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MK-4082

Phase 1

Healthy | Small molecule | Other |Merck & Company, Inc.|Last Updated: Aug 5, 2026

Target and mechanism

Molecular targetGLP-1
Target classReceptor
ModalitySmall molecule

Also known as MK-4082 Formulation 1 (F1), MK-4082 Formulation 1, MK-4082 Formulation 2 (F2), MK-4082 Formulation 2, MK-4082 Formulation 4 (F4), MK-4082 Formulation 4

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials2
Total Enrollment148

FDA Designations

No designations recorded

Clinical trial landscape

MK-4082 · 2 trials · 1 indication

Phase 1 2
NCT07697625A Clinical Trial of MK-4082 in Healthy Participants (MK-4082-005)Healthy
RECRUITING28 Analytics
NCT07388667A Clinical Study of MK-4082 in Healthy Overweight Participants (MK-4082-002)Healthy
ACTIVE NOT_RECRUITING120 Analytics
PHASE1RECRUITING
A Clinical Trial of MK-4082 in Healthy Participants (MK-4082-005)
HealthyUnlock trial analytics
PHASE1ACTIVE NOT_RECRUITING
A Clinical Study of MK-4082 in Healthy Overweight Participants (MK-4082-002)
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Study Endpoints

Primary Endpoints

Part 1: Area Under the Concentration-Time Curve From Time 0 to Infinity (AUC0-∞) of MK-4082
At designated timepoints (up to approximately 1 week postdose)

Blood samples will be collected to determine the AUC0-∞ of MK-4082.

Part 1: Maximum Plasma Concentration (Cmax) of MK-4082
At designated timepoints (up to approximately 1 week postdose)

Blood samples will be collected to determine the Cmax of MK-4082.

Part 1: Number of Participants Who Experience an Adverse Event (AE)
Up to approximately 31 days

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 experience an AE will be reported.

Part 1: Number of Participants Who Discontinue Study Intervention Due to an AE
Up to approximately 17 days

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 intervention due to an AE will be reported.

Number of Participants Who Experience an Adverse Event (AE)
Up to approximately 98 Days

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 experience an AE will be reported.

Number of Participants Who Discontinue Study Treatment Due to an AE
Up to approximately 84 Days

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 treatment due to an AE will be reported.

Secondary Endpoints

Part 2: AUC0-∞ of MK-4082
At designated timepoints (up to approximately 1 week postdose)
Part 2: AUC0-24 of MK-4082
At designated timepoints (up to 24 hours postdose)
Part 2: Cmax of MK-4082
At designated timepoints (up to approximately 1 week postdose)
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSEQUENTIAL
PurposeBASIC_SCIENCE

Treatment Arms

ArmTypeDescription
MK-4082EXPERIMENTALParticipants will move sequentially through 2 periods in Part 1. In Period 1, participants will receive a single oral dose of MK-4082 on Day 1. In Period 2, participants will receive a single oral dose of MK-4082 on Day 1 plus oral diltiazem for multiple days. In Part 2 participants receive a single dose of MK-4082 or placebo.
Panel A: Dose Escalation to Dosage 1EXPERIMENTALParticipants receive escalating doses of oral MK-4082 once daily (QD) or a dose-matched placebo to reach maintenance dose 1.
Panel B: Dose Escalation to Dosage 2EXPERIMENTALParticipants receive escalating doses of oral MK-4082 QD or a dose-matched placebo to reach maintenance dose 2.
Panel C: Dose Escalation to Dosage 3EXPERIMENTALParticipants receive escalating doses of oral MK-4082 once daily (QD) or a dose-matched placebo to reach maintenance dose 3.
Panel D: Dose Escalation to Dosage 4EXPERIMENTALParticipants receive escalating doses of oral MK-4082 once daily (QD) or a dose-matched placebo to reach maintenance dose 4.
Panel E: Dose Escalation to Dosage 5EXPERIMENTALParticipants receive escalating doses of oral MK-4082 once daily (QD) or a dose-matched placebo to reach maintenance dose 5.

Interventions

NameTypeDescription
MK-4082DRUGOral administration
DiltiazemDRUGOral administration
Rescue medicationDRUGAll participants will receive ondansetron as a rescue medication. Ondansetron is a medication used to prevent nausea or vomiting.
PlaceboDRUGOral Tablet
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Eligibility Criteria

Age Range18 Years to 55 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: The main inclusion criteria include but are not limited to the following: * Is in good health * Body mass index (BMI) between 18 and 32 kg/m\^2, inclusive Exclusion Criteria: The main exclusion criteria include but are not limited to the following: * Has a history of previou...

Countries:United States
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Recent Changes (Last 90 Days)

LOWAug 5, 2026NCT07697625Status: NOT_YET_RECRUITING → RECRUITING
LOWJul 13, 2026NCT07697625NEW_TRIAL: changed
LOWJul 13, 2026NCT07697625NEW_TRIAL: changed
LOWJun 16, 2026NCT07388667primaryCompletionDate: changed
LOWJun 16, 2026NCT07388667primaryCompletionDate: changed
LOWJun 16, 2026NCT07388667primaryCompletionDate: changed

Frequently asked questions about MK-4082

What is MK-4082 used for?

MK-4082 is an investigational small molecule being studied in healthy participants, including healthy overweight participants, in early-stage clinical trials. It is not approved for any condition and is currently in Phase 1 clinical development.

What does MK-4082 target?

MK-4082 targets the GLP-1 receptor. It is a small molecule designed to interact with this receptor, which is involved in metabolic regulation. The drug is being evaluated in healthy participants in Phase 1 trials.

Who makes MK-4082?

MK-4082 is being developed by Merck & Company, Inc., which trades on the New York Stock Exchange under the ticker MRK. The company is conducting Phase 1 clinical trials of this investigational small molecule in healthy participants.

What phase is MK-4082 in?

MK-4082 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. Two Phase 1 trials are ongoing, one active but not recruiting and one currently recruiting participants.

What clinical trials is MK-4082 in?

MK-4082 is being studied in two Phase 1 trials. NCT07388667 is a study in healthy overweight participants with 120 enrolled, active but not recruiting. NCT07697625 is a trial in healthy participants with 28 enrolled, currently recruiting. Both are conducted in the United States.

Is MK-4082 the same as MK-4082 Formulation 1 or Formulation 2?

Yes, MK-4082 is also known as MK-4082 Formulation 1 (F1), MK-4082 Formulation 2 (F2), and MK-4082 Formulation 4 (F4). These names refer to different formulations of the same investigational drug being tested in clinical trials.