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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)

A Phase 3, Randomized, Double-Blind Study to Evaluate the Efficacy and Safety of MK-0616 Compared With Ezetimibe or Bempedoic Acid or Ezetimibe and Bempedoic Acid in Adults With Hypercholesterolemia

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06450366
Enrollment
301
Registered
2024-06-10
Start date
2024-07-08
Completion date
2025-03-28
Last updated
2026-03-27

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Hypercholesterolemia

Brief summary

The main purpose of this study is to assess whether enlicitide is superior to ezetimibe or bempedoic acid or ezetimibe + bempedoic acid in reducing low-density lipoprotein cholesterol (LDL-C) in participants with hypercholesterolemia, and to evaluate its safety and tolerability. The primary study hypotheses are enlicitide is superior to ezetimibe, bempedoic acid, and ezetimibe + bempedoic acid on mean percent change from baseline in LDL-C at week 8.

Interventions

Oral tablet

DRUGEzetimibe

Oral tablet

DRUGBempedoic Acid

Oral capsule

enlicitide-matching placebo oral tablet

ezetimibe-matching placebo oral tablet

bempedoic acid-matching placebo oral capsule

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
TRIPLE (Subject, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Has either a) history of a major atherosclerotic cardiovascular disease (ASCVD) event or b) if no history of a major ASCVD event, has intermediate to high risk for development of a first major ASCVD event * Has fasted lipid values (evaluated by the central laboratory) at Visit 1 (Screening) as follows: a) history of a major ASCVD event with LDL-C ≥55 mg/dL (≥1.42 mmol/L) OR b) No history of a major ASCVD event with low-density lipoprotein cholesterol (LDL-C) ≥70 mg/dL (≥1.81 mmol/L) * Is treated with a low, moderate, or high intensity statin (±non-statin lipid lowering therapy \[LLT\]) * Is on a stable dose of all background LLTs with no planned medication or dose changes during the study * Is an individual of any sex/gender, from 18 years of age inclusive, at the time of providing the informed consent

Exclusion criteria

* Has a history of homozygous familial hypercholesterolemia (FH) based on genetic or clinical criteria, compound heterozygous familial hypercholesterolemia (HeFH), or double HeFH * Has New York Heart Association class IV heart failure, or last known left ventricular ejection fraction ≤25% by any imaging method, or had a heart failure hospitalization within 3 months before Visit 1 (Screening) * Participants with a history of tendon disorder or tendon rupture * Participants with a history of gout * Is undergoing or previously underwent an LDL-C apheresis program within 3 months before Visit 1 (Screening) or plans to initiate an LDL-C apheresis program * Was previously treated/is being treated with certain other cholesterol lowering medications, including ezetimibe, bempedoic acid, or protein convertase subtilisin/kexin type 9 (PCSK9) inhibitors without adequate washout

Design outcomes

Primary

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

Secondary

MeasureTime frameDescription
Mean Percent Change From Baseline in Apolipoprotein B (ApoB) at Day 56Baseline and Day 56Blood samples were collected at baseline and on day 56 of treatment to assess mean percent change in ApoB. The mean percent change from baseline in ApoB at Day 56 is reported.
Mean Percent Change From Baseline in Non-High-density Lipoprotein Cholesterol (Non-HDL-C) at Day 56Baseline and Day 56Blood samples were collected at baseline and on day 56 of treatment to assess mean percent change in non-HDL-C. The mean percent change from baseline in non-HDL-C at 56 days is reported.
Median Percent Change From Baseline in Lipoprotein(a) Levels (Lp[a])Baseline and Day 56Blood samples were collected at baseline and on day 56 of treatment to assess median percent change in Lp(a) levels. The median percent change from baseline at Day 56 is reported.
Percentage of Participants Who at Day 56 Have an LDL-C <70 mg/dL and ≥50% Reduction From BaselineBaseline and Day 56Blood samples were collected at baseline and after 56 days of treatment to assess the percentage of participants who have an LDL-C \<70 mg/dL and ≥50% reduction from baseline at day 56. The percentage of participants who have LDL-C \<70 mg/dL and ≥50% reduction from baseline is reported.
Percentage of Participants Who at Day 56 Have an LDL-C <55 mg/dL and ≥50% Reduction From BaselineBaseline and Day 56Blood samples were collected at baseline and after 56 days of treatment to assess the percentage of participants who have an LDL-C \<55 mg/dL and ≥50% reduction from baseline at day 56. The percentage of participants who have LDL-C \<55 mg/dL and ≥50% reduction from baseline is reported.
Percentage of Participants With ≥1 Adverse Event (AE)Up to approximately 147 daysAn 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 have been 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 an AE is reported.
Percentage of Participants Discontinuing From Study Intervention Due to AEUp to approximately 91 daysAn 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 have been 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 an AE is reported.

Countries

Argentina, Canada, France, Israel, Spain, Taiwan, United Kingdom, United States

Contacts

STUDY_DIRECTORMedical Director

Merck Sharp & Dohme LLC

Participant flow

Pre-assignment details

301 participants were randomized in 2:1:1:2 ratio to receive enlicitide, ezetimibe, bempedoic acid, or ezetimibe + bempedoic acid.

Baseline characteristics

Characteristic
Age, Continuous65.4 Years
STANDARD_DEVIATION 10.2
Ethnicity (NIH/OMB)
Hispanic or Latino
18 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
38 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Mean low-density lipoprotein cholesterol (LDL-C) at Baseline93.2 mg/dL
STANDARD_DEVIATION 27.4
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
80 Participants
Race (NIH/OMB)
Black or African American
5 Participants
Race (NIH/OMB)
More than one race
1 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
198 Participants
Renal Function measured by estimated Glomerular Filtration Rate (eGFR)
≥35 to <45
5 Participants
Renal Function measured by estimated Glomerular Filtration Rate (eGFR)
≥45 to <60
7 Participants
Renal Function measured by estimated Glomerular Filtration Rate (eGFR)
≥60
273 Participants
Sex: Female, Male
Female
112 Participants
Sex: Female, Male
Male
189 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 1010 / 500 / 500 / 100
other
Total, other adverse events
0 / 1013 / 503 / 500 / 100
serious
Total, serious adverse events
0 / 1014 / 501 / 500 / 100

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 28, 2026