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MK-2214

Phase 2

Early Alzheimer's Disease | Monoclonal antibody | Neurology |Merck & Company, Inc.|Last Updated: Sep 3, 2026

Success Probability

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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 Experienced an Adverse Event (AE)
Up to approximately 297 days

An AE was 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 experienced at least one AE was reported.

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

An AE was 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 discontinued study treatment due to an AE was reported.

Area Under the Concentration-Time Curve From Time 0 to 28 Days (AUC0-28) of MK-2214 in Serum After First Dose (Day 1)
Predose, 0.5, 1, 2, 4, 8, 12, and 24 hours post first dose (Day 1), Day 4, Day 8, Day 15, and predose on Day 29

AUC0-28 was defined as the area under the concentration-time curve from time 0 to 28 days of MK-2214 in serum. Blood samples were collected at prespecified time points to determine AUC0-28 of MK-2214 in serum after first dose (Day 1).

AUC0-28 of MK-2214 in Serum After Third Dose (Day 57)
Predose, 0.5, 1, 2, 4, 8, 12, and 24 hours post third dose (Day 57), Day 60, Day 64, Day 71, Day 85, Day 141, Day 197, Day 247, and Day 297

AUC0-28 was defined as the area under the concentration-time curve from time 0 to 28 days of MK-2214 in serum. Blood samples were collected at prespecified time points to determine AUC0-28 of MK-2214 in serum after third dose (Day 57).

Maximum Serum Concentration (Cmax) of MK-2214 After First Dose (Day 1)
Predose, 0.5, 1, 2, 4, 8, 12, and 24 hours post first dose (Day 1), Day 4, Day 8, Day 15, and predose on Day 29

Cmax was defined as the maximum concentration of MK-2214 observed in serum. Blood samples were collected at prespecified time points to determine Cmax of MK-2214 after first dose (Day 1).

Cmax of MK-2214 After Third Dose (Day 57)
Predose, 0.5, 1, 2, 4, 8, 12, and 24 hours post third dose (Day 57), Day 60, Day 64, Day 71, Day 85, Day 141, Day 197, Day 247, and Day 297

Cmax was defined as the maximum concentration of MK-2214 observed in serum. Blood samples were collected at prespecified time points to determine Cmax of MK-2214 after third dose (Day 57).

Time of Maximum Serum Concentration (Tmax) of MK-2214 After First Dose (Day 1)
Predose, 0.5, 1, 2, 4, 8, 12, and 24 hours post first dose (Day 1), Day 4, Day 8, Day 15, and predose on Day 29

Tmax was defined as the time to maximum serum concentration of MK-2214. Blood samples were collected at prespecified time points to determine Tmax of MK-2214 in serum after first dose (Day 1).

Tmax of MK-2214 After Third Dose (Day 57)
Predose, 0.5, 1, 2, 4, 8, 12, and 24 hours post third dose (Day 57), Day 60, Day 64, Day 71, Day 85, Day 141, Day 197, Day 247, and Day 297

Tmax was defined as the time to maximum serum concentration of MK-2214. Blood samples were collected at prespecified time points to determine Tmax of MK-2214 in serum after third dose (Day 57).

Apparent Half-Life (T1/2) of MK-2214 in Serum After Third Dose (Day 57)
Predose, 0.5, 1, 2, 4, 8, 12, and 24 hours post third dose (Day 57), Day 60, Day 64, Day 71, Day 85, Day 141, Day 197, Day 247, and Day 297

T1/2 was defined as the apparent half-life of MK-2214 observed in serum. Blood samples were collected at prespecified time points to determine t1/2 of MK-2214 in serum after third dose (Day 57).

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

Concentration of MK-2214 in CSF was defined as the CSF exposure of MK-2214. A CSF sample was to be collected on Day 85.

Free Phospho-Tau Concentration in CSF
Day 85

Concentration of free phospo-tau in CSF was defined as free phospho-tau levels in CSF after study treatment administration (MK-2214 or placebo). A CSF sample was to be collected on Day 85.

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.
Panel A: MK-2214 20 mgEXPERIMENTALParticipants were randomized to receive MK-2214 20 mg as an intravenous (IV) infusion every month (qm) for 3 months (on Days 1, 29, and 57).
Panel B: MK-2214 100 mgEXPERIMENTALParticipants were randomized to receive MK-2214 100 mg as an IV infusion qm for 3 months (on Days 1, 29, and 57).
Panel C: MK-2214 500 mgEXPERIMENTALParticipants were randomized to receive MK-2214 500 mg as an IV infusion qm for 3 months (on Days 1, 29, and 57).
Panel D: MK-2214 2000 mgEXPERIMENTALParticipants were randomized to receive MK-2214 2000 mg as an IV infusion qm for 3 months (on Days 1, 29, and 57).

Interventions

NameTypeDescription
MK-2214BIOLOGICALIV infusion
PlaceboDRUGIV infusion
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Eligibility Criteria

Age Range50 Years to 85 Years
SexALL
Healthy VolunteersNo
Study Sites80

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)

LOWAug 26, 2026NCT07033494lastUpdatePostDate: changed
LOWAug 26, 2026NCT07033494lastUpdatePostDate: changed
LOWAug 14, 2026NCT07033494lastUpdatePostDate: changed
LOWAug 14, 2026NCT07033494lastUpdatePostDate: changed
LOWJul 6, 2026NCT07033494lastUpdatePostDate: changed
LOWJul 6, 2026NCT07033494lastUpdatePostDate: changed
LOWJun 23, 2026NCT07033494lastUpdatePostDate: changed
LOWJun 23, 2026NCT07033494lastUpdatePostDate: changed

Frequently asked questions about MK-2214

What is MK-2214 used for?

MK-2214 is an investigational monoclonal antibody being developed for Alzheimer's disease, including early Alzheimer's disease. It is being studied in adults with mild cognitive impairment or mild-to-moderate Alzheimer's disease, as well as in people with early Alzheimer's disease.

What does MK-2214 target?

MK-2214 is a monoclonal antibody, but its specific molecular target has not been disclosed. The drug is being investigated for its potential effects in Alzheimer's disease, though the exact mechanism of action is not publicly detailed.

Who makes MK-2214?

MK-2214 is being developed by Merck & Company, Inc., which trades under the ticker symbol MRK. The company is conducting clinical trials to evaluate the drug's safety and efficacy in Alzheimer's disease.

What phase is MK-2214 in?

MK-2214 is in Phase 2 clinical development. A Phase 1 study has been completed, and a Phase 2 trial is currently recruiting participants with early Alzheimer's disease. The drug is investigational and has not been approved by regulatory authorities.

What clinical trials is MK-2214 in?

MK-2214 has one completed Phase 1 trial, NCT05466422, which enrolled 34 participants with mild cognitive impairment or mild-to-moderate Alzheimer's disease in the United States. A Phase 2 trial, NCT07033494, is recruiting 340 participants with early Alzheimer's disease across multiple countries.

Is MK-2214 the same as another drug?

No alternative names for MK-2214 have been disclosed. The drug is referred to solely by its development code, MK-2214, in clinical trial registries and available information.