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MK-0616

Phase 3

Hypercholesterolemia | Small molecule | Metabolic |Merck & Company, Inc.|Trials Updated: Oct 7, 2026

MK-0616 development status

Highest phase Phase 3 (NCT07216482)
Phase scored for MRKPhase 1
Registered trials 34 across 1 sponsor since Oct 2021

MK-0616 target and mechanism

Molecular targetPCSK9
Target classProtein
ModalitySmall molecule

Also known as Enlicitide, Enlicitide Decanoate, Enlicitide Chloride, [¹⁴C]Enlicitide chloride, Enclitide Chloride

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLED
Total Trials14
Total Enrollment22,897

FDA Designations

No designations recorded

MK-0616 clinical trials

MK-0616 · 14 trials · 10 indications

Phase 3 7Phase 2 2Phase 1 5
NCT07821944A Clinical Study of Enlicitide (MK-0616) in Adults With Hyperlipidemia in India (MK-0616-038)Hyperlipidemia
NOT YET_RECRUITING150 Analytics
NCT07216482A Clinical Study of Enlicitide in Participants With High Cholesterol (MK-0616-037)Hyperlipidemia
ACTIVE NOT_RECRUITING996 Analytics
NCT06492291Open-label Extension Study of Enlicitide Decanoate (MK-0616/Enlicitide Oral PCSK9 Inhibitor) in Adults With Hypercholesterolemia (MK-0616-019) CORALreef ExtensionHypercholesterolemia
ACTIVE NOT_RECRUITING3,000 Analytics
NCT06450366A Study to Evaluate the Efficacy and Safety of Enlicitide (MK-0616, Oral PCSK9 Inhibitor) Compared With Ezetimibe or Bempedoic Acid or Ezetimibe and Bempedoic Acid in Adults With Hypercholesterolemia (MK-0616-018/CORALreef AddOn)Hypercholesterolemia
COMPLETED301 Analytics
NCT06008756Enlicitide Decanoate (MK-0616 Oral PCSK9 Inhibitor) Cardiovascular Outcomes Study (MK-0616-015) CORALreef OutcomesArteriosclerosis
ACTIVE NOT_RECRUITING14,550 Analytics
NCT05952856A Study of Enlicitide Decanoate (MK-0616 Oral PCSK9 Inhibitor) in Adults With Hypercholesterolemia (MK-0616-013) CORALreef LipidsHypercholesterolemia
COMPLETED2,912 Analytics
NCT05952869A Study of Enlicitide Decanoate (MK-0616 Oral PCSK9 Inhibitor) in Adults With Heterozygous Familial Hypercholesterolemia (MK-0616-017/CORALreef HeFH)Hypercholesterolemia
COMPLETED303 Analytics
PHASE3NOT YET_RECRUITING
A Clinical Study of Enlicitide (MK-0616) in Adults With Hyperlipidemia in India (MK-0616-038)
HyperlipidemiaUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
A Clinical Study of Enlicitide in Participants With High Cholesterol (MK-0616-037)
HyperlipidemiaUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Open-label Extension Study of Enlicitide Decanoate (MK-0616/Enlicitide Oral PCSK9 Inhibitor) in Adults With Hypercholesterolemia (MK-0616-019) CORALreef Extension
HypercholesterolemiaUnlock trial analytics
PHASE3COMPLETED
A Study to Evaluate the Efficacy and Safety of Enlicitide (MK-0616, Oral PCSK9 Inhibitor) Compared With Ezetimibe or Bempedoic Acid or Ezetimibe and Bempedoic Acid in Adults With Hypercholesterolemia (MK-0616-018/CORALreef AddOn)
HypercholesterolemiaUnlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Enlicitide Decanoate (MK-0616 Oral PCSK9 Inhibitor) Cardiovascular Outcomes Study (MK-0616-015) CORALreef Outcomes
ArteriosclerosisUnlock trial analytics
PHASE3COMPLETED
A Study of Enlicitide Decanoate (MK-0616 Oral PCSK9 Inhibitor) in Adults With Hypercholesterolemia (MK-0616-013) CORALreef Lipids
HypercholesterolemiaUnlock trial analytics
PHASE3COMPLETED
A Study of Enlicitide Decanoate (MK-0616 Oral PCSK9 Inhibitor) in Adults With Heterozygous Familial Hypercholesterolemia (MK-0616-017/CORALreef HeFH)
HypercholesterolemiaUnlock trial analytics

Study Endpoints

Primary Endpoints

Mean Percent Change From Baseline in Low-density Lipoprotein Cholesterol (LDL-C) at Week 24
Baseline and Week 24

Blood samples will be collected at baseline and at Week 24 to assess mean percent change in LDL-C.

Number of Participants with One or More Adverse Events (AEs)
Up to approximately 32 Weeks

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.

Number of Participants who Discontinue Study Drug Due to One or More AEs
Up to approximately 24 Weeks

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.

Mean Percent Change from Baseline in LDL-C at Week 8 (Enlicitide + Rosuvastatin Versus Placebo)
Baseline and Week 8

Blood samples will be collected at baseline and at Week 8 to assess mean percent change in LDL-C between participants treated with enlicitide and rosuvastatin versus placebo.

Number of participants who discontinue study drug due to an AE
Up to approximately 3 years

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.

Mean Percent Change From Baseline in Low-density Lipoprotein Cholesterol (LDL-C) at Day 56
Baseline and Day 56

Blood samples were collected at baseline and after 56 days of treatment to assess mean percentage change in LDL-C. The mean percent change from baseline in LDL-C at Day-56 is reported.

Blinded Period: Time to First Occurrence of Coronary Heart Disease (CHD) Death-Based Major Adverse Cardiovascular Events (MACE)-Plus
From date of randomization until the date of first occurrence of CHD death-based MACE-plus, assessed up to approximately 6 years

Time to the first occurrence of CHD death-based MACE-plus, which is defined as any of the following: coronary heart disease death, myocardial infarction (MI), ischemic stroke (fatal and nonfatal), acute limb ischemia or major amputation, or urgent arterial revascularization (coronary, cerebrovascular, or peripheral).

Number of Participants Who Discontinued Study Drug Due to an AE
Up to 52 weeks

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.

Number of Participants With Adverse Events (AEs)
Up to 64 weeks (8 weeks postdose)

An AE was defined as 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.

Part A: Maximum Plasma Concentration (Cmax) of Enlicitide
At designated timepoints (up to 24 hours postdose on day 14)

Blood samples will be collected to determine the Cmax of enlicitide.

Part A: Area Under the Concentration-Time Curve from 0 to 24 Hours (AUC0-24) of Enlicitide
At designated timepoints (up to 24 hours postdose on day 14)

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

Part B: Percent Change from Baseline in Low-Density Lipoprotein Cholesterol (LDL-C)
Baseline and Week 24

Blood samples will be collected to determine the percent change from baseline in LDL-C.

Number of Participants Who Experience an Adverse Event (AE)
Up to approximately 188 weeks

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.

Number of Participants Who Discontinue Study Treatment Due to an AE
Up to approximately 180 weeks

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.

Percent Change From Baseline in Low-density Lipoprotein Cholesterol (LDL-C) at Week 8
Baseline and up to Week 8

Blood samples were collected at baseline and after 8 weeks of treatment to assess mean percent change in LDL-C. Based on a constrained longitudinal analysis (cLDA) model including terms for treatment, time, baseline statin intensity, baseline renal function, and the interaction of treatment by time. The percent change from baseline in LDL-C at week 8 was reported.

Percentage of Participants Who Experienced One or More Adverse Events (AEs)
Up to approximately 17 Weeks

An AE was 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 could 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 percentage of participants who experienced at least one AE was reported.

Percentage of Participants Who Discontinued Study Intervention Due to AEs
Up to approximately 9 Weeks

An AE was 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 could 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 percentage of participants who discontinued study intervention due to AEs was reported.

Area Under the Concentration Versus Time Curve From Time 0 to Infinity (AUC0-inf) of Enlicitide
Predose and 0.5, 1, 1.5, 2, 3, 5, 8, 12, 24, 36, 48, 72, 120, and 168 hours postdose

Blood samples were collected at pre-specified time points to determine the AUC0-inf of enlicitide in plasma. AUC0-inf was defined as AUC0-last + (Cest,last/λz) where Cest, last was the estimated last measurable concentration, and λz was the apparent first-order terminal elimination rate constant.

Maximum Concentration (Cmax) of Enlicitide
Predose and 0.5, 1, 1.5, 2, 3, 5, 8, 12, 24, 36, 48, 72, 120, and 168 hours postdose

Blood samples were collected at pre-specified time points to determine the Cmax of enlicitide in participant's plasma. Cmax was defined as the maximum observed concentration of enlicitide in plasma after the administration of a given dose.

Area Under the Concentration-Time Curve From Time 0 to Infinity (AUC0-Inf) of Enlicitide Decanoate
Predose and 0.5, 1, 1.5, 2, 4, 8, 12, 24, 36, 48, 72, 120, 168, and 240 hours postdose

AUC0-inf was a measure of the total amount of drug in the plasma from the dose administration extrapolated to infinity. Blood for plasma samples was collected at pre-specified timepoints to determine the AUC0-inf of enlicitide decanoate for Panel A, B, C, and D participants. Per protocol, Panel C ESRD on HD arm was separated into two arms: Panel C ESRD - enlicitide decanoate pre-hemodialysis and Panel C ESRD - enlicitide decanoate post-hemodialysis to report AUC0-inf. Per protocol, mean AUC0-inf was reported.

AUC From Time 0 to Last Measurable Concentration (AUClast) of Enlicitide Decanoate
Predose and 0.5, 1, 1.5, 2, 4, 8, 12, 24, 36, 48, 72, 120, 168, and 240 hours postdose

AUClast was defined as the area under the concentration-time curve of enlicitide decanoate from time zero to last measurable concentration. Blood for plasma samples was collected at pre-specified timepoints to determine the AUClast of enlicitide decanoate in Panel A, B, C, and D participants. Per protocol, Panel C ESRD on HD arm was separated into two arms: Panel C ESRD - enlicitide decanoate pre-hemodialysis and Panel C ESRD - enlicitide decanoate post-hemodialysis to report AUClast. Per protocol, mean AUClast was reported.

Maximum Plasma Concentration (Cmax) of Enlicitide Decanoate
Predose and 0.5, 1, 1.5, 2, 4, 8, 12, 24, 36, 48, 72, 120, 168, and 240 hours postdose

Cmax was defined as the maximum or peak concentration of enlicitide decanoate observed after its administration. Blood for plasma samples was collected at pre-specified time points to determine the Cmax of enlicitide decanoate in Panel A, B, C and D participants. Per protocol, Panel C ESRD on HD arm was separated into two arms: Panel C enlicitide decanoate pre-hemodialysis and Panel C enlicitide decanoate post-hemodialysis to report Cmax. Per protocol, mean Cmax was reported.

Time to Maximum Plasma Concentration (Tmax) of Enlicitide Decanoate
Predose and 0.5, 1, 1.5, 2, 4, 8, 12, 24, 36, 48, 72, 120, 168, and 240 hours postdose

Tmax was defined as the time required for a study drug to reach maximum concentration in plasma. Blood for plasma samples was collected at pre-specified time points to determine the Tmax of enlicitide decanoate in Panel A, B, C and D participants. Per protocol, Panel C ESRD on HD arm was separated into two arms: Panel C enlicitide decanoate pre-hemodialysis and Panel C enlicitide decanoate post-hemodialysis to report Tmax. Per protocol, mean Tmax was reported.

Apparent Terminal Half-life (t1/2) of Enlicitide Decanoate
Predose and 0.5, 1, 1.5, 2, 4, 8, 12, 24, 36, 48, 72, 120, 168, and 240 hours postdose

Half-life (t1/2) was defined as the time required for plasma drug concentration of enclitide decanoate to decrease by 50% from peak. Blood for plasma samples was collected at pre-specified time points to determine the t1/2 of enlicitide decanoate in Panel A, B, C and D participants. Per protocol, Panel C ESRD on HD arm was separated into two arms: Panel C enlicitide decanoate pre-hemodialysis and Panel C enlicitide decanoate post-hemodialysis to report t1/2. Per protocol, mean t1/2 was reported.

Apparent Clearance (CL/F) of Enlicitide Decanoate
Predose and 0.5, 1, 1.5, 2, 4, 8, 12, 24, 36, 48, 72, 120, 168, and 240 hours postdose

CL/F was the apparent total clearance of enlicitide decanoate in plasma over time. Blood for plasma samples was collected at pre-specified timepoints to determine the CL/F of enlicitide decanoate for Panel A, B, C, and D participants. Per protocol, Panel C ESRD on HD arm was separated into two arms: Panel C enlicitide decanoate pre-hemodialysis and Panel C enlicitide decanoate post-hemodialysis to report CL/F. Per protocol, mean CL/F was reported.

Apparent Volume of Distribution (Vz/F) of Enlicitide Decanoate
Predose and 0.5, 1, 1.5, 2, 4, 8, 12, 24, 36, 48, 72, 120, 168, and 240 hours postdose

Vz/F was the apparent volume of distribution of enlicitide decanoate between the plasma and the rest of the body, after dose, assessed as the total volume of enlicitide decanoate that would need to be uniformly distributed to achieve the desired plasma drug concentration. Blood for plasma samples was collected at pre-specified time points to determine the Vz/F of Enlicitide Decanoate in Panel A, B, C, and D participants. Per protocol, Panel C ESRD on HD arm was separated into two arms: Panel C enlicitide decanoate pre-hemodialysis and Panel C enlicitide decanoate post-hemodialysis to report Vz/F. Per protocol, mean Vz/F was reported.

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.

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

Mean Percent Change From Baseline in Non High-Density Lipoprotein Cholesterol (Non-HDL-C) at Week 24
Baseline and Week 24
Mean Percent Change From Baseline in Apolipoprotein B (ApoB) at Week 24
Baseline and Week 24
Percent Change From Baseline in Lipoprotein (a) (Lp(a)) at Week 24
Baseline and Week 24
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Enlicitide DecanoateEXPERIMENTALParticipants will receive 20 mg enlicitide decanoate orally once daily (qd) for up to 24 weeks.
PlaceboOTHERParticipants will receive placebo orally qd for up to 24 weeks.
EnlicitideEXPERIMENTALParticipants will receive enlicitide and a rosuvastatin-matching placebo. Both will be delivered orally once daily (QD) for up to 12 weeks.
Enlicitide + RosuvastatinEXPERIMENTALParticipants will receive enlicitide and rosuvastatin. Both will be delivered orally QD for up to 12 weeks.
RosuvastatinACTIVE_COMPARATORParticipants will receive rosuvastatin and an enlicitide-matching placebo. Both will be delivered orally QD for up to 12 weeks.
EzetimibeACTIVE_COMPARATORParticipants receive ezetimibe 10mg, enlicitide-matching placebo, and bempedoic acid-matching placebo QD orally up to approximately 56 days.
Bempedoic AcidACTIVE_COMPARATORParticipants receive bempedoic acid 180mg, ezetimibe-matching placebo, and enlicitide-matching placebo QD orally up to approximately 56 days.
Ezetimibe + Bempedoic AcidACTIVE_COMPARATORParticipants receive ezetimibe 10 mg, bempedoic acid 180mg, enlicitide-matching placebo orally QD for approximately 56 days.
Blinded Portion: Enlicitide DecanoateEXPERIMENTALParticipants receive enlicitide decanoate 20 mg once daily.
Blinded Portion: PlaceboPLACEBO_COMPARATORParticipants receive placebo once daily.
Open-Label Extension: Enlicitide DecanoateEXPERIMENTALParticipants who complete the blinded portion may enroll in this open-label extension arm. Participants in the extension arm receive enlicitide decanoate once daily up to 2 years.
Part A: Enlicitide DecanoateEXPERIMENTALParticipants receive enlicitide decanoate orally once daily (QD) at a dosage determined by age for up to 2 weeks.
Part B: Enlicitide DecanoateEXPERIMENTALParticipants receive enlicitide decanoate QD at a dosage determined by age for up to 24 weeks.
Part B: PlaceboPLACEBO_COMPARATORParticipants receive placebo orally QD for up to 24 weeks.
Enclitide Chloride 6 mgEXPERIMENTALParticipants will receive 6 mg of enlicitide chloride orally QD for 8 weeks
Enclitide Chloride 12 mgEXPERIMENTALParticipants will receive 12 mg of enlicitide chloride orally QD for 8 weeks
Enclitide Chloride 18 mgEXPERIMENTALParticipants will receive 18 mg of enlicitide chloride orally QD for 8 weeks
Enclitide Chloride 30 mgEXPERIMENTALParticipants will receive 30 mg of enlicitide chloride orally QD for 8 weeks
Moderate Hepatic Impairment (HI)EXPERIMENTALParticipants will receive a single oral dose of enlicitide on Day 1
Healthy ControlsEXPERIMENTALParticipants will receive a single oral dose of enlicitide on Day 1
Mild HIEXPERIMENTALParticipants will receive a single oral dose of enlicitide on Day 1
Panel A: Moderate Renal Impairment (RI)EXPERIMENTALParticipants receive Enlicitide Decanoate 20 mg tablet single dose orally on Day 1
Panel B: Severe RIEXPERIMENTALParticipants receive Enlicitide Decanoate 20 mg tablet single dose orally on Day 1
Panel C: End-Stage Renal Disease (ESRD) on Hemodialysis (HD)EXPERIMENTALParticipants receive Enlicitide Decanoate 20 mg tablet orally on Day 1 and Day 16.
Panel D: Healthy ControlsEXPERIMENTALParticipants receive Enlicitide Decanoate 20 mg tablet single dose orally on Day 1.
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.
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
Enlicitide DecanoateDRUGOral administration
PlaceboOTHEROral administration
EnlicitideDRUGOral Tablet
RosuvastatinDRUGOral Capsule
Placebo for EnlicitideDRUGOral Tablet
Placebo for RosuvastatinDRUGOral Capsule
EzetimibeDRUGOral tablet
Bempedoic AcidDRUGOral capsule
Placebo for EzetimibeOTHERezetimibe-matching placebo oral tablet
Placebo for Bempedoic AcidOTHERbempedoic acid-matching placebo oral capsule
Enclitide ChlorideDRUGEnclitide Chloride administered orally
MK-0616DRUGoral administration
Enlicitide ChlorideBIOLOGICALOral administration
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo

Inclusion Criteria: The main inclusion criteria include but are not limited to the following: * History of a major atherosclerotic cardiovascular disease (ASCVD) event or if no history of a major ASCVD event, has one or more of the following: possible or definite diagnosis of heterozygous familial...

Countries:United StatesArgentinaAustraliaBrazilCanadaHungaryIsraelNew ZealandSpainTurkey (Türkiye)United KingdomChileChinaColombiaCzechiaFinlandFranceGermanyHong KongItalyJapanMexicoNetherlandsNorwaySingaporeSouth AfricaSouth KoreaTaiwanDenmarkPeruPolandPuerto RicoBelgium
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Recent Changes (Last 90 Days)

LOWOct 7, 2026NCT07058077lastUpdatePostDate: changed
LOWOct 7, 2026NCT07058077lastUpdatePostDate: changed
LOWSep 28, 2026NCT07058077lastUpdatePostDate: changed
LOWSep 28, 2026NCT07058077lastUpdatePostDate: changed
LOWSep 21, 2026NCT07058077lastUpdatePostDate: changed
LOWSep 21, 2026NCT07058077lastUpdatePostDate: changed
MEDIUMSep 19, 2026NCT05070390TRIAL_REMOVED: changed
MEDIUMSep 19, 2026NCT05070390TRIAL_REMOVED: changed
MEDIUMSep 19, 2026NCT05070390TRIAL_REMOVED: changed
LOWSep 16, 2026NCT07821944NEW_TRIAL: changed
LOWSep 16, 2026NCT07821944NEW_TRIAL: changed
LOWSep 15, 2026NCT07058077lastUpdatePostDate: changed
LOWSep 15, 2026NCT07058077lastUpdatePostDate: changed
LOWSep 15, 2026NCT07058077lastUpdatePostDate: changed
MEDIUMSep 6, 2026NCT05952856TRIAL_REMOVED: changed
MEDIUMSep 6, 2026NCT05952856TRIAL_REMOVED: changed

Frequently asked questions about MK-0616

What is MK-0616 used for?

MK-0616 is an investigational oral small molecule being developed by Merck for hypercholesterolemia, meaning elevated cholesterol levels. It is designed as a cholesterol-lowering therapy and is currently in Phase 1 clinical development. It has not been approved by the FDA for any indication.

What does MK-0616 target?

MK-0616 targets PCSK9, a protein involved in regulating cholesterol levels in the blood. By binding to PCSK9, the drug is intended to reduce LDL cholesterol. It is a small molecule, distinguishing it from the injectable PCSK9 inhibitors currently used to treat hypercholesterolemia.

Who is developing MK-0616?

MK-0616 is being developed by Merck & Company, Inc., which trades on the New York Stock Exchange under the ticker MRK. Merck is running the clinical program for the drug, including the Phase 1 study conducted in the United States.

What phase is MK-0616 in?

MK-0616 is in Phase 1 clinical development. One Phase 1 trial has been completed, and no active trials are currently listed. The drug remains investigational and has not received FDA approval for hypercholesterolemia or any other indication.

What clinical trials is MK-0616 in?

MK-0616 has been studied in one completed Phase 1 trial, NCT06592339, titled A Study of MK-0616 in Healthy Adult Participants (MK-0616-009). The trial enrolled 24 healthy adult volunteers in the United States, was randomized and controlled, and included participants aged 18 years and older of all sexes.