CClinicalTrials.gg
CompletedNCT01640873Updated Nov 13, 2018Results posted

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

A Phase 1 interventional study of MK-8655 and Placebo in Type 2 Diabetes, sponsored by Merck Sharp & Dohme LLC. Completed. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2018-11-13.

Sponsored by Merck Sharp & Dohme LLC · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
33
Allocation
Randomized
Ages
18 Years to 65 Years
Sex
All
01

Study 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.

02

Conditions studied

  • Type 2 Diabetes

Keywords

  • Type 2 Diabetes
03

In context

Diabetes Mellitus

10,925 studies on the registry are indexed under Diabetes Mellitus; 1,319 are open to participants now.

This study's enrollment of 33 is below the median of 80 across 8,367 interventional studies indexed under Diabetes Mellitus.

Browse Diabetes Mellitus studies →

Lead sponsor

Merck Sharp & Dohme LLC is the lead sponsor of 2,114 studies on the registry; 133 are open to participants now.

Of its 489 completed or terminated interventional studies of FDA-regulated products, 362 (74%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts 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

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
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
33 participants (actual)

Study arms

  • Experimental
    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.

    Drug: MK-8655

  • Placebo comparator
    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.

    Drug: Placebo

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).

06

What researchers measure

Primary outcomes

  1. 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)

  2. 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

  3. 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)

Secondary outcomes

  1. 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

  2. 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.

  3. 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

07

Results

Posted Nov 13, 2018

Participant flow

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.

Participant flow — Overall Study
MilestoneMK-8655 80 mg/MK-8655 320 mgPlacebo
Started2211
Completed2010
Not completed21
Withdrew: Protocol violation21

Outcome measures

PrimaryNumber 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)
Reported as:
Count of participants · Participants
Number of Participants With One or More Adverse Events
ParticipantsMK-8655 80 mg/MK-8655 320 mgPlacebo
Number of Participants With One or More Adverse Events117
PrimaryNumber 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
Reported as:
Count of participants · Participants
Number of Participants Discontinuing Study Drug Due to an Adverse Event
ParticipantsMK-8655 80 mg/MK-8655 320 mgPlacebo
Number of Participants Discontinuing Study Drug Due to an Adverse Event00
PrimaryFasting Plasma Glucose (FPG)

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

Time frame:
Day 16 (Predose)
Reported as:
Mean · mg/dL
Fasting Plasma Glucose (FPG)
mg/dLMK-8655 80 mg/MK-8655 320 mgPlacebo
Fasting Plasma Glucose (FPG)195.5 ± 52.5211.8 ± 70.2
Statistical analysis
  • MK-8655 80 mg/MK-8655 320 mg vs Placebo · Constrained longitudinal data analysis · p = 0.356 (The posterior probability that the reduction in FPG is ≥ 20 mg/dL is 0.06, and hence, the FPG hypothesis was not met.) · Least squares mean difference: -8.50 · 90% CI -47.4 to 30.4
SecondaryTrue 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
Reported as:
Geometric mean · uM
True Geometric Mean Plasma Concentrations of MK-8655 After Single and Multiple Drug Doses at 24 Hours Post Dose (C24)
uMMK-8655 80 mg/MK-8655 320 mgPlacebo
Day 1, MK-8655 80 mg, single dose0.133 ± 68.2—
Day 1, MK-8655 320 mg, multiple doses0.477 ± 72.1—
Day 7, MK-8655 320 mg, multiple doses0.549 ± 66.9—
Day 14, MK-8655 320 mg, multiple doses0.612 ± 69.4—
Secondary24-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.
Reported as:
Mean · mg/dL
24-Hour Weighted Mean Glucose (WMG)
mg/dLMK-8655 80 mg/MK-8655 320 mgPlacebo
24-Hour Weighted Mean Glucose (WMG)205.5 ± 33.95199.9 ± 78.81
Statistical analysis
  • MK-8655 80 mg/MK-8655 320 mg vs Placebo · Constrained longitudinal data analysis · p = 0.2714 (The posterior probability that the reduction in 24h-WMG is ≥ 20 mg/dL is \< 0.01, and hence, the 24h- WMG hypothesis was not met.) · Geometric mean ratio: 1.05 · 90% CI 0.92 to 1.19
SecondaryChange 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
Reported as:
Mean · mg/dL
Change From Baseline at 2 Hours Oral Glucose Tolerance Test
mg/dLMK-8655 80 mg/MK-8655 320 mgPlacebo
Day 1164.0 ± 41.4134.7 ± 74.5
Day 3162.3 ± 37.0135.0 ± 74.1
Day 16172.4 ± 39.2156.1 ± 79.4
Statistical analysis
  • MK-8655 80 mg/MK-8655 320 mg vs Placebo · ANOVA · p = 0.060 · Geometric mean ratio: 1.22 · 95% CI 0.99 to 1.55Placebo-corrected (MK-8655 / placebo)
  • MK-8655 80 mg/MK-8655 320 mg vs Placebo · ANOVA · p = 0.065 · Geometric mean ratio: 1.20 · 95% CI 0.98 to 1.47Placebo-corrected (MK-8655 / placebo)
  • MK-8655 80 mg/MK-8655 320 mg vs Placebo · ANOVA · p = 0.217 · Geometric mean ratio: 1.10 · 95% CI 0.89 to 1.37Placebo-corrected (MK-8655 / placebo)

Adverse events

Collected over Up to 31 days. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
MK-8655 80 mg/MK-8655 320 mg0/22 (0%)0/22 (0%)11/22 (50%)
Placebo0/11 (0%)0/11 (0%)7/11 (63.6%)
Most frequent other events
Showing 10 of 17
Most frequent other events
EventMK-8655 80 mg/MK-8655 320 mgPlacebo
Viral upper respiratory tract infectionInfections and infestations4/223/11
TirednessGeneral disorders1/221/11
Upper respiratory tract infectionInfections and infestations1/221/11
Ferritin decreasedInvestigations1/221/11
Glucose increasedInvestigations2/221/11
Hypoglycaemic reactionMetabolism and nutrition disorders0/221/11
DizzinessNervous system disorders2/221/11
HeadacheNervous system disorders1/221/11
AnxietyPsychiatric disorders0/221/11
Watering eyesEye disorders1/220/11

Baseline characteristics

All randomized participants

Age, Customized
Age, Customized(Participants)MK-8655 80 mg/MK-8655 320 mgPlaceboTotal
31 to 63 years221133
Sex: Female, Male
Sex: Female, Male(Participants)MK-8655 80 mg/MK-8655 320 mgPlaceboTotal
Female11415
Male11718
08

Study locations

No study locations are listed for this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 13, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01640873
Lead sponsor
Merck Sharp & Dohme LLC
Responsible party
Sponsor
First posted
Jul 16, 2012
Start date
Sep 19, 2012
Primary completion
Dec 20, 2012
Completion
Dec 20, 2012
Results posted
Nov 13, 2018
Last update
Nov 13, 2018

Study contacts

Medical Director
study director · Merck Sharp & Dohme LLC

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2018. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion