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CompletedNCT02849184Super1Updated Aug 5, 2019Results posted

To Compare the Effectiveness of Suvorexant vs Placebo on Sleep Pressure in Hypertensives With Insomnia

A Phase 4 interventional study of suvorexant and Placebo in Hypertension and Insomnia, sponsored by Jichi Medical University. Completed at 3 sites in Japan. Open to participants aged 20 Years and older. Per ClinicalTrials.gov, last updated 2019-08-05.

Sponsored by Jichi Medical University · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
82
Allocation
Randomized
Ages
20 Years and older
Sex
All
01

Study summary

The purpose of this study is to compare the effectiveness and safety of suvorexant versus placebo on sleep pressure and circadian rhythm in hypertensives with insomnia.

Read the detailed description

The study consists of a 4-week run-in period and a 2-week treatment period.

02

Conditions studied

  • Hypertension
  • Insomnia
03

In context

Sleep Initiation and Maintenance Disorders

1,856 studies on the registry are indexed under Sleep Initiation and Maintenance Disorders; 594 are open to participants now.

This study's enrollment of 82 is above the median of 73 across 1,631 interventional studies indexed under Sleep Initiation and Maintenance Disorders.

Browse Sleep Initiation and Maintenance Disorders studies →

Lead sponsor

Jichi Medical University is the lead sponsor of 8 studies on the registry; none are open to participants now.

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

04

Who can participate

Ages eligible
20 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

[At interim registration]

Patients who meet the following criteria are eligible for the study:

  1. Patients who give written consent of agreement to voluntarily participation in the clinical study
  2. Age 20 years or older
  3. Sex: Male or female
  4. Treatment classification: Outpatient
  5. Hypertensive patient who meet at least one of the following:

    • Under antihypertensive medications
    • Clinic systolic blood pressure (SBP) less than 160 mmHg
  6. Patients with insomnia who meet at least one of the following:

    • Patients with any one of the following symptoms twice a week or more and at least 1 month-continuation: difficulty initiating sleep (time to sleep onset 2 hours or more longer than usual), difficulty maintaining sleep (awakening twice or more in the night), early morning awakening (awakening 2 hours or more earlier in the morning than usual), difficulty sleeping deeply (no soundly asleep feeling at the time of awakening in the morning).

      b. Patients with interference with social or occupational function due to the above insomnia symptoms

[At official registration]

Patients who meet the following criteria at the end of run-in period are eligible for the study:

  1. Stable unchanged antihypertensive medication for run-in period.
  2. Average morning home SBP more than 135 mmHg during 5 days before the end of run-in period.

Exclusion criteria

Exclusion Criteria:

  1. Patients with serious liver disease.
  2. Patients with serious respiratory disease.
  3. Patients with secondary hypertension
  4. Patients with sleep apnea syndrome
  5. Patients with history of narcolepsy or cataplexy
  6. Patients with history of organic cerebral disorders
  7. Patients with history of hypersensitivity to suvorexant
  8. Patients received CYP3A strongly-inhibitors including itraconazole, clarithromycin and ritonavir, saquinavir, nelfinavir, indinavir, telaprevir and voriconazole at the start of the run-in period
  9. Patients with average clinic SBP of 160 mmHg or more at the start of the run-in period
  10. Patients received suvorexant and other hypnotic at the start of the run-in period on a regular basis
  11. Patients who are breast-feeding, pregnant, possibly pregnant, or plan to become pregnant
  12. Patients who are considered not to be eligible for this study by their investigator or sub-investigator
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
82 participants (actual)

Study arms

  • Experimental
    suvorexant

    Suvorexant (20mg for 64 years or younger; 15mg for 65 years or older) in oral administration, once daily before bedtime; Treatment duration: 2 weeks

    Drug: suvorexant

  • Placebo comparator
    placebo

    Placebo in oral administration, once daily before bedtime; Treatment duration: 2 weeks.

    Other: Placebo

Interventions

  • Drugsuvorexant

    Suvorexant (20mg for 64 years or younger; 15mg for 65 years or older) once daily before bedtime.

    Also known as: Belsomra

  • OtherPlacebo

    Placebo once daily before bedtime.

06

What researchers measure

Primary outcomes

  1. Change in Sleep Systolic Blood Pressure

    To compare the efficacy of suvorexant versus placebo on sleep systolic blood pressure (SBP) by ambulatory blood pressure monitoring (ABPM). Change: sleep SBP value at 2 weeks minus value at baseline

    Time frame: 2 weeks

Secondary outcomes

  1. Change in Morning Systolic Blood Pressure Variability

    To compare the efficacy of suvorexant versus placebo on morning SBP variability by ABPM Variability: SD Change: value at 2 weeks minus value at baseline

    Time frame: 2 weeks

  2. Changes in the Total Sleep Time

    Total sleep time was assessed using a sleep diary. Value at week 2 - Value at week 0

    Time frame: 2 weeks

  3. Changes in the Time to Sleep Onset

    Time to sleep onset was assessed using a sleep diary. Value at week 2 - Value at week 0

    Time frame: 2 weeks

  4. Change in Nighttime SBP in Patients Achieved High Sleep Satisfaction

    nighttime BPs are measured by ambulatory blood pressure monitoring. Sleep quality is measured by self-reported sleep diary (satisfaction level of sleep) at 2 weeks. Patients are divided by sleep satisfaction and compared nighttime SBP change (value at 2 weeks minus value at baseline).

    Time frame: 2 weeks

  5. Change in Urinary Albumin-to-creatinine Ratio (UACR)

    Percentage change in UACR from baseline to 2 weeks

    Time frame: 2 weeks

  6. Change in Nighttime SBP in Patients Achieved Low Sleep Satisfaction

    nighttime BPs are measured by ambulatory blood pressure monitoring. Sleep quality is measured by self-reported sleep diary (satisfaction level of sleep) at 2weeks. Patients are divided by sleep satisfaction and compared nighttime SBP change (value at 2 weeks minus value at baseline).

    Time frame: 2 weeks

  7. Change in NT-proBNP

    Percentage change in NT-proBNP from baseline to 2 weeks

    Time frame: 2 weeks

07

Results

Posted Aug 5, 2019

Participant flow

Participant flow — Overall Study
MilestoneSuvorexantPlacebo
Started4042
Completed4042
Not completed00

Outcome measures

PrimaryChange in Sleep Systolic Blood Pressure

To compare the efficacy of suvorexant versus placebo on sleep systolic blood pressure (SBP) by ambulatory blood pressure monitoring (ABPM). Change: sleep SBP value at 2 weeks minus value at baseline

Time frame:
2 weeks
Reported as:
Mean · mmHg
Change in Sleep Systolic Blood Pressure
mmHgSuvorexantPlacebo
Change in Sleep Systolic Blood Pressure-1.8 ± 2.7-4.4 ± 2.7
SecondaryChange in Morning Systolic Blood Pressure Variability

To compare the efficacy of suvorexant versus placebo on morning SBP variability by ABPM Variability: SD Change: value at 2 weeks minus value at baseline

Time frame:
2 weeks
Reported as:
Mean · mmHg
Change in Morning Systolic Blood Pressure Variability
mmHgSuvorexantPlacebo
Change in Morning Systolic Blood Pressure Variability-0.3 ± 1.50.8 ± 1.5
SecondaryChanges in the Total Sleep Time

Total sleep time was assessed using a sleep diary. Value at week 2 - Value at week 0

Time frame:
2 weeks
Reported as:
Mean · hours
Changes in the Total Sleep Time
hoursSuvorexantPlacebo
Changes in the Total Sleep Time0.51 ± 0.240.43 ± 0.25
SecondaryChanges in the Time to Sleep Onset

Time to sleep onset was assessed using a sleep diary. Value at week 2 - Value at week 0

Time frame:
2 weeks
Reported as:
Mean · hours
Changes in the Time to Sleep Onset
hoursSuvorexantPlacebo
Changes in the Time to Sleep Onset-0.23 ± 0.18-0.42 ± 0.15
SecondaryChange in Nighttime SBP in Patients Achieved High Sleep Satisfaction

nighttime BPs are measured by ambulatory blood pressure monitoring. Sleep quality is measured by self-reported sleep diary (satisfaction level of sleep) at 2 weeks. Patients are divided by sleep satisfaction and compared nighttime SBP change (value at 2 weeks minus value at baseline).

Time frame:
2 weeks
Reported as:
Mean · mmHg
Change in Nighttime SBP in Patients Achieved High Sleep Satisfaction
mmHgSuvorexantPlacebo
Change in Nighttime SBP in Patients Achieved High Sleep Satisfaction-6.1 ± 3.53.1 ± 4.2
SecondaryChange in Urinary Albumin-to-creatinine Ratio (UACR)

Percentage change in UACR from baseline to 2 weeks

Time frame:
2 weeks
Reported as:
Median · percentage change
Change in Urinary Albumin-to-creatinine Ratio (UACR)
percentage changeSuvorexantPlacebo
Change in Urinary Albumin-to-creatinine Ratio (UACR)1.50 (-15.18 to 21.45)-13.12 (-27.22 to 3.71)
SecondaryChange in Nighttime SBP in Patients Achieved Low Sleep Satisfaction

nighttime BPs are measured by ambulatory blood pressure monitoring. Sleep quality is measured by self-reported sleep diary (satisfaction level of sleep) at 2weeks. Patients are divided by sleep satisfaction and compared nighttime SBP change (value at 2 weeks minus value at baseline).

Time frame:
2 weeks
Reported as:
Mean · mmHg
Change in Nighttime SBP in Patients Achieved Low Sleep Satisfaction
mmHgSuvorexantPlacebo
Change in Nighttime SBP in Patients Achieved Low Sleep Satisfaction4.5 ± 3.9-9.5 ± 3.1
SecondaryChange in NT-proBNP

Percentage change in NT-proBNP from baseline to 2 weeks

Time frame:
2 weeks
Reported as:
Median · percentage change
Change in NT-proBNP
percentage changeSuvorexantPlacebo
Change in NT-proBNP3.65 (-13.90 to 24.77)-2.80 (-19.06 to 16.72)

Adverse events

Collected over 14 months. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Suvorexant0/40 (0%)0/40 (0%)0/40 (0%)
Placebo0/42 (0%)0/42 (0%)0/42 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)SuvorexantPlaceboTotal
Mean57.3 ± 12.155.9 ± 9.556.6 ± 10.8
Sex: Female, Male
Sex: Female, Male(Participants)SuvorexantPlaceboTotal
Female111324
Male292958
Race and Ethnicity Not Collected
Race and Ethnicity Not Collected(Participants)SuvorexantPlaceboTotal
Count of participants——0
BMI
BMI(kg/m^2)SuvorexantPlaceboTotal
Mean25.5 ± 4.425.9 ± 3.925.7 ± 4.1
Nighttime systolic blood pressure
Nighttime systolic blood pressure(mmHg)SuvorexantPlaceboTotal
Mean137.9 ± 15.9140.7 ± 18.1139.4 ± 17.0
Nighttime diastolic blood pressure
Nighttime diastolic blood pressure(mmHg)SuvorexantPlaceboTotal
Mean80.5 ± 8.784.2 ± 10.282.4 ± 9.6
08

Study locations

3 sites
  • Takahira Internal Medicine Clinic
    Fukuoka, Japan
  • Yamasaki family clinic
    Hyogo, Japan
  • Yagi hospital
    Tokyo, Japan
09

References and documents

Study documents

  • Protocol and statistical analysis plan · Jun 10, 2016

Documents are hosted by the registry — open the source record to download them.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 5, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02849184
Lead sponsor
Jichi Medical University
Collaborators
Merck Sharp & Dohme LLC, Satt Co.,Ltd
Responsible party
Kazuomi Kario (Professor & Chairman, Division of Cardiovascular Medicine, Department of Medicine, Jichi Medical University) — Principal investigator
First posted
Jul 29, 2016
Start date
Jan 17, 2017
Primary completion
Oct 2017
Completion
Mar 2018
Results posted
Aug 5, 2019
Last update
Aug 5, 2019

Study contacts

Kazuomi Kario, MD, PhD
principal investigator · Jichi Medical University School of Medicine

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Jun 2019. You cannot join it, but the record below documents what was studied.

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