

Number of Participants Who Discontinue Study Treatment Due to an AE
Up to approximately 57 days

An AE is defined as any untoward medical occurrence in a participant, temporally associated with the use of study treatment, whether or not considered related to the study treatment. The number of participants who discontinue study treatment due to an AE will be presented.

Serum Area Under the Concentration-Time Curve of MK-2214 from Time 0 to 28 Hours (AUC0-28) After First and Third Dose
At designated time points (up to 85 days)

AUC is a measure of the extrapolated mean concentration in serum. Blood samples will be collected pre-dose and post-dose at designated timepoints to determine AUC0-28 of MK-2214.

Serum Maximum Concentration (Cmax) of MK-2214 After First and Third Dose
At designated time points (up to 85 days)

Cmax is the maximum concentration of the drug observed in plasma. Blood samples will be collected pre-dose and post-dose at designated timepoints to determine Cmax of MK-2214.

Serum Time to Maximum Concentration (Tmax) of MK-2214 After First and Third Dose
At designated time points (up to 85 days)

Tmax is the amount of time required to reach Cmax. Blood samples will be collected pre-dose and post-dose at designated timepoints to determine Tmax of MK-2214.

Serum Apparent Terminal Half-Life (t1/2) of MK-2214 After First and Third Dose
At designated time points (up to 85 days)

t1/2 is the time required for 50% of drug to be cleared from serum. Blood samples will be collected pre-dose and post-dose at designated timepoints to determine t1/2 of MK-2214.

Concentration of MK-2214 in Cerebrospinal Fluid (CSF) at Day 85 (C85d)
Day 85

CSF concentration of MK-2214 will be presented for Day 85.

Percentage change from baseline to Day 29 in free phospho-tau in CSF
Baseline and Day 29 pre-dose

Free phospho-tau in CSF will be determined for participants using the individual percent of baseline values (100\* free phospho-tau / baseline).

Percentage change from baseline to Day 85 in free phospho-tau in CSF
Baseline and Day 85

Free phospho-tau in CSF will be determined for participants using the individual percent of baseline values (100\* free phospho-tau / baseline).

Secondary Endpoints
Change from Baseline in the Clinical Dementia Rating-Sum of Boxes (CDR-SB) Total Score
Baseline, up to approximately 23 months
Change from Baseline in the Composite Tau PET SUVr in Braak Region III and IV
Baseline, up to approximately 23 months
Change from Baseline in the Composite Tau PET SUVr
Baseline, up to approximately 23 months
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
MK-2214EXPERIMENTALParticipants will receive MK-2214 via intravenous (IV) infusion every 4 weeks (q4w) during the study.
PlaceboPLACEBO_COMPARATORParticipants will receive a placebo via IV infusion q4w during the study.
Interventions
NameTypeDescription
MK-2214BIOLOGICALIV infusion
PlaceboDRUGIV infusion
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Eligibility Criteria
Age Range50 Years to 85 Years
SexALL
Healthy VolunteersNo
Study Sites79

Inclusion Criteria: The main inclusion criteria include but are not limited to the following: * Has mild cognitive impairment (MCI) or mild dementia due to Alzheimer's Disease (AD) * Has a designated study partner who can fulfill the requirements of this study * If on an approved AD therapy for sy...

Countries:United StatesArgentinaAustraliaBelgiumCanadaJapanNetherlandsSingaporeSouth KoreaSpainUnited Kingdom
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Recent Changes (Last 90 Days)
LOWJul 6, 2026NCT07033494lastUpdatePostDate: changed
LOWJul 6, 2026NCT07033494lastUpdatePostDate: changed
LOWJun 23, 2026NCT07033494lastUpdatePostDate: changed
LOWJun 23, 2026NCT07033494lastUpdatePostDate: changed
LOWMay 27, 2026NCT07033494lastUpdatePostDate: changed
LOWMay 27, 2026NCT07033494lastUpdatePostDate: changed
LOWMay 26, 2026NCT07033494primaryCompletionDate: changed
LOWMay 24, 2026NCT07033494studyFirstPostDate: changed