MDCS: A Safety, Tolerability, and Pharmacokinetics Study of MK-8189 in Participants With Schizophrenia and in Healthy Participants (MK-8189-007)

Sponsor
Merck Sharp & Dohme LLC (Industry)
Overall Status
Completed
CT.gov ID
NCT03565068
Collaborator
(none)
75
1
8
21.5
3.5

Study Details

Study Description

Brief Summary

This 4-panel study will evaluate the safety, tolerability, pharmacokinetics (PK) and corrected QT interval (QTc) effect of MK-8189 versus placebo, as monotherapy in healthy participants (Panel A) including those of Japanese descent, as monotherapy in participants with schizophrenia (Panel B), as add-on therapy in participants with schizophrenia (Panel C), and under an alternative dosing regimen as monotherapy in participants with schizophrenia (Panel D). Analysis of QTc effect will be exploratory. There will be no hypothesis testing in this study.

Condition or Disease Intervention/Treatment Phase
Phase 1

Detailed Description

As specified by Phase 1 protocol-flexible language in the protocol, modifications to the dose or dosing regimen can be made to achieve the scientific goals of the study objectives and/or to ensure appropriate safety of the study participants. The proposed doses for each Panel may be adjusted downward based on evaluation of observed safety, tolerability, and PK data.

Study Design

Study Type:
Interventional
Actual Enrollment :
75 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Double (Participant, Investigator)
Primary Purpose:
Treatment
Official Title:
A Multiple-dose Clinical Study to Evaluate the Safety, Tolerability, Pharmacokinetics and QTc Effect of MK-8189 in Participants With Schizophrenia and Healthy Participants.
Actual Study Start Date :
Jun 20, 2018
Actual Primary Completion Date :
Apr 3, 2020
Actual Study Completion Date :
Apr 3, 2020

Arms and Interventions

Arm Intervention/Treatment
Experimental: Panel A (Healthy Participants): MK-8189 Monotherapy 4-24 mg

Healthy participants will receive MK-8189 monotherapy orally once daily (QD) in escalating doses from 4 mg to 24 mg, as follows: Days 1-3: 4 mg, Days 4-6: 8 mg, Days 7-9: 12 mg, Days 10-12: 16 mg, Days 13-15: 20 mg, Days 16-18: 24 mg, depending on safety and tolerability.

Drug: MK-8189
MK-8189 4 mg tablet(s) will be administered orally QD for a total daily dose of 4 mg, 8 mg, 12 mg, 16 mg, 20 mg, 24 mg, 36 mg or 48 mg.

Placebo Comparator: Panel A (Healthy Participants): Placebo Monotherapy

Healthy participants will receive MK-8189 monotherapy matching placebo orally QD on Days 1-18.

Drug: Placebo
MK-8189 dose-matching placebo tablets will be administered orally QD.

Experimental: Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4-24 mg

Participants with Schizophrenia will receive MK-8189 monotherapy orally QD in escalating doses from 4 mg to 24 mg, as follows: Days 1-3: 4 mg, Days 4-6: 8 mg, Days 7-9: 12 mg, Days 10-12: 16 mg, Days 13-15: 20 mg, Days 16-18: 24 mg, depending on safety and tolerability.

Drug: MK-8189
MK-8189 4 mg tablet(s) will be administered orally QD for a total daily dose of 4 mg, 8 mg, 12 mg, 16 mg, 20 mg, 24 mg, 36 mg or 48 mg.

Placebo Comparator: Panel B (Schizophrenia Participants): Placebo Monotherapy

Participants with Schizophrenia will receive MK-8189 monotherapy matching placebo orally QD on Days 1-18.

Drug: Placebo
MK-8189 dose-matching placebo tablets will be administered orally QD.

Experimental: Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4-24 mg

In addition to background atypical antipsychotic (AAP) treatment, participants with Schizophrenia will receive MK-8189 add-on therapy orally QD in escalating doses from 4 mg to 24 mg, as follows: Days 1-3: 4 mg, Days 4-6: 8 mg, Days 7-9: 12 mg, Days 10-12: 16 mg, Days 13-15: 20 mg, Days 16-18: 24 mg, depending on safety and tolerability.

Drug: MK-8189
MK-8189 4 mg tablet(s) will be administered orally QD for a total daily dose of 4 mg, 8 mg, 12 mg, 16 mg, 20 mg, 24 mg, 36 mg or 48 mg.

Drug: Background AAP Therapy
Participants with schizophrenia in Panel C will be on background therapy with an AAP medication (e.g., olanzapine, quetiapine, paliperidone, asenapine, iloperidone, aripirprazole, lurasidone, risperidone [not to exceed daily dose of 6 mg], or ziprasidone) throughout the study. Participants should be on a stable and well tolerated treatment regimen for at least 2 months prior to screening. NOTE: clozapine is not allowed.

Placebo Comparator: Panel C (Schizophrenia Participants): Placebo Add-on Therapy

In addition to background AAP treatment, participants with Schizophrenia will receive MK-8189 add-on therapy matching placebo orally QD on Days 1-18.

Drug: Placebo
MK-8189 dose-matching placebo tablets will be administered orally QD.

Drug: Background AAP Therapy
Participants with schizophrenia in Panel C will be on background therapy with an AAP medication (e.g., olanzapine, quetiapine, paliperidone, asenapine, iloperidone, aripirprazole, lurasidone, risperidone [not to exceed daily dose of 6 mg], or ziprasidone) throughout the study. Participants should be on a stable and well tolerated treatment regimen for at least 2 months prior to screening. NOTE: clozapine is not allowed.

Experimental: Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8-48 mg

Participants with Schizophrenia will receive MK-8189 monotherapy orally QD in escalating doses from 8 mg to 48 mg, as follows: Days 1-3: 8 mg, Days 4-6: 16 mg, Days 7-9: 24 mg, Days 10-12: 36 mg, Days 13-15: 48 mg, depending on safety and tolerability.

Drug: MK-8189
MK-8189 4 mg tablet(s) will be administered orally QD for a total daily dose of 4 mg, 8 mg, 12 mg, 16 mg, 20 mg, 24 mg, 36 mg or 48 mg.

Placebo Comparator: Panel D (Schizophrenia Participants): Placebo Monotherapy

Participants with Schizophrenia will receive MK-8189 monotherapy matching placebo orally QD on Days 1-15.

Drug: Placebo
MK-8189 dose-matching placebo tablets will be administered orally QD.

Outcome Measures

Primary Outcome Measures

  1. The Number of Participants Who Experienced One or More Adverse Events (AEs) [Up to ~32 days]

    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. Per protocol, safety was analyzed by panel and dose. The number of participants who experienced one or more AEs was reported.

  2. The Number of Participants Who Discontinued Study Treatment Due to an AE [Up to ~18 days]

    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. Per protocol, safety was analyzed by panel and dose. The number of participants who discontinued study treatment due to an AE was reported.

Secondary Outcome Measures

  1. Area Under the Plasma-concentration Curve at Zero to 24 Hours Post-dose (AUC0-24hr) of MK-8189 [Pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose; no pre-dose on Day 18 (Panel A, B, C), Day 15 (Panel D); Panel A, B: Days 7, 10, 13, 16, 18; Panel C: Days 9, 12, 15, 18; Panel D: Days 1, 4, 7, 10, 13, 15]

    AUC was a measure of MK-8189 exposure assessed as a product of drug concentration and time, using a linear mixed effects model. To estimate AUC0-24hr per protocol blood samples were collected pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose for Panels A, B, C, D; no pre-dose samples collected on Day 18 (Panels A, B, C), Day 15 (Panel D). Samples were collected on Days 7, 10, 13, 16, 18 for Panels A, B; Days 9, 12, 15, 18 for Panel C; Days 1, 4, 7, 10, 13, 15 for Panel D. Per protocol AUC0-24hr was analyzed by panel, dose, dosing regimen; due to differing dosing regimen some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen the 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) study arms weren't applicable to the protocol-specified timepoints/days of AUC0-24hr analysis and these arms were excluded. Geometric coefficient of variation (GCV) was reported as a percent. Per protocol placebo arms were excluded from AUC0-24hr analysis.

  2. Maximum Observed Post-dose Plasma Concentration (Cmax) of MK-8189 [Pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose; no pre-dose on Day 18 (Panel A, B, C), Day 15 (Panel D);additional 36, 48 hours post-dose on Days 18, 15; Panel A, B: Days 7, 10, 13, 16, 18; Panel C: Days 9, 12, 15, 18; Panel D:Days 1, 4, 7, 10, 13, 15]

    Cmax was the maximum concentration of MK-8189 observed in plasma, assessed using a linear mixed effects model. To estimate Cmax, per protocol blood samples were collected pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose for Panels A, B, C, D; no pre-dose samples collected on Day 18 (Panels A, B, C), Day 15 (Panel D); additional post-dose samples collected at 36, 48 hours on Days 18 and 15. Samples were collected on Days 7, 10, 13, 16, 18 for Panels A, B; Days 9, 12, 15, 18 for Panel C; Days 1, 4, 7, 10, 13, 15 for Panel D. Per protocol Cmax was analyzed by panel, dose, dosing regimen; due to differing dosing regimen some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) study arms weren't applicable to the protocol-specified timepoints/days of Cmax analysis and were excluded. GCV was reported as a percent. Per protocol placebo arms were excluded from Cmax analysis.

  3. Plasma Concentration at 24 Hours Post-dose (C24hr) of MK-8189 [24 hours post-dose; Panel A, B: Days 7, 10, 13, 16, 18; Panel C: Days 9, 12, 15, 18; Panel D: Days 1, 4, 7, 10, 13, 15]

    C24hr was the concentration of MK-8189 observed in plasma at the 24-hour nominal sampling time after administration of MK-8189, assessed using a linear mixed effects model. To estimate C24hr, per protocol blood samples were collected 24 hours post-dose on Days 7, 10, 13, 16, 18 for Panels A, B; Days 9, 12, 15, 18 for Panel C; Days 1, 4, 7, 10, 13, 15 for Panel D. Per protocol C24hr was analyzed by panel, dose, dosing regimen; due to differing dosing regimen some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) study arms weren't applicable to the protocol-specified timepoints/days of C24hr analysis and were excluded. GCV was reported as a percent. Per protocol placebo arms were excluded from C24hr analysis.

  4. Time Post-dose to Maximum Observed Plasma Concentration (Tmax) of MK-8189 [Pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose; no pre-dose on Day 18 (Panel A, B, C), Day 15 (Panel D);additional 36, 48 hours post-dose on Days 18, 15; Panel A, B: Days 7, 10, 13, 16, 18; Panel C: Days 9, 12, 15, 18; Panel D:Days 1, 4, 7, 10, 13, 15]

    Tmax was the actual sampling time at which maximum post-dose plasma concentration of MK-8189 was observed. To estimate Tmax, per protocol blood samples were collected pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose for Panels A, B, C, D; no pre-dose samples collected on Day 18 (Panels A, B, C), Day 15 (Panel D); additional post-dose samples collected at 36, 48 hours on Days 18 and 15. Samples were collected on Days 7, 10, 13, 16, 18 for Panels A, B; Days 9, 12, 15, 18 for Panel C; Days 1, 4, 7, 10, 13, 15 for Panel D. Per protocol Tmax was analyzed by panel, dose, dosing regimen; due to differing dosing regimen, some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) study arms weren't applicable to the protocol-specified timepoints/days of Tmax analysis and were excluded. Per protocol placebo arms were excluded from Tmax analysis.

  5. Apparent Total Plasma Clearance of MK-8189 (CL/F) on Day 18 (Panels A, B, C) and Day 15 (Panel D) [2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 (Panel A, B, C) and Day 15 (Panel D)]

    CL/F was the apparent total clearance of MK-8189 in plasma over time, assessed as the rate at which MK-8189 was removed from the plasma. To estimate CL/F, per protocol blood samples were collected 2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 for Panels A, B, C, and on Day 15 for Panel D. Per protocol CL/F was analyzed by panel, dose and dosing regimen. Due to differing dosing regimen, some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg, 12 mg, 16 mg, 20 mg (Panels A, B, C), 8 mg, 16 mg, 24 mg, 36 mg (Panel D) study arms weren't applicable to the protocol-specified timepoints/days of CL/F analysis and were excluded. GCV was reported as a percent. Per protocol placebo arms were excluded from CL/F analysis.

  6. Apparent Volume of MK-8189 Distribution (Vd/F) on Day 18 (Panels A, B, C) and Day 15 (Panel D) [2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 (Panel A, B, C) and Day 15 (Panel D)]

    Vd/F was the apparent volume of distribution of MK-8189 between the plasma and the rest of the body, after dose, assessed as the total volume of MK-8189 that would need to be uniformly distributed to achieve the desired plasma drug concentration. To estimate Vd/F, per protocol blood samples were collected 2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 for Panels A, B, C, and on Day 15 for Panel D. Per protocol Vd/F was analyzed by panel, dose and dosing regimen. Due to differing dosing regimen, some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg, 12 mg, 16 mg, 20 mg (Panels A, B, C), 8 mg, 16 mg, 24 mg, 36 mg (Panel D) study arms weren't applicable to the protocol-specified timepoints/days of Vd/F analysis and were excluded. GCV was reported as a percent. Per protocol placebo arms were excluded from Vd/F analysis.

  7. Time Required for Plasma Concentration of MK-8189 to Decrease by Half (Apparent Terminal Half-life [t1/2]) on Day 18 (Panels A, B, C) and Day 15 (Panel D) [2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 (Panel A, B, C) and Day 15 (Panel D)]

    t1/2 was the time required to divide the plasma concentration of MK-8189 by half after reaching pseudo-equilibrium. At least three quantifiable terminal phase concentrations collected were used to calculate t1/2. To estimate t1/2, per protocol blood samples were collected 2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 for Panels A, B, C, and on Day 15 for Panel D. Per protocol t1/2 was analyzed by panel, dose and dosing regimen. Due to differing dosing regimen, some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg, 12 mg, 16 mg, 20 mg (Panels A, B, C), 8 mg, 16 mg, 24 mg, 36 mg (Panel D) study arms weren't applicable to the protocol-specified timepoints/days of t1/2 analysis and were excluded. GCV was reported as a percent. Per protocol placebo arms were excluded from t1/2 analysis.

Eligibility Criteria

Criteria

Ages Eligible for Study:
18 Years to 60 Years
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
Yes

Inclusion Criteria

Panel A (Healthy Participants)

  • If participant is of Japanese descent, both biological parents and all biological grandparents must be born in Japan.

Panels B and D (Participants with Schizophrenia; MK-8189 or Placebo Monotherapy / 15-Day Titration Monotherapy) - Is able to discontinue the use of all antipsychotic medication at least 5 days prior to the start of the treatment period and during the study period.

Panels B, C, and D (Participants with Schizophrenia; MK-8189 or Placebo Monotherapy / Add-on Therapy / 15-Day Titration Monotherapy)

  • Meets diagnostic criteria for schizophrenia or schizoaffective disorder according to the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) criteria with the onset of the first episode being no less than 2 years prior to screening and monotherapy with antipsychotics for treatment should be indicated.

  • Is in the non-acute phase of their illness and clinically stable for 3 months prior to screening as demonstrated by: a.) no clinically significant change in dose of prescribed antipsychotic medication, or clinically significant change in antipsychotic medication to treat symptoms of schizophrenia for 2 months prior to screening; b.) no increase in level of psychiatric care due to worsening of symptoms of schizophrenia for 3 months prior to screening.

  • Has a history of receiving and tolerating antipsychotic medication within the usual dose range employed for schizophrenia.

  • Has a stable living situation in which the participant or a contact person can be reached by the investigator if there is a need for follow up.

  • Participants with hypothyroidism, diabetes, high blood pressure, chronic respiratory conditions or other mild forms of these medical conditions could be considered as candidates for study enrollment if their condition is stable and the prescribed dose and regimen of medication is stable for at least 3 months prior to screening and there are no expected changes in co-medication during the study.

  • Has regular bowel movements.

Panels A, B, C, and D

  • A female participant is eligible to participate if she is not pregnant or breastfeeding, and at least one of the following conditions applies:

  • Is not a woman of childbearing potential (WOCBP)

  • Is a WOCBP and using a contraceptive method that is highly effective, or be abstinent from heterosexual intercourse as their preferred and usual lifestyle (abstinent on a long term and persistent basis), during the intervention period and for at least 14 days after the last dose of study intervention.

Exclusion Criteria

Panel A (Healthy Participants)

  • Has a history of clinically diagnosed depression, anxiety disorder, or any history of psychiatric disorders having required drug treatment or hospitalization. Participants who have had situational depression more than 5 years before the start of the study may be enrolled in the study at the discretion of the investigator.

  • Has a history of stroke, chronic seizures, or major neurological disorder.

  • Has a history of dystonic reaction to antipsychotic, anti-emetic or related medication.

  • Is at imminent risk of self-harm, based on clinical interview and responses on the Columbia Suicide Severity Rating Scale (C-SSRS), or of harm to others in the opinion of the investigator. Participants must be excluded if they report suicidal ideation with intent, with or without a plan or method (e.g., positive response to item 4 or 5 in assessment of suicidal ideation on the C-SSRS) in the past 5 years or suicidal behavior in their lifetime.

  • Has a history of clinically significant endocrine, gastrointestinal, cardiovascular, hematological, hepatic, immunological, renal, respiratory, genitourinary, or major neurological (including stroke and chronic seizures) abnormalities or diseases. Participants with a remote history of uncomplicated medical events may be enrolled in the study at the discretion of the investigator.

  • Is mentally or legally incapacitated, has a history of clinically significant psychiatric disorder of the last 5 years. Participants who have had situational depression may be enrolled in the study at the discretion of the investigator.

  • Is unable to refrain from or anticipates the use of any medication, including prescription and nonprescription drugs or herbal remedies, beginning approximately 2 weeks (or 5 half-lives) prior to administration of the initial dose of study drug, throughout the study (including washout intervals between treatment periods), until the poststudy visit.

  • Is a smoker and/or has used nicotine or nicotine-containing products (e.g., nicotine patch and electronic cigarette) within 3 months of screening.

Panels B, C, and D (Participants with Schizophrenia; MK-8189 or Placebo Monotherapy / Add-on Therapy / 15-Day Titration Monotherapy)

  • Has evidence or history of a primary DSM-5 axis I psychiatric diagnosis other than schizophrenia or schizoaffective disorder per the allowed DSM-5 criteria within 1 month of screening.

  • Has evidence or history of mental retardation, borderline personality disorder, anxiety disorder, or organic brain syndrome.

  • Has a history of neuroleptic malignant syndrome or moderate to severe tardive dyskinesia (TD).

  • Has a substance-induced psychotic disorder or behavioral disturbance thought to be due to substance abuse.

  • Has a DSM-5 defined substance abuse or dependence disorder (excluding nicotine and caffeine) within three months of screening.

  • Has a history of seizure disorder beyond childhood or is receiving treatment with any anticonvulsant to prevent seizures.

  • Is at imminent risk of self-harm, based on clinical interview and responses on the C-SSRS, or of harm to others in the opinion of the investigator. Participants must be excluded if they report suicidal ideation with intent, with or without a plan or method (e.g., positive response to item 4 or 5 in assessment of suicidal ideation on the C-SSRS) in the past 2 months or suicidal behavior in the past 6 months.

  • Has received treatment with clozapine for schizophrenia or treatment with monoamine oxidase inhibitors within 3 months of screening. For Panel C participants, has received a total daily dose of risperidone > 6 mg.

  • Is unable to refrain from the use of co-medication with a moderate or strong inhibiting or inducing effect on cytochrome P450 (CYP) 3A (CYP3A) and/or CYP2C9 beginning approximately 2 weeks or 5 half- lives, whichever is longer, prior to administration of the initial dose of trial drug and throughout the trial or is unable to refrain from the use of sensitive substrates of CYP2B6. Unable to refrain from cyclic hormone replacement therapy. There may be certain medications that are permitted

  • Has received a parenteral depot antipsychotic medication within 3 months of pre-trial (screening).

Panels A, B, C, and D

  • Is a woman of childbearing potential (WOCBP) who has a positive serum pregnancy test at the screening visit or a positive urine pregnancy test within 48 hours before the first dose of study intervention. If the urine test is positive or cannot be confirmed as negative, a serum pregnancy test will be required.

  • Has a history of cancer (malignancy). Exceptions include: (1) Participants with adequately treated nonmelanomatous skin carcinoma or carcinoma in situ of the cervix may participate in the study; (2) Participants with other malignancies which have been successfully treated ≥10 years prior to the prestudy (screening) visit where, in the judgment of both the investigator and treating physician, appropriate follow-up has revealed no evidence of recurrence from the time of treatment through the time of the prestudy (screening) visit (except those cancers identified at the beginning of this exclusion criteria); or (3) Participants, who, in the opinion of the study investigator, are highly unlikely to sustain a recurrence for the duration of the study.

  • Has a clinically significant history or presence of sick sinus syndrome, first, second, or third degree atrioventricular (AV) block, myocardial infarction, pulmonary congestion, cardiac arrhythmia, prolonged QTc interval, or conduction abnormalities.

  • Has history of repeated or frequent syncope, vasovagal episodes, or epileptic seizures.

  • Has a family history of sudden death.

  • Has a history of any illness that, in the opinion of the study investigator, might confound the results of the study or poses an additional risk to the participant by their participation in the study.

  • Has a history of significant multiple and/or severe allergies (e.g., food, drug, latex allergy), or has had an anaphylactic reaction or significant intolerability (i.e., systemic allergic reaction) to prescription or non-prescription drugs or food.

  • Has Hepatitis B, Hepatitis C or Human Immunodeficiency Virus (HIV) infection.

  • Had major surgery, donated or lost 1 unit of blood (approximately 500 mL) within 4 weeks prior to the prestudy (screening) visit.

  • Has participated in another investigational study within 4 weeks (or 5 half-lives, whichever is greater) prior to the prestudy (screening) visit. The window will be derived from the date of the last visit in the previous study.

  • Has history or presence of risk factors for Torsade de Pointes (e.g., cardiac disease, heart failure, hypokalaemia or hypomagnesaemia, hypertrophy, cardiomyopathy, or family history of long QT syndrome). Plasma calcium must be within normal limits at screening and serum calcium must be within normal limits prior to dosing.

  • Is under the age of legal consent.

  • Has been in incarceration or imprisonment within 3 months prior to screening.

  • Consumes greater than 3 glasses of alcoholic beverages per day. Participants who consume 4 glasses of alcoholic beverages per day may be enrolled at the discretion of the investigator.

  • Consumes excessive amounts, defined as greater than 6 servings (1 serving is approximately equivalent to 120 mg of caffeine) of coffee, tea, cola, energy drinks, or other caffeinated beverages per day.

  • Is a regular user of cannabis, any illicit drugs or has a history of drug (including alcohol) abuse within approximately 3 years.

Contacts and Locations

Locations

Site City State Country Postal Code
1 California Clinical Trials ( Site 0001) Glendale California United States 91206

Sponsors and Collaborators

  • Merck Sharp & Dohme LLC

Investigators

  • Study Director: Medical Director, Merck Sharp & Dohme LLC

Study Documents (Full-Text)

More Information

Publications

None provided.
Responsible Party:
Merck Sharp & Dohme LLC
ClinicalTrials.gov Identifier:
NCT03565068
Other Study ID Numbers:
  • 8189-007
  • MK-8189-007
First Posted:
Jun 21, 2018
Last Update Posted:
Mar 29, 2021
Last Verified:
Mar 1, 2021
Individual Participant Data (IPD) Sharing Statement:
Yes
Plan to Share IPD:
Yes
Studies a U.S. FDA-regulated Drug Product:
Yes
Studies a U.S. FDA-regulated Device Product:
No
Additional relevant MeSH terms:

Study Results

Participant Flow

Recruitment Details
Pre-assignment Detail Per protocol-specified dose modification, Panel C MK-8189 dose and schedule were modified, based on tolerability.
Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4-24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4-24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4-24 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4-8 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8-48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Arm/Group Description Healthy participants received MK-8189 monotherapy orally once daily (QD) in escalating doses from 4 mg to 24 mg, as follows: Days 1-3: 4 mg, Days 4-6: 8 mg, Days 7-9: 12 mg, Days 10-12: 16 mg, Days 13-15: 20 mg, Days 16-18: 24 mg. Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18. Participants with Schizophrenia received MK-8189 monotherapy orally QD in escalating doses from 4 mg to 24 mg, as follows: Days 1-3: 4 mg, Days 4-6: 8 mg, Days 7-9: 12 mg, Days 10-12: 16 mg, Days 13-15: 20 mg, Days 16-18: 24 mg. Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-18. In addition to background atypical antipsychotic (AAP) treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD in escalating doses from 4 mg to 24 mg, as follows: Days 1-3: 4 mg, Days 4-6: 8 mg, Days 7-9: 12 mg, Days 10-12: 16 mg, Days 13-15: 20 mg, Days 16-18: 24 mg. In addition to background AAP treatment, participant with Schizophrenia received modified regimen of MK-8189 add-on therapy orally QD in escalating doses from 4 mg to 8 mg, as follows: Days 1-3: 4 mg, Days 4-11: 8 mg. In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18. Participants with Schizophrenia received MK-8189 monotherapy orally QD in escalating doses from 8 mg to 48 mg, as follows: Days 1-3: 8 mg, Days 4-6: 16 mg, Days 7-9: 24 mg, Days 10-12: 36 mg, Days 13-15: 48 mg. Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15.
Period Title: Overall Study
STARTED 12 4 12 4 12 1 4 17 9
COMPLETED 12 4 11 4 8 0 3 9 8
NOT COMPLETED 0 0 1 0 4 1 1 8 1

Baseline Characteristics

Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4-24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4-24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4-24 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4-8 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8-48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy Total
Arm/Group Description Healthy participants received MK-8189 monotherapy orally once daily (QD) in escalating doses from 4 mg to 24 mg, as follows: Days 1-3: 4 mg, Days 4-6: 8 mg, Days 7-9: 12 mg, Days 10-12: 16 mg, Days 13-15: 20 mg, Days 16-18: 24 mg. Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18. Participants with Schizophrenia received MK-8189 monotherapy orally QD in escalating doses from 4 mg to 24 mg, as follows: Days 1-3: 4 mg, Days 4-6: 8 mg, Days 7-9: 12 mg, Days 10-12: 16 mg, Days 13-15: 20 mg, Days 16-18: 24 mg. Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-18. In addition to background atypical antipsychotic (AAP) treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD in escalating doses from 4 mg to 24 mg, as follows: Days 1-3: 4 mg, Days 4-6: 8 mg, Days 7-9: 12 mg, Days 10-12: 16 mg, Days 13-15: 20 mg, Days 16-18: 24 mg. In addition to background AAP treatment, participant with Schizophrenia received modified regimen of MK-8189 add-on therapy orally QD in escalating doses from 4 mg to 8 mg, as follows: Days 1-3: 4 mg, Days 4-11: 8 mg. In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18. Participants with Schizophrenia received MK-8189 monotherapy orally QD in escalating doses from 8 mg to 48 mg, as follows: Days 1-3: 8 mg, Days 4-6: 16 mg, Days 7-9: 24 mg, Days 10-12: 36 mg, Days 13-15: 48 mg. Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15. Total of all reporting groups
Overall Participants 12 4 12 4 12 1 4 17 9 75
Age (Years) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [Years]
36.8
(8.2)
43.3
(15.4)
49.3
(9.5)
44.0
(8.9)
44.3
(7.1)
51.0
(NA)
47.8
(7.2)
44.4
(10.0)
41.7
(9.6)
43.8
(9.6)
Sex: Female, Male (Count of Participants)
Female
8
66.7%
2
50%
6
50%
0
0%
5
41.7%
1
100%
2
50%
8
47.1%
4
44.4%
36
48%
Male
4
33.3%
2
50%
6
50%
4
100%
7
58.3%
0
0%
2
50%
9
52.9%
5
55.6%
39
52%
Ethnicity (NIH/OMB) (Count of Participants)
Hispanic or Latino
0
0%
1
25%
1
8.3%
1
25%
1
8.3%
0
0%
0
0%
2
11.8%
0
0%
6
8%
Not Hispanic or Latino
12
100%
3
75%
11
91.7%
3
75%
11
91.7%
1
100%
4
100%
15
88.2%
9
100%
69
92%
Unknown or Not Reported
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
Race (NIH/OMB) (Count of Participants)
American Indian or Alaska Native
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
Asian
6
50%
2
50%
0
0%
1
25%
0
0%
0
0%
0
0%
0
0%
0
0%
9
12%
Native Hawaiian or Other Pacific Islander
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
Black or African American
3
25%
1
25%
11
91.7%
2
50%
10
83.3%
1
100%
4
100%
14
82.4%
8
88.9%
54
72%
White
3
25%
1
25%
1
8.3%
1
25%
0
0%
0
0%
0
0%
3
17.6%
1
11.1%
10
13.3%
More than one race
0
0%
0
0%
0
0%
0
0%
2
16.7%
0
0%
0
0%
0
0%
0
0%
2
2.7%
Unknown or Not Reported
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%
0
0%

Outcome Measures

1. Secondary Outcome
Title Area Under the Plasma-concentration Curve at Zero to 24 Hours Post-dose (AUC0-24hr) of MK-8189
Description AUC was a measure of MK-8189 exposure assessed as a product of drug concentration and time, using a linear mixed effects model. To estimate AUC0-24hr per protocol blood samples were collected pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose for Panels A, B, C, D; no pre-dose samples collected on Day 18 (Panels A, B, C), Day 15 (Panel D). Samples were collected on Days 7, 10, 13, 16, 18 for Panels A, B; Days 9, 12, 15, 18 for Panel C; Days 1, 4, 7, 10, 13, 15 for Panel D. Per protocol AUC0-24hr was analyzed by panel, dose, dosing regimen; due to differing dosing regimen some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen the 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) study arms weren't applicable to the protocol-specified timepoints/days of AUC0-24hr analysis and these arms were excluded. Geometric coefficient of variation (GCV) was reported as a percent. Per protocol placebo arms were excluded from AUC0-24hr analysis.
Time Frame Pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose; no pre-dose on Day 18 (Panel A, B, C), Day 15 (Panel D); Panel A, B: Days 7, 10, 13, 16, 18; Panel C: Days 9, 12, 15, 18; Panel D: Days 1, 4, 7, 10, 13, 15

Outcome Measure Data

Analysis Population Description
All participants who got ≥1 dose of MK-8189, had AUC0-24hr data for Days 7, 10, 13, 16 or 18 (Panels A, B); Days 9, 12, 15 or 18 (Panel C); Days 1, 4, 7, 10, 13 or 15 (Panel D). Per protocol AUC0-24hr was analyzed by panel, dose, dosing regimen; based on dosing, some arms weren't applicable to some timepoints shown by 0 participants analyzed. The 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) arms weren't applicable to the AUC0-24hr timepoints; per protocol these arms and placebo arms were excluded.
Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Arm/Group Description Healthy participants received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD from Days 1-18. In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability In addition to background AAP treatment, participant with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 11, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 36 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 48 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15
Measure Participants 0 0 11 11 10 10 0 0 0 11 11 10 10 0 0 1 10 8 7 7 0 17 16 15 13 11 0
Day 1
4640
(40.5)
Day 4
10900
(72.1)
Day 7
8360
(42.5)
11700
(32.9)
14100
(106.6)
Day 9
11400
(NA)
11300
(47.9)
Day 10
10200
(49.0)
17200
(41.9)
25100
(54.6)
Day 12
13800
(28.2)
Day 13
12200
(48.5)
20200
(44.7)
31800
(54.5)
Day 15
15700
(33.4)
34400
(66.5)
Day 16
15600
(36.1)
24600
(36.6)
Day 18
13600
(59.6)
26600
(38.3)
18900
(30.8)
2. Primary Outcome
Title The Number of Participants Who Experienced One or More Adverse Events (AEs)
Description 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. Per protocol, safety was analyzed by panel and dose. The number of participants who experienced one or more AEs was reported.
Time Frame Up to ~32 days

Outcome Measure Data

Analysis Population Description
All participants who got ≥1 dose of study drug. Per protocol, safety was analyzed by panel and dose.
Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Arm/Group Description Healthy participants received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD from Days 1-18. In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 11, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 36 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 48 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15
Measure Participants 12 12 11 11 10 10 4 12 11 11 11 10 10 4 13 11 10 8 7 7 4 17 16 15 13 11 9
Count of Participants [Participants]
5
41.7%
3
75%
4
33.3%
5
125%
2
16.7%
5
500%
3
75%
4
23.5%
3
33.3%
4
5.3%
8
NaN
5
NaN
7
NaN
4
NaN
6
NaN
8
NaN
5
NaN
5
NaN
4
NaN
4
NaN
1
NaN
8
NaN
8
NaN
5
NaN
5
NaN
8
NaN
9
NaN
3. Primary Outcome
Title The Number of Participants Who Discontinued Study Treatment Due to an AE
Description 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. Per protocol, safety was analyzed by panel and dose. The number of participants who discontinued study treatment due to an AE was reported.
Time Frame Up to ~18 days

Outcome Measure Data

Analysis Population Description
All participants who got ≥1 dose of study drug. Per protocol, safety was analyzed by panel and dose.
Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Arm/Group Description Healthy participants received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD from Days 1-18. In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 11, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 36 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 48 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15
Measure Participants 12 12 11 11 10 10 4 12 11 11 11 10 10 4 13 11 10 8 7 7 4 17 16 15 13 11 9
Count of Participants [Participants]
1
8.3%
0
0%
0
0%
1
25%
0
0%
0
0%
0
0%
1
5.9%
0
0%
0
0%
1
NaN
0
NaN
0
NaN
1
NaN
1
NaN
1
NaN
3
NaN
1
NaN
0
NaN
0
NaN
0
NaN
1
NaN
3
NaN
0
NaN
1
NaN
0
NaN
2
NaN
4. Secondary Outcome
Title Maximum Observed Post-dose Plasma Concentration (Cmax) of MK-8189
Description Cmax was the maximum concentration of MK-8189 observed in plasma, assessed using a linear mixed effects model. To estimate Cmax, per protocol blood samples were collected pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose for Panels A, B, C, D; no pre-dose samples collected on Day 18 (Panels A, B, C), Day 15 (Panel D); additional post-dose samples collected at 36, 48 hours on Days 18 and 15. Samples were collected on Days 7, 10, 13, 16, 18 for Panels A, B; Days 9, 12, 15, 18 for Panel C; Days 1, 4, 7, 10, 13, 15 for Panel D. Per protocol Cmax was analyzed by panel, dose, dosing regimen; due to differing dosing regimen some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) study arms weren't applicable to the protocol-specified timepoints/days of Cmax analysis and were excluded. GCV was reported as a percent. Per protocol placebo arms were excluded from Cmax analysis.
Time Frame Pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose; no pre-dose on Day 18 (Panel A, B, C), Day 15 (Panel D);additional 36, 48 hours post-dose on Days 18, 15; Panel A, B: Days 7, 10, 13, 16, 18; Panel C: Days 9, 12, 15, 18; Panel D:Days 1, 4, 7, 10, 13, 15

Outcome Measure Data

Analysis Population Description
All participants who got ≥1 dose of MK-8189, had Cmax data for Days 7, 10, 13, 16 or 18 (Panels A, B); Days 9, 12, 15 or 18 (Panel C); Days 1, 4, 7, 10, 13 or 15 (Panel D). Per protocol Cmax was analyzed by panel, dose, dosing regimen; based on dosing, some arms weren't applicable to some timepoints shown by 0 participants analyzed. The 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) arms weren't applicable to the Cmax timepoints; per protocol these arms and placebo arms were excluded.
Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Arm/Group Description Healthy participants received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD from Days 1-18. In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability In addition to background AAP treatment, participant with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 11, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 36 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 48 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15
Measure Participants 0 0 11 11 10 10 0 0 0 11 11 10 10 0 0 1 10 8 7 7 0 17 16 15 13 11 0
Day 1
328
(42.8)
Day 4
619
(52.5)
Day 7
481
(41.6)
588
(33.7)
920
(54.5)
Day 9
591
(NA)
566
(46.3)
Day 10
613
(37.2)
868
(41.5)
1390
(46.1)
Day 12
693
(24.6)
Day 13
709
(47.1)
1010
(45.0)
1670
(51.9)
Day 15
801
(27.3)
1890
(52.9)
Day 16
807
(34.0)
1250
(37.7)
Day 18
741
(48.0)
1300
(36.8)
972
(23.4)
5. Secondary Outcome
Title Plasma Concentration at 24 Hours Post-dose (C24hr) of MK-8189
Description C24hr was the concentration of MK-8189 observed in plasma at the 24-hour nominal sampling time after administration of MK-8189, assessed using a linear mixed effects model. To estimate C24hr, per protocol blood samples were collected 24 hours post-dose on Days 7, 10, 13, 16, 18 for Panels A, B; Days 9, 12, 15, 18 for Panel C; Days 1, 4, 7, 10, 13, 15 for Panel D. Per protocol C24hr was analyzed by panel, dose, dosing regimen; due to differing dosing regimen some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) study arms weren't applicable to the protocol-specified timepoints/days of C24hr analysis and were excluded. GCV was reported as a percent. Per protocol placebo arms were excluded from C24hr analysis.
Time Frame 24 hours post-dose; Panel A, B: Days 7, 10, 13, 16, 18; Panel C: Days 9, 12, 15, 18; Panel D: Days 1, 4, 7, 10, 13, 15

Outcome Measure Data

Analysis Population Description
All participants who got ≥1 dose of MK-8189, had C24hr data for Days 7, 10, 13, 16 or 18 (Panels A, B); Days 9, 12, 15 or 18 (Panel C); Days 1, 4, 7, 10, 13 or 15 (Panel D). Per protocol C24hr was analyzed by panel, dose, dosing regimen; based on dosing, some arms weren't applicable to some timepoints shown by 0 participants analyzed. The 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) arms weren't applicable to the C24hr timepoints; per protocol these arms and placebo arms were excluded.
Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Arm/Group Description Healthy participants received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD from Days 1-18. In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability In addition to background AAP treatment, participant with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 11, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 36 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 48 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15
Measure Participants 0 0 11 6 10 10 0 0 0 11 11 10 10 0 0 1 10 8 6 7 0 17 16 14 13 11 0
Day 1
287
(70.3)
Day 4
480
(101.8)
Day 7
310
(47.2)
501
(37.9)
567
(131.4)
Day 9
416
(NA)
490
(54.0)
Day 10
392
(61.4)
702
(46.9)
890
(80.3)
Day 12
540
(39.1)
Day 13
418
(65.0)
836
(57.0)
1370
(47.5)
Day 15
651
(44.1)
1160
(97.8)
Day 16
625
(39.7)
949
(45.7)
Day 18
433
(111.3)
1010
(47.5)
704
(39.0)
6. Secondary Outcome
Title Time Post-dose to Maximum Observed Plasma Concentration (Tmax) of MK-8189
Description Tmax was the actual sampling time at which maximum post-dose plasma concentration of MK-8189 was observed. To estimate Tmax, per protocol blood samples were collected pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose for Panels A, B, C, D; no pre-dose samples collected on Day 18 (Panels A, B, C), Day 15 (Panel D); additional post-dose samples collected at 36, 48 hours on Days 18 and 15. Samples were collected on Days 7, 10, 13, 16, 18 for Panels A, B; Days 9, 12, 15, 18 for Panel C; Days 1, 4, 7, 10, 13, 15 for Panel D. Per protocol Tmax was analyzed by panel, dose, dosing regimen; due to differing dosing regimen, some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) study arms weren't applicable to the protocol-specified timepoints/days of Tmax analysis and were excluded. Per protocol placebo arms were excluded from Tmax analysis.
Time Frame Pre-dose, 2, 6, 8, 10, 12, 16, 24 hours post-dose; no pre-dose on Day 18 (Panel A, B, C), Day 15 (Panel D);additional 36, 48 hours post-dose on Days 18, 15; Panel A, B: Days 7, 10, 13, 16, 18; Panel C: Days 9, 12, 15, 18; Panel D:Days 1, 4, 7, 10, 13, 15

Outcome Measure Data

Analysis Population Description
All participants who got ≥1 dose of MK-8189, had Tmax data for Days 7, 10, 13, 16 or 18 (Panels A, B); Days 9, 12, 15 or 18 (Panel C); Days 1, 4, 7, 10, 13 or 15 (Panel D). Per protocol Tmax was analyzed by panel, dose, dosing regimen; based on dosing, some arms weren't applicable to some timepoints shown by 0 participants analyzed. The 4 mg, 8 mg (Panels A, B), 4 mg (Panel C) arms weren't applicable to the Tmax timepoints; per protocol these arms and placebo arms were excluded.
Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Arm/Group Description Healthy participants received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD from Days 1-18. In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability In addition to background AAP treatment, participant with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 11, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 36 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 48 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15
Measure Participants 0 0 11 11 10 10 0 0 0 11 11 10 10 0 0 1 10 8 7 7 0 17 16 15 13 11 0
Day 1
23.95
Day 4
12.04
Day 7
12.02
15.98
16.03
Day 9
12.00
15.99
Day 10
16.02
16.07
12.00
Day 12
11.09
Day 13
14.04
16.05
16.02
Day 15
16.00
16.02
Day 16
13.99
10.09
Day 18
11.99
12.05
12.00
7. Secondary Outcome
Title Apparent Total Plasma Clearance of MK-8189 (CL/F) on Day 18 (Panels A, B, C) and Day 15 (Panel D)
Description CL/F was the apparent total clearance of MK-8189 in plasma over time, assessed as the rate at which MK-8189 was removed from the plasma. To estimate CL/F, per protocol blood samples were collected 2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 for Panels A, B, C, and on Day 15 for Panel D. Per protocol CL/F was analyzed by panel, dose and dosing regimen. Due to differing dosing regimen, some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg, 12 mg, 16 mg, 20 mg (Panels A, B, C), 8 mg, 16 mg, 24 mg, 36 mg (Panel D) study arms weren't applicable to the protocol-specified timepoints/days of CL/F analysis and were excluded. GCV was reported as a percent. Per protocol placebo arms were excluded from CL/F analysis.
Time Frame 2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 (Panel A, B, C) and Day 15 (Panel D)

Outcome Measure Data

Analysis Population Description
All participants who got ≥1 dose of MK-8189, had CL/F data for Day 18 (Panels A, B, C) or Day 15 (Panel D). Per protocol CL/F was analyzed by panel, dose, dosing regimen; based on dosing, some arms weren't applicable to some timepoints, shown by 0 participants analyzed. The 4 mg, 8 mg, 12 mg, 16 mg, 20 mg (Panels A, B, C), 8 mg, 16 mg, 24 mg, 36 mg (Panel D) arms weren't applicable to the CL/F timepoints; per protocol these arms and placebo arms were excluded.
Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Arm/Group Description Healthy participants received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD from Days 1-18. In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 11, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 36 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 48 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15
Measure Participants 0 0 0 0 0 10 0 0 0 0 0 0 10 0 0 0 0 0 0 7 0 0 0 0 0 11 0
Day 15
3.65
(66.5)
Day 18
4.63
(59.6)
2.36
(38.3)
3.32
(30.8)
8. Secondary Outcome
Title Apparent Volume of MK-8189 Distribution (Vd/F) on Day 18 (Panels A, B, C) and Day 15 (Panel D)
Description Vd/F was the apparent volume of distribution of MK-8189 between the plasma and the rest of the body, after dose, assessed as the total volume of MK-8189 that would need to be uniformly distributed to achieve the desired plasma drug concentration. To estimate Vd/F, per protocol blood samples were collected 2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 for Panels A, B, C, and on Day 15 for Panel D. Per protocol Vd/F was analyzed by panel, dose and dosing regimen. Due to differing dosing regimen, some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg, 12 mg, 16 mg, 20 mg (Panels A, B, C), 8 mg, 16 mg, 24 mg, 36 mg (Panel D) study arms weren't applicable to the protocol-specified timepoints/days of Vd/F analysis and were excluded. GCV was reported as a percent. Per protocol placebo arms were excluded from Vd/F analysis.
Time Frame 2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 (Panel A, B, C) and Day 15 (Panel D)

Outcome Measure Data

Analysis Population Description
All participants who got ≥1 dose of MK-8189, had Vd/F data for Day 18 (Panels A, B, C) or Day 15 (Panel D). Per protocol Vd/F was analyzed by panel, dose, dosing regimen; based on dosing, some arms weren't applicable to some timepoints, shown by 0 participants analyzed. The 4 mg, 8 mg, 12 mg, 16 mg, 20 mg (Panels A, B, C), 8 mg, 16 mg, 24 mg, 36 mg (Panel D) arms weren't applicable to the Vd/F timepoints; per protocol these arms and placebo arms were excluded.
Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Arm/Group Description Healthy participants received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD from Days 1-18. In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 11, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 36 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 48 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15
Measure Participants 0 0 0 0 0 10 0 0 0 0 0 0 10 0 0 0 0 0 0 7 0 0 0 0 0 10 0
Day 15
47.1
(48.0)
Day 18
50.7
(48.6)
37.2
(35.1)
43.6
(39.1)
9. Secondary Outcome
Title Time Required for Plasma Concentration of MK-8189 to Decrease by Half (Apparent Terminal Half-life [t1/2]) on Day 18 (Panels A, B, C) and Day 15 (Panel D)
Description t1/2 was the time required to divide the plasma concentration of MK-8189 by half after reaching pseudo-equilibrium. At least three quantifiable terminal phase concentrations collected were used to calculate t1/2. To estimate t1/2, per protocol blood samples were collected 2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 for Panels A, B, C, and on Day 15 for Panel D. Per protocol t1/2 was analyzed by panel, dose and dosing regimen. Due to differing dosing regimen, some arms/doses weren't applicable to some timepoints, shown by 0 participants analyzed in the table. Per dosing regimen, the 4 mg, 8 mg, 12 mg, 16 mg, 20 mg (Panels A, B, C), 8 mg, 16 mg, 24 mg, 36 mg (Panel D) study arms weren't applicable to the protocol-specified timepoints/days of t1/2 analysis and were excluded. GCV was reported as a percent. Per protocol placebo arms were excluded from t1/2 analysis.
Time Frame 2, 6, 8, 10, 12, 16, 24, 36, 48 hours post-dose on Day 18 (Panel A, B, C) and Day 15 (Panel D)

Outcome Measure Data

Analysis Population Description
All participants who got ≥1 dose of MK-8189, had t1/2 data for Day 18 (Panels A, B, C) or Day 15 (Panel D). Per protocol t1/2 was analyzed by panel, dose, dosing regimen; based on dosing, some arms weren't applicable to some timepoints, shown by 0 participants analyzed. The 4 mg, 8 mg, 12 mg, 16 mg, 20 mg (Panels A, B, C), 8 mg, 16 mg, 24 mg, 36 mg (Panel D) arms weren't applicable to the t1/2 timepoints; per protocol these arms and placebo arms were excluded.
Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Arm/Group Description Healthy participants received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD from Days 1-18. In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 11, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 36 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 48 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15
Measure Participants 0 0 0 0 0 10 0 0 0 0 0 0 10 0 0 0 0 0 0 7 0 0 0 0 0 10 0
Day 15
8.25
(20.0)
Day 18
7.60
(29.7)
10.9
(25.5)
9.10
(19.2)

Adverse Events

Time Frame Serious AEs, Non-serious AEs: Up to ~32 Days, All-cause mortality: Up to ~21 months
Adverse Event Reporting Description Safety was analyzed by panel and by dose, in all participants who received at least one dose of the study drug.
Arm/Group Title Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Arm/Group Description Healthy participants received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Healthy participants received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Healthy participants received MK-8189 monotherapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-18 In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 4 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 8 mg starting on Day 4 and continuing up to Day 11, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 12 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 16 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 20 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy orally QD at a dose of 24 mg starting on Day 16 and continuing up to Day 18, based on participant tolerability In addition to background AAP treatment, participants with Schizophrenia received MK-8189 add-on therapy matching placebo orally QD on Days 1-18 Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 8 mg starting on Day 1 and continuing up to Day 3, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 16 mg starting on Day 4 and continuing up to Day 6, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 24 mg starting on Day 7 and continuing up to Day 9, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 36 mg starting on Day 10 and continuing up to Day 12, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy orally QD at a dose of 48 mg starting on Day 13 and continuing up to Day 15, based on participant tolerability Participants with Schizophrenia received MK-8189 monotherapy matching placebo orally QD on Days 1-15
All Cause Mortality
Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 0/12 (0%) 0/12 (0%) 0/11 (0%) 0/11 (0%) 0/10 (0%) 0/10 (0%) 0/4 (0%) 0/12 (0%) 0/11 (0%) 0/11 (0%) 0/11 (0%) 0/10 (0%) 0/10 (0%) 0/4 (0%) 0/13 (0%) 0/11 (0%) 0/10 (0%) 0/8 (0%) 0/7 (0%) 0/7 (0%) 0/4 (0%) 0/17 (0%) 0/16 (0%) 0/15 (0%) 0/13 (0%) 0/11 (0%) 0/9 (0%)
Serious Adverse Events
Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 0/12 (0%) 0/12 (0%) 0/11 (0%) 0/11 (0%) 0/10 (0%) 0/10 (0%) 0/4 (0%) 0/12 (0%) 0/11 (0%) 0/11 (0%) 0/11 (0%) 0/10 (0%) 0/10 (0%) 0/4 (0%) 0/13 (0%) 0/11 (0%) 0/10 (0%) 0/8 (0%) 0/7 (0%) 0/7 (0%) 0/4 (0%) 0/17 (0%) 0/16 (0%) 0/15 (0%) 1/13 (7.7%) 0/11 (0%) 0/9 (0%)
Psychiatric disorders
Psychotic disorder 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 0/9 (0%) 0
Other (Not Including Serious) Adverse Events
Panel A (Healthy Participants): MK-8189 Monotherapy 4 mg Panel A (Healthy Participants): MK-8189 Monotherapy 8 mg Panel A (Healthy Participants): MK-8189 Monotherapy 12 mg Panel A (Healthy Participants): MK-8189 Monotherapy 16 mg Panel A (Healthy Participants): MK-8189 Monotherapy 20 mg Panel A (Healthy Participants): MK-8189 Monotherapy 24 mg Panel A (Healthy Participants): Placebo Monotherapy Panel B (Schizophrenia Participants): MK-8189 Monotherapy 4 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 12 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 20 mg Panel B (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel B (Schizophrenia Participants): Placebo Monotherapy Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 4 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 8 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 12 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 16 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 20 mg Panel C (Schizophrenia Participants): MK-8189 Add-on Therapy 24 mg Panel C (Schizophrenia Participants): Placebo Add-on Therapy Panel D (Schizophrenia Participants): MK-8189 Monotherapy 8 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 16 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 24 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 36 mg Panel D (Schizophrenia Participants): MK-8189 Monotherapy 48 mg Panel D (Schizophrenia Participants): Placebo Monotherapy
Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
Total 5/12 (41.7%) 3/12 (25%) 4/11 (36.4%) 5/11 (45.5%) 2/10 (20%) 5/10 (50%) 3/4 (75%) 4/12 (33.3%) 3/11 (27.3%) 4/11 (36.4%) 8/11 (72.7%) 5/10 (50%) 7/10 (70%) 4/4 (100%) 6/13 (46.2%) 8/11 (72.7%) 5/10 (50%) 5/8 (62.5%) 4/7 (57.1%) 4/7 (57.1%) 1/4 (25%) 8/17 (47.1%) 8/16 (50%) 5/15 (33.3%) 4/13 (30.8%) 8/11 (72.7%) 9/9 (100%)
Cardiac disorders
Atrial fibrillation 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Palpitations 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 1/10 (10%) 1 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/10 (10%) 1 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 1/13 (7.7%) 1 1/11 (9.1%) 1 0/9 (0%) 0
Postural orthostatic tachycardia syndrome 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 1/7 (14.3%) 1 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Eye disorders
Asthenopia 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Eye irritation 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 1/7 (14.3%) 1 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Gastrointestinal disorders
Abdominal discomfort 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 1/10 (10%) 1 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 1/4 (25%) 1 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Abdominal distension 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 2
Abdominal pain lower 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/10 (10%) 1 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Abdominal pain upper 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/10 (10%) 1 0/4 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 1/7 (14.3%) 1 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/9 (0%) 0
Constipation 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 3/11 (27.3%) 3 2/10 (20%) 2 0/10 (0%) 0 1/4 (25%) 1 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/8 (12.5%) 1 0/7 (0%) 0 1/7 (14.3%) 1 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Diarrhoea 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/10 (10%) 1 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 1/7 (14.3%) 1 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Dry mouth 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 1/4 (25%) 1 0/17 (0%) 0 0/16 (0%) 0 1/15 (6.7%) 1 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Dyspepsia 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 1/12 (8.3%) 1 1/11 (9.1%) 1 0/11 (0%) 0 0/11 (0%) 0 1/10 (10%) 1 0/10 (0%) 0 0/4 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 1/7 (14.3%) 1 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 0/9 (0%) 0
Gastrooesophageal reflux disease 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/10 (10%) 1 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Gingival pain 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/9 (0%) 0
Glossodynia 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Nausea 0/12 (0%) 0 0/12 (0%) 0 1/11 (9.1%) 1 0/11 (0%) 0 1/10 (10%) 1 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 1/10 (10%) 1 0/10 (0%) 0 1/4 (25%) 1 0/13 (0%) 0 1/11 (9.1%) 1 1/10 (10%) 1 0/8 (0%) 0 1/7 (14.3%) 1 0/7 (0%) 0 0/4 (0%) 0 1/17 (5.9%) 1 1/16 (6.3%) 1 0/15 (0%) 0 1/13 (7.7%) 1 2/11 (18.2%) 2 1/9 (11.1%) 1
Paraesthesia oral 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 1/15 (6.7%) 1 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Salivary hypersecretion 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 1/16 (6.3%) 1 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Tongue dry 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/9 (0%) 0
Toothache 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Vomiting 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/10 (10%) 1 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 1/10 (10%) 1 0/8 (0%) 0 1/7 (14.3%) 1 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 1/13 (7.7%) 1 1/11 (9.1%) 1 0/9 (0%) 0
General disorders
Chest discomfort 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/10 (10%) 1 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Chest pain 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/10 (10%) 1 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/10 (10%) 1 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 1/16 (6.3%) 1 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Fatigue 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/10 (10%) 1 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 2 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 1/17 (5.9%) 1 1/16 (6.3%) 1 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Feeling hot 0/12 (0%) 0 0/12 (0%) 0 1/11 (9.1%) 1 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 1/7 (14.3%) 1 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Feeling of body temperature change 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 1/16 (6.3%) 1 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Non-cardiac chest pain 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 0/9 (0%) 0
Vessel puncture site pain 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/10 (10%) 1 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Infections and infestations
Nasopharyngitis 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Injury, poisoning and procedural complications
Skin abrasion 1/12 (8.3%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Skin laceration 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/10 (10%) 1 1/10 (10%) 1 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Investigations
Blood pressure increased 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/10 (10%) 1 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Orthostatic heart rate response increased 0/12 (0%) 0 0/12 (0%) 0 1/11 (9.1%) 1 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Metabolism and nutrition disorders
Decreased appetite 2/12 (16.7%) 2 1/12 (8.3%) 1 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 2/13 (15.4%) 2 2/11 (18.2%) 2 1/10 (10%) 1 0/8 (0%) 0 1/7 (14.3%) 1 0/7 (0%) 0 0/4 (0%) 0 1/17 (5.9%) 1 0/16 (0%) 0 0/15 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 0/9 (0%) 0
Musculoskeletal and connective tissue disorders
Arthralgia 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 1/4 (25%) 2 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Back pain 0/12 (0%) 0 1/12 (8.3%) 1 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/10 (10%) 1 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 1/4 (25%) 1 0/17 (0%) 0 1/16 (6.3%) 1 2/15 (13.3%) 2 0/13 (0%) 0 1/11 (9.1%) 1 2/9 (22.2%) 2
Flank pain 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 1/16 (6.3%) 1 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Muscle spasms 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/10 (10%) 1 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Muscle tightness 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/9 (0%) 0
Muscle twitching 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 1/7 (14.3%) 1 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Musculoskeletal pain 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/9 (0%) 0
Neck pain 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 1/12 (8.3%) 1 0/11 (0%) 0 2/11 (18.2%) 2 0/11 (0%) 0 1/10 (10%) 1 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Pain in extremity 0/12 (0%) 0 0/12 (0%) 0 1/11 (9.1%) 1 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/9 (0%) 0
Nervous system disorders
Akathisia 1/12 (8.3%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 1/13 (7.7%) 1 1/11 (9.1%) 1 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 1/17 (5.9%) 1 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Dizziness 1/12 (8.3%) 1 0/12 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 2/10 (20%) 2 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 1/13 (7.7%) 1 2/11 (18.2%) 2 1/10 (10%) 1 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 1/4 (25%) 1 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 3/11 (27.3%) 3 0/9 (0%) 0
Dyskinesia 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/9 (0%) 0
Dystonia 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 1/9 (11.1%) 1
Extrapyramidal disorder 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 1/9 (11.1%) 1
Head discomfort 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 1/11 (9.1%) 1 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Headache 0/12 (0%) 0 0/12 (0%) 0 2/11 (18.2%) 2 4/11 (36.4%) 4 0/10 (0%) 0 3/10 (30%) 3 1/4 (25%) 1 0/12 (0%) 0 2/11 (18.2%) 2 2/11 (18.2%) 2 2/11 (18.2%) 2 1/10 (10%) 1 3/10 (30%) 4 1/4 (25%) 1 0/13 (0%) 0 2/11 (18.2%) 2 0/10 (0%) 0 2/8 (25%) 2 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 1/17 (5.9%) 1 3/16 (18.8%) 3 2/15 (13.3%) 2 1/13 (7.7%) 1 0/11 (0%) 0 2/9 (22.2%) 2
Hypoaesthesia 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 1/9 (11.1%) 1
Paraesthesia 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 1/7 (14.3%) 1 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Parosmia 1/12 (8.3%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 1/7 (14.3%) 1 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Somnolence 0/12 (0%) 0 1/12 (8.3%) 1 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/10 (10%) 1 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 4/17 (23.5%) 4 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Syncope 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/10 (10%) 1 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Tremor 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 1/7 (14.3%) 1 1/7 (14.3%) 1 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/9 (0%) 0
Psychiatric disorders
Anxiety 1/12 (8.3%) 1 0/12 (0%) 0 1/11 (9.1%) 1 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 1/12 (8.3%) 2 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 3/10 (30%) 3 0/4 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 1/10 (10%) 1 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 4/16 (25%) 4 2/15 (13.3%) 2 0/13 (0%) 0 2/11 (18.2%) 2 1/9 (11.1%) 1
Dissociation 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 2 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Insomnia 1/12 (8.3%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 2/10 (20%) 2 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 2/11 (18.2%) 2 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/13 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 1/4 (25%) 1 1/17 (5.9%) 1 0/16 (0%) 0 0/15 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 1/9 (11.1%) 1
Nightmare 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 1/15 (6.7%) 1 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Panic attack 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 2 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Paranoia 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/8 (12.5%) 1 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 1/15 (6.7%) 1 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Psychotic disorder 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 2 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 1/16 (6.3%) 1 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Restlessness 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 1/10 (10%) 1 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 1/8 (12.5%) 1 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 1/16 (6.3%) 1 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Tic 1/12 (8.3%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Reproductive system and breast disorders
Breast tenderness 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/10 (10%) 1 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Dysmenorrhoea 0/12 (0%) 0 0/12 (0%) 0 1/11 (9.1%) 1 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 1/12 (8.3%) 1 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 2/9 (22.2%) 2
Vulvovaginal pruritus 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 1/16 (6.3%) 1 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Respiratory, thoracic and mediastinal disorders
Dyspnoea 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Epistaxis 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 0/9 (0%) 0
Hyperventilation 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Oropharyngeal pain 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Throat irritation 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 1/11 (9.1%) 1 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Skin and subcutaneous tissue disorders
Dermatitis 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 1/16 (6.3%) 1 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Dermatitis contact 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 2/17 (11.8%) 2 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 3/9 (33.3%) 3
Dry skin 0/12 (0%) 0 1/12 (8.3%) 1 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 1/4 (25%) 1 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Pruritus 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 1/4 (25%) 1 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 1/13 (7.7%) 1 0/11 (0%) 0 0/9 (0%) 0
Rash 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 1/9 (11.1%) 1
Skin lesion 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/8 (0%) 0 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 1/16 (6.3%) 1 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Vascular disorders
Hypertension 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/8 (12.5%) 1 0/7 (0%) 0 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0
Orthostatic hypotension 0/12 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/12 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 0/10 (0%) 0 0/4 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/10 (0%) 0 1/8 (12.5%) 1 1/7 (14.3%) 1 0/7 (0%) 0 0/4 (0%) 0 0/17 (0%) 0 0/16 (0%) 0 0/15 (0%) 0 0/13 (0%) 0 0/11 (0%) 0 0/9 (0%) 0

Limitations/Caveats

[Not Specified]

More Information

Certain Agreements

Principal Investigators are NOT employed by the organization sponsoring the study.

The investigator agrees to submit all manuscripts or abstracts to the Sponsor before submission. This allows the Sponsor to protect proprietary information and to provide comments.

Results Point of Contact

Name/Title Senior Vice President, Global Clinical Development
Organization Merck Sharp & Dohme Corp.
Phone 1-800-672-6372
Email ClinicalTrialsDisclosure@merck.com
Responsible Party:
Merck Sharp & Dohme LLC
ClinicalTrials.gov Identifier:
NCT03565068
Other Study ID Numbers:
  • 8189-007
  • MK-8189-007
First Posted:
Jun 21, 2018
Last Update Posted:
Mar 29, 2021
Last Verified:
Mar 1, 2021