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Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of MK-8655 in Participants With Type 2 Diabetes (MK-8655-002)

A Randomized Double-Blind Placebo-Controlled Single and Multiple Dose Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of MK-8655 in Subjects With Type 2 Diabetes

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01640873
Enrollment
33
Registered
2012-07-16
Start date
2012-09-19
Completion date
2012-12-20
Last updated
2018-11-13

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

Conditions

Type 2 Diabetes

Keywords

Type 2 Diabetes

Brief summary

This study will assess the initial safety, tolerability, pharmacokinetics, and pharmacodynamics of MK-8655, after single and multiple daily oral administrations to participants with Type 2 Diabetes (T2DM). The study will assess the reduction in fasting plasma glucose concentrations from baseline after multiple daily administrations of MK-8655.

Interventions

DRUGMK-8655

Participants will receive MK-8655 as a single dose on Day 1. Participants will receive MK-8655, once a day (q.d.), for 14 consecutive days (Day 3 through Day 16). MK-8655 doses may be adjusted downward based on the results of ongoing studies.

DRUGPlacebo

Participants will receive Placebo as a single dose on Day 1. Participants will receive Placebo, q.d., for 14 consecutive days (Day 3 through Day 16).

Sponsors

Merck Sharp & Dohme LLC
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
18 Years to 65 Years
Healthy volunteers
No

Inclusion criteria

* Male or female of non-child bearing potential * Body Mass Index ≤40 kg/m\^2 * Diagnosis of Type 2 Diabetes (T2DM) and is either drug naive or is being treated with metformin only * In good health except for T2DM * Willing to follow a standard diet * Nonsmoker and/or no use of nicotine or nicotine-containing products for 6 months

Exclusion criteria

* Mentally or legally incapacitated * History of stroke, chronic seizures, or major neurological disorder * History of clinically significant endocrine (except T2DM), gastrointestinal, cardiovascular, hematological, hepatic, immunological, renal, respiratory, or genitourinary abnormalities or diseases * History of neoplastic or myeloproliferative diseases * Has clinical unstable or rapidly progressing diabetic retinopathy, neuropathy, and/or frequent nausea, bloating or vomiting, severe gastroesophageal reflux or early satiety * Has a history of Type 1 Diabetes and/or history of ketoacidosis * Use of any lipid-lowering therapies in the past 3 months * Non-permitted medication for a co-morbid condition * Excessive alcohol or caffeine use * Participation in another investigational study within 4 weeks prior to this study * A history of significant multiple and/or severe allergies or anaphylactic reactions * Regular user of any illicit drugs or history of alcohol abuse within 6 months

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With One or More Adverse EventsUp to 14 days after the last dose of study drug (Up to 31 days)An adverse event is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, that occurs during the course of the study.
Number of Participants Discontinuing Study Drug Due to an Adverse EventUp to 17 daysAn adverse event is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, that occurs during the course of the study.
Fasting Plasma Glucose (FPG)Day 16 (Predose)Blood for fasting plasma glucose (central laboratory) was obtained after at least 10 hours overnight fast.

Secondary

MeasureTime frameDescription
True Geometric Mean Plasma Concentrations of MK-8655 After Single and Multiple Drug Doses at 24 Hours Post Dose (C24)24 hours post dose on Days 1, 7, and 14C24hr was log transformed and analyzed based on a linear mixed effects model containing fixed effects for treatment, day and treatment by day interaction and a random effect for the participant.
24-Hour Weighted Mean Glucose (WMG)Day 15: Predose, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 18, 21, 23 hours post-dose.The WMG provides an integrated assessment of the glycemic exposure over the 24-hour period. To reduce variability of the baseline (before any study drug administration) WMG, participants were domiciled in the test facility at least 36 hours prior to Day 1, where standard meals were provided, and physical activity was monitored. The WMG was derived from multiple glucose values collected during both fasting and post-meal periods. The sample scheme for the 18 point glucose measurements used in this study had many samples taken in the very early morning hours, as well as the first three hours after meals. WMG was calculated as the area under the curve (AUC) of the glucose concentrations divided by the duration of time of samples collected.
Change From Baseline at 2 Hours Oral Glucose Tolerance TestBaseline and 2 hours after dosing on Days 1, 3, and 16Plasma glucose excursion was assessed during an oral glucose tolerance test (oGTT) following a single dose administration of MK-8655 in participants with T2DM.

Participant flow

Recruitment details

Participant was a male or female (of non-child bearing potential) between 18 to 65 years of age with a diagnosis of Type 2 diabetes mellitus (T2DM) and was either drug naïve or was being treated with metformin only.

Participants by arm

ArmCount
MK-8655 80 mg/MK-8655 320 mg
Participants received a single dose of MK-8655, 80 mg on Day 1 and then MK-8655 320 mg, once daily, starting on Day 3 for 14 consecutive days.
22
Placebo
Participants received a single dose of placebo to MK-8655, 80 mg on Day 1 and then placebo to MK-8655 320 mg, once daily, starting on Day 3 for 14 consecutive days.
11
Total33

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyProtocol Violation21

Baseline characteristics

CharacteristicMK-8655 80 mg/MK-8655 320 mgPlaceboTotal
Age, Customized
31 to 63 years
22 Participants11 Participants33 Participants
Sex: Female, Male
Female
11 Participants4 Participants15 Participants
Sex: Female, Male
Male
11 Participants7 Participants18 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 220 / 11
other
Total, other adverse events
11 / 227 / 11
serious
Total, serious adverse events
0 / 220 / 11

Outcome results

Primary

Fasting Plasma Glucose (FPG)

Blood for fasting plasma glucose (central laboratory) was obtained after at least 10 hours overnight fast.

Time frame: Day 16 (Predose)

Population: The analysis population was participants who complied with the protocol sufficiently to ensure that these data would likely exhibit the effects of treatment, according to the underlying scientific model. Compliance covered such considerations as exposure to treatment, availability of measurements and absence of major protocol violations.

ArmMeasureValue (MEAN)Dispersion
MK-8655 80 mg/MK-8655 320 mgFasting Plasma Glucose (FPG)195.5 mg/dLStandard Deviation 52.5
PlaceboFasting Plasma Glucose (FPG)211.8 mg/dLStandard Deviation 70.2
p-value: 0.35690% CI: [-47.4, 30.4]Constrained longitudinal data analysis
Primary

Number of Participants Discontinuing Study Drug Due to an Adverse Event

An adverse event is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, that occurs during the course of the study.

Time frame: Up to 17 days

Population: All participants who received at least one dose of the investigational drug.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
MK-8655 80 mg/MK-8655 320 mgNumber of Participants Discontinuing Study Drug Due to an Adverse Event0 Participants
PlaceboNumber of Participants Discontinuing Study Drug Due to an Adverse Event0 Participants
Primary

Number of Participants With One or More Adverse Events

An adverse event is defined as any unfavorable and unintended sign including an abnormal laboratory finding, symptom or disease associated with the use of a medical treatment or procedure, regardless of whether it is considered related to the medical treatment or procedure, that occurs during the course of the study.

Time frame: Up to 14 days after the last dose of study drug (Up to 31 days)

Population: All participants who received at least one dose of the investigational drug.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
MK-8655 80 mg/MK-8655 320 mgNumber of Participants With One or More Adverse Events11 Participants
PlaceboNumber of Participants With One or More Adverse Events7 Participants
Secondary

24-Hour Weighted Mean Glucose (WMG)

The WMG provides an integrated assessment of the glycemic exposure over the 24-hour period. To reduce variability of the baseline (before any study drug administration) WMG, participants were domiciled in the test facility at least 36 hours prior to Day 1, where standard meals were provided, and physical activity was monitored. The WMG was derived from multiple glucose values collected during both fasting and post-meal periods. The sample scheme for the 18 point glucose measurements used in this study had many samples taken in the very early morning hours, as well as the first three hours after meals. WMG was calculated as the area under the curve (AUC) of the glucose concentrations divided by the duration of time of samples collected.

Time frame: Day 15: Predose, 2, 3, 4, 5, 6, 7, 8, 9, 11, 12, 13, 14, 15, 16, 18, 21, 23 hours post-dose.

Population: The analysis population was participants who complied with the protocol sufficiently to ensure that these data would likely exhibit the effects of treatment, according to the underlying scientific model. Compliance covered such considerations as exposure to treatment, availability of measurements and absence of major protocol violations.

ArmMeasureValue (MEAN)Dispersion
MK-8655 80 mg/MK-8655 320 mg24-Hour Weighted Mean Glucose (WMG)205.5 mg/dLStandard Deviation 33.95
Placebo24-Hour Weighted Mean Glucose (WMG)199.9 mg/dLStandard Deviation 78.81
p-value: 0.271490% CI: [0.92, 1.19]Constrained longitudinal data analysis
Secondary

Change From Baseline at 2 Hours Oral Glucose Tolerance Test

Plasma glucose excursion was assessed during an oral glucose tolerance test (oGTT) following a single dose administration of MK-8655 in participants with T2DM.

Time frame: Baseline and 2 hours after dosing on Days 1, 3, and 16

Population: The analysis population was participants who complied with the protocol sufficiently to ensure that these data would likely exhibit the effects of treatment, according to the underlying scientific model. Compliance covered such considerations as exposure to treatment, availability of measurements and absence of major protocol violations.

ArmMeasureGroupValue (MEAN)Dispersion
MK-8655 80 mg/MK-8655 320 mgChange From Baseline at 2 Hours Oral Glucose Tolerance TestDay 1164.0 mg/dLStandard Deviation 41.4
MK-8655 80 mg/MK-8655 320 mgChange From Baseline at 2 Hours Oral Glucose Tolerance TestDay 3162.3 mg/dLStandard Deviation 37
MK-8655 80 mg/MK-8655 320 mgChange From Baseline at 2 Hours Oral Glucose Tolerance TestDay 16172.4 mg/dLStandard Deviation 39.2
PlaceboChange From Baseline at 2 Hours Oral Glucose Tolerance TestDay 1134.7 mg/dLStandard Deviation 74.5
PlaceboChange From Baseline at 2 Hours Oral Glucose Tolerance TestDay 3135.0 mg/dLStandard Deviation 74.1
PlaceboChange From Baseline at 2 Hours Oral Glucose Tolerance TestDay 16156.1 mg/dLStandard Deviation 79.4
p-value: 0.0695% CI: [0.99, 1.55]ANOVA
p-value: 0.06595% CI: [0.98, 1.47]ANOVA
p-value: 0.21795% CI: [0.89, 1.37]ANOVA
Secondary

True Geometric Mean Plasma Concentrations of MK-8655 After Single and Multiple Drug Doses at 24 Hours Post Dose (C24)

C24hr was log transformed and analyzed based on a linear mixed effects model containing fixed effects for treatment, day and treatment by day interaction and a random effect for the participant.

Time frame: 24 hours post dose on Days 1, 7, and 14

Population: The analysis population was participants who complied with the protocol sufficiently to ensure that these data would likely exhibit the effects of treatment, according to the underlying scientific model. No pharmacokinetic analysis for C24 was performed for participants receiving placebo.

ArmMeasureGroupValue (GEOMETRIC_MEAN)Dispersion
MK-8655 80 mg/MK-8655 320 mgTrue Geometric Mean Plasma Concentrations of MK-8655 After Single and Multiple Drug Doses at 24 Hours Post Dose (C24)Day 1, MK-8655 80 mg, single dose0.133 uMGeometric Coefficient of Variation 68.2
MK-8655 80 mg/MK-8655 320 mgTrue Geometric Mean Plasma Concentrations of MK-8655 After Single and Multiple Drug Doses at 24 Hours Post Dose (C24)Day 1, MK-8655 320 mg, multiple doses0.477 uMGeometric Coefficient of Variation 72.1
MK-8655 80 mg/MK-8655 320 mgTrue Geometric Mean Plasma Concentrations of MK-8655 After Single and Multiple Drug Doses at 24 Hours Post Dose (C24)Day 7, MK-8655 320 mg, multiple doses0.549 uMGeometric Coefficient of Variation 66.9
MK-8655 80 mg/MK-8655 320 mgTrue Geometric Mean Plasma Concentrations of MK-8655 After Single and Multiple Drug Doses at 24 Hours Post Dose (C24)Day 14, MK-8655 320 mg, multiple doses0.612 uMGeometric Coefficient of Variation 69.4

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026