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MK-1406

Phase 1

Healthy | Small molecule | Other |Merck & Company, Inc.|Last Updated: Aug 3, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLED
Total Trials1
Total Enrollment400

FDA Designations

No designations recorded

Clinical trial landscape

MK-1406 · 1 trial · 1 indication

Phase 1 1
NCT07743151A Clinical Trial of MK-1406 in Healthy Participants (MK-1406-008)Healthy
NOT YET_RECRUITING400 Analytics
PHASE1NOT YET_RECRUITING
A Clinical Trial of MK-1406 in Healthy Participants (MK-1406-008)
HealthyUnlock trial analytics

Study Endpoints

Primary Endpoints

Part 1: Area Under the Concentration Time Curve From Time 0 to 4 Weeks (AUC0-4w) of MK-1406
Predose and at designated timepoints up to 4 weeks postdose

Blood samples will be collected at pre-specified timepoints to determine the AUC0-4w of MK-1406.

Part 1 and Part 2: Number of Participants Who Experience One or More Adverse Events (AEs)
Up to approximately 43 days postdose

An AE is 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 an AE will be reported.

Part 1 and Part 2: Number of Participants Who Experience At Least One Solicited Injection-Site Reaction
Up to approximately 7 days postdose

Solicited injection-site reactions include tenderness, pain, redness/erythema, and swelling. Participants will record injection site reactions using a paper diary. The number of participants with solicited injection-site reactions will be reported.

Part 1 and Part 2: Number of Participants Who Discontinue Study Due to an AE
Up to approximately 43 days postdose

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. The number of participants who discontinue study due to an AE will be reported.

Secondary Endpoints

Part 1: Maximum Plasma Concentration (Cmax) of MK-1406
Predose and at designated timepoints up to 4 weeks postdose
Part 1: Time to Maximum Plasma Concentration (Tmax) of MK-1406
Predose and at designated timepoints up to 4 weeks postdose
Part 1: Plasma Concentration of MK-1406 at 4 Weeks (C4w)
Predose and at designated timepoints up to 4 weeks postdose
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeBASIC_SCIENCE

Treatment Arms

ArmTypeDescription
MK-1406 3-InjectionsEXPERIMENTALParticipants receive 3 subcutaneous (SQ) injections of MK-1406 on Day 1.
MK-1406 2-InjectionsEXPERIMENTALParticipants receive 2 SQ injections of MK-1406 on Day 1.

Interventions

NameTypeDescription
MK-1406DRUGSubcutaneous administration
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Eligibility Criteria

Age Range18 Years to 64 Years
SexALL
Healthy VolunteersYes

Inclusion Criteria: The main inclusion criteria include but are not limited to the following: * Is in good health * Has body mass index (BMI) 18.0 to 32.0 kg/m\^2 Exclusion Criteria: The main exclusion criteria include but are not limited to the following: * History of clinically significant en...

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Recent Changes (Last 90 Days)

LOWAug 3, 2026NCT07743151NEW_TRIAL: changed
LOWAug 3, 2026NCT07743151NEW_TRIAL: changed

Frequently asked questions about MK-1406

What is MK-1406 used for?

MK-1406 is an investigational small molecule being developed by Merck & Company, Inc. for use in healthy participants. It is currently in Phase 1 clinical development, with a single trial designed to evaluate its effects in healthy volunteers.

Who makes MK-1406?

MK-1406 is being developed by Merck & Company, Inc., which trades under the ticker symbol MRK. The company is conducting a Phase 1 clinical trial of this investigational small molecule in healthy participants.

What phase is MK-1406 in?

MK-1406 is in Phase 1 clinical development. It is an investigational drug, meaning it has not been approved by regulatory authorities and is still undergoing clinical testing in healthy participants.

What clinical trials is MK-1406 in?

MK-1406 is being studied in a single Phase 1 clinical trial with the identifier NCT07743151. This trial, titled "A Clinical Trial of MK-1406 in Healthy Participants (MK-1406-008)," is not yet recruiting and plans to enroll 400 healthy participants aged 18 years and older.

Is MK-1406 being tested in healthy volunteers?

Yes, MK-1406 is being tested in healthy volunteers. The Phase 1 trial NCT07743151 is specifically designed for healthy participants, with an enrollment target of 400 individuals. The trial is controlled but not double-blinded.