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MK-8931

Phase 1

Amnestic Mild Cognitive Impairment | Small molecule | Neurology |Merck & Company, Inc.|Last Updated: Oct 1, 2018

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
ACTIVE_CONTROLLEDBiomarker
Total Trials1
Total Enrollment16
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT02910739An Open-Label Study Investigating MK-8931 in Participants With Mild and Moderate Hepatic Insufficiency (MK-8931-016)PHASE1 COMPLETED 16Oct 11, 2016Apr 12, 2017Oct 1, 2018 -
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Study Endpoints
Primary Endpoints
Area Under the Concentration Versus Time Curve of MK-8931 From 0 to Infinity (AUC0-∞)
Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48, 72, 96, and 120 hours after MK-8931 40 mg dose

Blood samples were collected at each pre-specified time point and plasma was isolated for analysis. Plasma MK-8931 concentration was then quantified at each time point to determine AUC0-∞, defined as the area under the MK-8931 concentration versus time curve from 0 (predose) extrapolated to infinity after a single oral dose of MK-8931 40 mg. Individual AUC0-∞ values were natural log (ln) transformed and evaluated with an analysis of covariance (ANCOVA) model containing a categorical factor for participant group (Moderate HI, Healthy Matched Control) and continuous covariates for age and BMI. This ANCOVA model was used to compute a geometric least-squares mean and 95% confidence interval for AUC0-∞ in each arm.

Maximum Observed Plasma Concentration of MK-8931 (Cmax)
Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 24, and 48 hours after MK-8931 40 mg dose

Blood samples were collected at each pre-specified time point and plasma was isolated for analysis. Plasma MK-8931 concentration was then quantified at each time point to determine Cmax, defined as the maximum plasma concentration of MK-8931 observed following oral dosing. Individual Cmax values were ln-transformed and evaluated with an ANCOVA model containing a categorical factor for participant group (Moderate HI, Healthy Matched Control) and continuous covariates for age and BMI. This ANCOVA model was used to compute a geometric least-squares mean and 95% confidence interval for Cmax in each arm.

Area Under the Concentration Versus Time Curve of MK-8931 From 0 to the Time of the Last Quantifiable (Above LLOQ) Sample (AUC0-last)
Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48, 72, 96, and 120 hours after MK-8931 40 mg dose

Blood samples were collected at each pre-specified time point and plasma was isolated for analysis. Plasma MK-8931 concentration was then quantified at each time point to determine AUC0-last, defined as the area under the MK-8931 concentration versus time curve from 0 (predose) to the time of the last sample with quantifiable MK-8931 (above the lower limit of quantification; LLOQ) after a single oral dose of MK-8931 40 mg. Individual AUC0-last values were ln-transformed and evaluated with an ANCOVA model containing a categorical factor for participant group (Moderate HI, Healthy Matched Control) and continuous covariates for age and BMI. This ANCOVA model was used to compute a geometric least-squares mean and 95% confidence interval for AUC0-last in each arm.

Area Under the Concentration Versus Time Curve of MK-8931 From 0 to 24 Hours (AUC0-24hr)
Predose and 0.5, 1, 2, 3, 4, 6, 8, 12 and 24 hours after MK-8931 40 mg dose

Blood samples were collected at each pre-specified time point and plasma was isolated for analysis. Plasma MK-8931 concentration was then quantified at each time point to determine AUC0-24hr, defined as the area under the MK-8931 concentration versus time curve from 0 (predose) until 24 hours after single oral dosing of MK-8931 40 mg. Individual AUC0-24hr values were ln-transformed and evaluated with an ANCOVA model containing a categorical factor for participant group (Moderate HI, Healthy Matched Control) and continuous covariates for age and BMI. This ANCOVA model was used to compute a geometric least-squares mean and 95% confidence interval for AUC0-24hr in each arm.

Plasma Concentration of MK-8931 at 24 Hours (C24hr)
24 hours after MK-8931 40 mg dose

Blood samples were collected 24 hours following oral dosing of MK-8931 and plasma was isolated for analysis. Plasma MK-8931 concentration was then quantified to determine C24hr, defined as the plasma concentration of MK-8931 at 24 hours after single oral dosing of MK-8931 40 mg. Individual C24hr values were ln-transformed and evaluated with an ANCOVA model containing a categorical factor for participant group (Moderate HI, Healthy Matched Control) and continuous covariates for age and BMI. This ANCOVA model was used to compute a geometric least-squares mean and 95% confidence interval for C24hr in each arm.

Apparent Clearance of MK-8931 After Extravascular Administration (CL/F)
Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48, 72, 96, and 120 hours after MK-8931 40 mg dose

Geometric mean apparent clearance of MK-8931 after extravascular administration (CL/F) was assessed. Blood samples were collected at each pre-specified time point and plasma was isolated for analysis. Plasma MK-8931 concentration was then quantified at each time point to determine CL/F, defined as the rate of MK-8931 elimination normalized to the bioavailability of MK-8931 in the plasma following oral MK-8931 administration.

Time to Maximum Observed MK-8931 Plasma Drug Concentration (Tmax)
Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 24, and 48 hours after MK-8931 40 mg dose

Median time to maximum observed MK-8931 plasma drug concentration (Tmax) was assessed. Blood samples were collected at each pre-specified time point and plasma was isolated for analysis. Plasma MK-8931 concentration was then quantified at each time point to determine Tmax, defined as the amount of time required following MK-8931 administration for the plasma concentration of MK-8931 to reach maximum observed concentration.

Apparent Terminal Half-Life of MK-8931 (t1/2)
Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48, 72, 96, and 120 hours after MK-8931 40 mg dose

Geometric mean apparent terminal half-life (t1/2) of MK-8931 was assessed. Blood samples were collected at each pre-specified time point and plasma was isolated for analysis. Plasma MK-8931 concentration was then quantified at each time point to determine t1/2, defined as the time required for the plasma MK-8931 concentration to decrease to 50% of maximum.

Apparent Volume of Distribution of MK-8931 During the Terminal Phase After Extravascular Administration (Vz/F)
Predose and 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 48, 72, 96, and 120 hours after MK-8931 40 mg dose

Geometric mean apparent volume of distribution of MK-8931 during the terminal phase after extravascular administration (Vz/F) was assessed. Blood samples were collected at each pre-specified time point and plasma was isolated for analysis. Plasma MK-8931 concentration was then quantified at each time point to determine Vz/F, defined as the total amount of MK-8931 administered normalized to the bioavailability of MK-8931 in the plasma during the terminal phase following oral MK-8931 administration.

Secondary Endpoints
Number of Participants Experiencing an Adverse Event
Up to 14 days following MK-8931 40 mg administration.
Number of Participants Discontinuing Study Due to an Adverse Event
Up to 14 days following MK-8931 40 mg administration.
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Study Design & Arms
AllocationNON_RANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Part I: MK-8931 40 mg in Moderate HI ParticipantsEXPERIMENTALSingle oral dose of MK-8931 40 mg tablet in participants with moderate HI in fasted state (Part I)
Part I: MK-8931 40 mg in Healthy ParticipantsACTIVE_COMPARATORSingle oral dose of MK-8931 40 mg tablet in healthy matched participants in fasted state (Part I)
Part II: MK-8931 40 mg in Mild HI ParticipantsEXPERIMENTALSingle oral dose of MK-8931 40 mg tablet in participants with mild HI in fasted state (Part II)
Part II: MK-8931 40 mg in Healthy ParticipantsACTIVE_COMPARATORSingle oral dose of MK-8931 40 mg tablet in healthy matched participants in fasted state (Part II)
Interventions
NameTypeDescription
MK-8931DRUGMK-8931 40 mg
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Eligibility Criteria
Age Range45 Years — 85 Years
SexALL
Healthy VolunteersYes

Inclusion Criteria: Participants with HI 1. Adult male or female participants, 45-85 years of age, inclusive, at screening. 2. Body Mass Index (BMI) ≥ 19 and ≤ 40 kg/m\^2, at screening. 3. Continuous non-smokers or light smokers (\< 10 cigarettes/day or the equivalent). 4. Baseline health is judged...

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