A Study of MK-7145 Compared to Placebo and Hydrochlorothiazide for Lowering Blood Pressure in Male Participants With Hypertension (MK-7145-009)
Condition: Hypertension
MeSH terms: Hypertension
Intervention: MK-7145; Hydrochlorothiazide (HCTZ); Placebo to MK-7145; Placebo to HCTZ
Intervention MeSH terms: Hydrochlorothiazide
Phase: Phase 1
Study type: Interventional
Primary purpose: Treatment
Allocation: Randomized
Intervention model: Crossover Assignment
Masking: Double
Enrollment: 46.0
Sex: Male
Minimum age: 18 Years
Maximum age: 75 Years
Healthy volunteers: No

Summary:

      This study is being done to evaluate the antihypertensive efficacy and tolerability of
      MK-7145 in participants with mild-to-moderate hypertension.

      The primary hypotheses for the study were as follows:

        1. Multiple dose administration of 6-mg MK-7145 results in a reduction in systolic blood
           pressure (SBP) in male participants with mild to moderate hypertension that is superior
           to placebo, as measured by time weighted average change from baseline over 24 hours
           postdose (TWA0-24hrs) on dosing Day 28

        2. Multiple dose administration of 6-mg MK-7145 results in a reduction in SBP in male
           participants with mild to moderate hypertension that is similar to hydrochlorothiazide
           (HCTZ), as measured by TWA0-24hrs on dosing Day 28

        3. The effect of MK-7145 and HCTZ on natriuresis (UNaV) as well as SBP and diastolic blood
           pressure (DBP), both as measured by TWA0-24hrs, will be estimated

        4. Multiple dose administration of MK-7145 for 4 weeks will be generally safe and
           well-tolerated.
    

Eligibility criteria:

        Inclusion criteria:

          -  Diagnosis of essential hypertension

          -  Body mass index (BMI) ≤35 kg/m^2

          -  Participant in general good health

          -  No history of clinically significant arrhythmias or clinically significant abnormality
             on electrocardiogram (ECG)

          -  No history of clinically significant cardiac disease

          -  Treatment-naïve or taking up to 2 antihypertensive therapeutic agents

          -  Non-smoker and/or has not used nicotine or nicotine-containing products for at least 6
             months

        Exclusion criteria:

          -  Participant has low plasma potassium

          -  History of stroke, chronic seizures, or major neurological disorder

          -  History of clinically significant endocrine, gastrointestinal, cardiovascular,
             hematological, hepatic, immunological, renal, respiratory, or genitourinary
             abnormalities or diseases

          -  History of osteoporosis

          -  Active or history of nephrocalcinosis, nephrolithiasis or hypercalciuria

          -  Orthostatic change in vital sign measurements while going from a semi-recumbent to
             standing position accompanied by symptoms

          -  Functional disability that can interfere with rising from a semi-recumbent position to
             the standing position

          -  History of malignant neoplastic disease. Exceptions: (1) adequately treated
             non-melanomatous skin carcinoma; (2) other malignancies which have been successfully
             treated >10 years prior to the prestudy (screening) visit, (3) unlikely to sustain a
             recurrence

          -  Participant is unable to refrain from the use of prescription and non-prescription
             drugs such as high-dose aspirin (≥325 mg/day), strong/moderate Cytochrome P450 3A4
             (CYP3A4) inhibitors (such as ritonavir, indinavir, nelfinavir, erythromycin,
             telithromycin, clarithromycin, chloramphenicol, fluconazole, ketoconazole,
             itraconazole, nefazodone, aprepitant, verapamil, or diltiazem) as well as
             strong/moderate CYP3A4 inducers (such as phenytoin, carbamazepine, oxcarbazepine,
             phenobarbital, efavirenz, nevirapine, etravirine, rifampicin, modafinil, St Johns
             Wort, cyproterone, or progestin) beginning approximately 2 weeks (or 5 half-lives),
             prior to administration of the initial dose of study drug until the post study visit

          -  Current use of non-steroidal anti-inflammatory drugs (NSAIDs) other than low dose
             aspirin, aluminum- or magnesium-containing antacids, sucralfate, metal cations such as
             iron, multivitamins containing iron or zinc that cannot be discontinued at least 2
             weeks (or 5 half-lives) prior to administration of the initial dose of study drug
             until the post study visit

          -  Consumption of excessive amounts of alcohol, defined as greater than 3 glasses of
             alcoholic beverages (1 glass is approximately equivalent to: beer [284 mL/10 ounces],
             wine [125 mL/4 ounces], or distilled spirits [25 mL/1 ounce]) per day

          -  Participant consumes excessive amounts, defined as greater than 6 servings (1 serving
             is approximately equivalent to 120 mg of caffeine) of coffee, tea, cola, or other
             caffeinated beverages per day

          -  Major surgery, donation or lost 1 unit of blood (approximately 500 mL), or
             participation in another investigational study within 4 weeks prior to the prestudy
             (screening)

          -  History of significant multiple and/or severe allergies (including latex allergy), or
             has had an anaphylactic reaction or significant intolerability to prescription or
             non-prescription drugs or food

          -  Regular use of any illicit drugs or history of drug abuse within approximately 6
             months

          -  Dehydration or volume-depletion