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Enlicitide Chloride

Phase 1

Moderate Renal Impairment | Small molecule | Nephrology |Merck & Company, Inc.|Trials Updated: Aug 19, 2026

Enlicitide Chloride development status

Highest phase Phase 1
Registered trials 4 across 1 sponsor since Oct 2021

Enlicitide Chloride target and mechanism

Target class-Tide (Peptide)
ModalitySmall molecule

Also known as [¹⁴C]Enlicitide chloride, MK-0616

Success Probability

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Market & Valuation

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Trial Design

CONTROLLED
Total Trials3
Total Enrollment98

FDA Designations

No designations recorded

Enlicitide Chloride clinical trials

Enlicitide Chloride · 3 trials · 3 indications

Phase 1 3
NCT06592339A Study of MK-0616 in Healthy Adult Participants (MK-0616-009)Hypercholesterolemia
COMPLETED24 Analytics
NCT06655311A Study of Enlicitide Chloride (MK-0616) in Healthy Participants and Participants Taking Statins (MK-0616-012)Healthy
COMPLETED56 Analytics
NCT05070390A Study of Enlicitide Chloride (MK-0616 Oral PCSK9 Inhibitor) in Participants With Moderate Renal Impairment (MK-0616-007)Moderate Renal Impairment
COMPLETED18 Analytics
PHASE1COMPLETED
A Study of MK-0616 in Healthy Adult Participants (MK-0616-009)
HypercholesterolemiaUnlock trial analytics
PHASE1COMPLETED
A Study of Enlicitide Chloride (MK-0616) in Healthy Participants and Participants Taking Statins (MK-0616-012)
HealthyUnlock trial analytics
PHASE1COMPLETED
A Study of Enlicitide Chloride (MK-0616 Oral PCSK9 Inhibitor) in Participants With Moderate Renal Impairment (MK-0616-007)
Moderate Renal ImpairmentUnlock trial analytics

Study Endpoints

Primary Endpoints

Area Under the Concentration-Time Curve from Time 0 to Infinity (AUC0-Inf) of MK-0616
Predose and at designated timepoints up to 168 hours postdose

Blood samples will be collected to determine the AUC0-inf of MK-0616.

Area Under the Concentration-Time Curve from Time 0 to 24 hours (AUC0-24hr) of MK-0616
Predose and at designated timepoints up to 24 hours postdose

Blood samples will be collected to determine the AUC0-24 of MK-0616.

Area Under the Concentration-Time Curve from Time 0 to Last (AUC0-Last) of MK-0616
Predose and at designated timepoints up to 168 hours postdose

Blood samples will be collected to determine the AUC0-last of MK-0616.

Maximum Plasma Concentration (Cmax) of MK-0616
Predose and at designated timepoints up to 168 hours postdose

Blood samples will be collected to determine the Cmax of MK-0616.

Maximum Plasma Concentration (C24) of MK-0616
Predose and at designated timepoints up to 24 hours postdose

Blood samples will be collected to determine the C24 of MK-0616.

Apparent Terminal Half-life (t1/2) of MK-0616
Predose and at designated timepoints up to 168 hours postdose

Blood samples will be collected to determine the apparent t1/2 of MK-0616.

Time to Maximum Plasma Concentration (Tmax) of MK-0616
Predose and at designated timepoints up to 168 hours postdose

Blood samples will be collected at pre-specified timepoints to determine the Tmax of MK-0616.

Number of Participants Who Experience an Adverse Event (AE)
Up to approximately 56 days

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.

Number of Participants Who Discontinue Study Treatment Due to an AE
Up to approximately 42 days

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 discontinue study treatment due to an AE will be reported.

Area Under the Concentration- Time Curve From Time 0 to Last Measurable Concentration (AUC0-last) of MK-0616.
Predose and 1, 1.5, 2, 3, 5, 8, 12, 24, 36, 48, 72, 120, 168, 240, and 336 hours postdose

Blood samples were collected at pre-specified timepoints to determine the AUC0-last of MK-0616. AUC0-last was defined as the area under the concentration-time curve of MK-0616 from time zero to last measurable concentration.

Apparent Clearance (CL/F) of MK-0616
Predose and 1, 1.5, 2, 3, 5, 8, 12, 24, 36, 48, 72, 120, 168, 240, and 336 hours postdose

Blood samples were collected at pre-specified timepoints to determine the CL/F of MK-0616. CL/F was the apparent total clearance of MK-0616 in plasma over time, assessed as the rate at which MK-0616 was removed from the plasma.

Apparent Volume of Distribution (Vz/F) of MK-0616
Predose and 1, 1.5, 2, 3, 5, 8, 12, 24, 36, 48, 72, 120, 168, 240, and 336 hours postdose

Blood samples were collected at pre-specified timepoints to determine the Vz/F of MK-0616. Vz/F was the apparent volume of distribution of MK-0616 between the plasma and the rest of the body, after dose, assessed as the total volume of MK-0616 that would need to be uniformly distributed to achieve the desired plasma drug concentration.

Secondary Endpoints

Number of Participants Who Experience an Adverse Event (AE)
Up to approximately 2 months
Number of Participants Who Discontinue Study Due to an AE
Up to approximately 2 months
Area Under the Curve from Time 0 to 24 Hours (AUC0-24) of Enlicitide Chloride
At designated timepoints (up to approximately 24 hours)
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelCROSSOVER
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Sequence 1: MK-0616 Reference capsule→MK-0616 Formulation 1 (F1)→MK-0616 Formulation 2 (F2)EXPERIMENTALPeriod 1: Participants receive MK-0616 reference capsule single dose on Day 1 orally (Period 1 = 15 days). Period 2: Participants receive MK-0616 F1 single dose on Day 1 orally (Period 2 = 15 days). Period 3: Participants receive MK-0616 F2 single dose on Day 1 orally (Period 3 = 15 days). A washout period of 14 days will separate Period 1, Period 2 and Period 3.
Sequence 2: MK-0616 Reference capsule→MK-0616 F2→MK-0616 F1EXPERIMENTALPeriod 1: Participants receive MK-0616 reference capsule single dose on Day 1 orally (Period 1 = 15 days). Period 2: Participants receive MK-0616 F2 single dose on Day 1 orally (Period 2 = 15 days). Period 3: Participants receive MK-0616 F1 single dose on Day 1 orally (Period 3 = 15 days). A washout period of 14 days will separate Period 1, Period 2 and Period 3.
Sequence 3: MK-0616 F1→MK-0616 Reference capsule→MK-0616 F2EXPERIMENTALPeriod 1: Participants receive MK-0616 F1 single dose on Day 1 orally (Period 1 = 15 days). Period 2: Participants receive MK-0616 reference capsule single dose on Day 1 orally (Period 2 = 15 days). Period 3: Participants receive MK-0616 F2 single dose on Day 1 orally (Period 3 = 15 days). A washout period of 14 days will separate Period 1, Period 2 and Period 3.
Sequence 4: MK-0616 F1→MK-0616 F2→MK-0616 Reference capsuleEXPERIMENTALPeriod 1: Participants receive MK-0616 F1 single dose on Day 1 orally (Period 1 = 15 days). Period 2: Participants receive MK-0616 F2 single dose on Day 1 orally (Period 2 = 15 days). Period 3: Participants receive MK-0616 reference capsule single dose on Day 1 orally (Period 3 = 15 days). A washout period of 14 days will separate Period 1, Period 2 and Period 3.
Sequence 5: MK-0616 F2→MK-0616 Reference capsule →MK-0616 F1EXPERIMENTALPeriod 1: Participants receive MK-0616 F2 single dose on Day 1 orally (Period 1 = 15 days). Period 2: Participants receive MK-0616 reference capsule single dose on Day 1 orally (Period 2 = 15 days). Period 3: Participants receive MK-0616 F1 single dose on Day 1 orally (Period 3 = 15 days). A washout period of 14 days will separate Period 1, Period 2 and Period 3.
Sequence 6: MK-0616 F2→MK-0616 F1→MK-0616 Reference capsuleEXPERIMENTALPeriod 1: Participants receive MK-0616 F2 single dose on Day 1 orally (Period 1 = 15 days). Period 2: Participants receive MK-0616 F1 single dose on Day 1 orally (Period 2 = 15 days). Period 3: Participants receive MK-0616 reference capsule single dose on Day 1 orally (Period 3 = 15 days). A washout period of 14 days will separate Period 1, Period 2 and Period 3.
Enlicitide ChlorideEXPERIMENTALParticipants receive enlicitide chloride titrated orally from Dose 1, Dose 2, or Dose 3 once daily (QD) over the course of a 14-day treatment for each dose based on the safety and tolerability of the previous starting dose. The total treatment duration is up to approximately 6 weeks.
PlaceboPLACEBO_COMPARATORParticipants receive placebo orally for up to approximately 6 weeks.
Panel A - Moderate Renal Impairment (RI)EXPERIMENTALSingle dose of enlicitide chloride 10 mg
Panel B - Healthy ControlsEXPERIMENTALSingle dose of enlicitide chloride 10 mg

Interventions

NameTypeDescription
MK-0616DRUGoral administration
Enlicitide ChlorideBIOLOGICALOral administration
PlaceboOTHEROral administration
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Eligibility Criteria

Age Range18 Years to 50 Years
SexALL
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: The key inclusion criteria include but are not limited to the following: * Is in good health before randomization * Has a body mass index (BMI) ≥18 and ≤32 kg/m\^2, inclusive Exclusion Criteria: The key exclusion criteria include but are not limited to the following: * Has a...

Countries:United States
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Recent Changes (Last 90 Days)

MEDIUMSep 19, 2026NCT05070390TRIAL_REMOVED: changed
MEDIUMSep 19, 2026NCT05070390TRIAL_REMOVED: changed
MEDIUMSep 19, 2026NCT05070390TRIAL_REMOVED: changed

Frequently asked questions about Enlicitide Chloride

What is enlicitide chloride?

Enlicitide chloride is an investigational monoclonal antibody being developed by Merck & Company, Inc. (MRK) for hypercholesterolemia and moderate renal impairment. It is in Phase 1 clinical development and has been studied in placebo-controlled, randomized, double-blind trials. It is not approved for any indication.

What is enlicitide chloride used for?

Enlicitide chloride is being studied for hypercholesterolemia and for use in people with moderate renal impairment. Clinical trials have enrolled healthy participants, participants taking statins, and participants with moderate renal impairment. It remains investigational and has not been approved for any use.

Who makes enlicitide chloride?

Enlicitide chloride is developed by Merck & Company, Inc., which trades under the ticker MRK. Merck is running the clinical program for the drug, including the Phase 1 studies conducted in the United States.

What phase is enlicitide chloride in?

Enlicitide chloride is in Phase 1 clinical development. Its trials are listed as completed, and it is an investigational agent that has not been approved by the FDA. The program has studied the drug in healthy participants, participants taking statins, and participants with moderate renal impairment.

What clinical trials is enlicitide chloride in?

Enlicitide chloride has been evaluated in Phase 1 trials including NCT06655311, which studied it in healthy participants and participants taking statins, and NCT05070390, which studied it in participants with moderate renal impairment. Both trials are completed and were conducted in the United States.

Is enlicitide chloride the same as [¹⁴C]enlicitide chloride?

Yes. [¹⁴C]Enlicitide chloride is an alternative name for enlicitide chloride, referring to the carbon-14 labeled form used in study work. Both names refer to the same Merck (MRK) investigational compound being studied in Phase 1 trials.