A Rising Single Dose Study of the Safety, Tolerability, Pharmacokinetics (PK) and Pharmacodynamics of MK-8892 (MK-8892-001)
Condition: Pulmonary Arterial Hypertension
MeSH terms: Pulmonary Arterial Hypertension
Intervention: MK-8892; Placebo for MK-8892
Phase: Phase 1
Study type: Interventional
Primary purpose: Treatment
Allocation: Randomized
Intervention model: Parallel Assignment
Masking: Double (Participant, Investigator)
Enrollment: 25.0
Sex: Male
Minimum age: 18 Years
Maximum age: 60 Years
Healthy volunteers: Accepts Healthy Volunteers

Summary:

      This study will evaluate safety, tolerability and effects on central diastolic blood pressure
      (cDBP) of MK-8892 given as single oral doses in healthy male participants (Panel A and B) and
      in male participants with mild-to-moderate hypertension (Panel C).
    

Eligibility criteria:

        Inclusion Criteria:

          -  Systolic blood pressure (SBP) > 110 and ≤ 140 mmHg for Panels A and B, SBP values of
             140-175 mmHg and diastolic blood pressure (DBP) of 90-105 mmHg on at least three
             different occasions at the prestudy (screening) visit for Panel C. Participants being
             treated with medication for their hypertension may be included as long as they are
             titrated off of their medication

          -  Body Mass Index (BMI) ≥ 18 kg/m^2 and ≤ 32 kg/m^2

          -  Healthy (with the exception of hypertensive subjects in Panel C)

          -  No clinically significant abnormality on electrocardiogram (ECG)

          -  No history of clinically significant cardiac disease

          -  No history of heart failure

          -  Nonsmoker and/or has not used nicotine or nicotine-containing products for at least 6
             months

        Exclusion Criteria:

          -  Mentally or legally incapacitated

          -  History of stroke, chronic seizures, or major neurological disorder

          -  History of clinically significant endocrine, gastrointestinal, cardiovascular (except
             mild to moderate hypertension), hematological, hepatic, immunological, renal,
             respiratory, or genitourinary abnormalities or diseases

          -  Functional disability that can interfere with rising from a sitting position to the
             standing position

          -  History of cancer (malignancy)

          -  History of significant multiple and/or severe allergies (e.g. food, drug, latex
             allergy), or has had an anaphylactic reaction or significant intolerability to
             prescription or nonprescription drugs or food

          -  Positive for hepatitis B, hepatitis C, or Human Immunodeficiency Virus (HIV)

          -  Has had major surgery, donated or lost 1 unit of blood or participated in another
             investigational study within 4 weeks

          -  Has participated in another investigational trial within 4 weeks

          -  Unable to refrain from or anticipates the use of any medication during the study

          -  Anticipates using medication for erectile dysfunction during the study

          -  Uses or anticipates using organic nitrates during the study (e.g. nitroglycerin,
             isosorbide mononitrate, isosorbide dinitrate, pentaerythritol)

          -  Anticipates using cytochrome P450 inhibitors (e.g. ketoconazole) or inducers (e.g.
             rifampin) during the study

          -  Consumes excessive amounts of alcohol, defined as greater than 3 glasses of alcoholic
             beverages per day

          -  Consumes excessive amounts, defined as greater than 6 servings of coffee, tea, cola,
             or other caffeinated beverages per day

          -  Regular user (including recreational user) of illicit drugs or has a history of drug
             (including alcohol) abuse within approximately 1 year