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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT04571944
Other study ID # 4305-085
Secondary ID MK-4305-085jRCT2
Status Completed
Phase Phase 3
First received
Last updated
Start date October 22, 2020
Est. completion date December 23, 2022

Study information

Verified date December 2023
Source Merck Sharp & Dohme LLC
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The goal of this study is to evaluate the efficacy and safety of suvorexant (MK-4305) for reducing the incidence of delirium in Japanese participants who are at high risk of delirium. The primary hypothesis is that suvorexant reduces the proportion of participants with delirium compared with placebo as assessed by the Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) criteria.


Recruitment information / eligibility

Status Completed
Enrollment 207
Est. completion date December 23, 2022
Est. primary completion date December 23, 2022
Accepts healthy volunteers No
Gender All
Age group 65 Years to 90 Years
Eligibility Inclusion Criteria: - Is hospitalized for (1) acute disease with severe disease state or decreased daily living function or (2) elective surgery requiring general anesthesia scheduled on the day after or 2 days after admission/Day 1 - Has (1) mild cognitive impairment or mild dementia and/or (2) a history of delirium in any prior hospitalization - Requires hospitalization for 6 days for acute disease, with treatment starting on day of admission; or 7 days, with treatment starting the day after admission OR - Requires hospitalization for 6 days for elective surgery scheduled on the day after admission; or for 7 days for elective surgery scheduled 2 days after admission - Is able to take study medications orally Exclusion Criteria: - Has moderate or severe dementia - Has a history of epilepsy or Parkinson's disease - Currently uses psychotropic agents or has a mental condition including schizophrenia, other mental disorders, bipolar disorder and major depression - Has a history of drug or alcohol abuse in the 5 years prior to start of study or has alcoholic disease such as alcoholic liver disease or gastritis alcoholic - Has a history of narcolepsy or cataplexy - Has used hypnotics, antipsychotics, mood stabilizers, antidepressants, anxiolytics, psychostimulants, anticonvulsants or tiapride within 2 weeks prior to randomization - Has delirium as assessed by DSM-5 or DRS-R-98 (total score =14.5) before the first dose of study medication

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Suvorexant
Suvorexant administered at a dose of 15 mg QD via oral tablet
Placebo
Suvorexant-matching placebo administered QD via oral tablet

Locations

Country Name City State
Japan Kansai Rosai Hospital ( Site 8550) Amagasaki Hyogo
Japan National Hospital Organization Kyushu Medical Center ( Site 8532) Fukuoka
Japan Fukuyama City Hospital ( Site 8528) Fukuyama Hiroshima
Japan Gifu Municipal Hospital ( Site 8555) Gifu
Japan Hiroshima City Hiroshima Citizens Hospital ( Site 8505) Hiroshima
Japan Kohnodai Hospital, National Center for Global Health and Medicine ( Site 8522) Ichikawa Chiba
Japan Iizuka Hospital ( Site 8540) Iizuka Fukuoka
Japan Shimane Prefectural Central Hospital ( Site 8530) Izumo Shimane
Japan Kanazawa Medical University Hospital ( Site 8514) Kahoku-gun Ishikawa
Japan National Hospital Organization Kanazawa Medical Center ( Site 8554) Kanazawa Ishikawa
Japan Kamitsuga General Hospital ( Site 8546) Kanuma Tochigi
Japan Nippon Medical School Musashi Kosugi Hospital ( Site 8502) Kawasaki Kanagawa
Japan Kagawa University Hospital ( Site 8519) Kita-gun Kagawa
Japan Kokura Memorial Hospital ( Site 8537) Kitakyushu Fukuoka
Japan National Hospital Organization Kumamoto Medical Center ( Site 8511) Kumamoto
Japan Japanese Red Cross Kyoto Daini Hospital ( Site 8533) Kyoto
Japan Kyoto Katsura Hospital ( Site 8539) Kyoto
Japan Maebashi Red Cross Hospital ( Site 8548) Maebashi Gunma
Japan National Hospital Organization Maizuru Medical Center ( Site 8535) Maizuru-shi Kyoto
Japan Aizawa Hospital ( Site 8542) Matsumoto Nagano
Japan Miyazaki Prefectural Miyazaki Hospital ( Site 8543) Miyazaki
Japan Matsushita Memorial Hospital ( Site 8556) Moriguchi Osaka
Japan Niigata City General Hospital ( Site 8544) Niigata
Japan Okayama Saiseikai General Hospital ( Site 8549) Okayama
Japan Okayama University Hospital ( Site 8510) Okayama
Japan Japan Community Health care Organization Osaka Hospital ( Site 8545) Osaka
Japan Japanese Red Cross Osaka Hospital ( Site 8523) Osaka
Japan National Hospital Organization Osaka National Hospital ( Site 8536) Osaka
Japan Nippon Life Hospital ( Site 8552) Osaka
Japan Osaka City General Hospital ( Site 8518) Osaka
Japan Osaka General Medical Center ( Site 8538) Osaka
Japan Saga-Ken Medical Centre Koseikan ( Site 8526) Saga
Japan SANO KOSEI GENERAL HOSPITAL ( Site 8551) Sano Tochigi
Japan Tonan Hospital ( Site 8512) Sapporo Hokkaido
Japan Jichi Medical University Hospital ( Site 8525) Shimotsuke Tochigi
Japan Osaka University Hospital ( Site 8524) Suita Osaka
Japan TAKAMATSU Red Cross Hospital ( Site 8547) Takamatsu Kagawa
Japan Tokushima Prefectural Central Hospital ( Site 8509) Tokushima
Japan Juntendo University Nerima Hospital ( Site 8501) Tokyo
Japan National Cancer Center Hospital ( Site 8520) Tokyo
Japan National Hospital Organization Tokyo Medical Center ( Site 8529) Tokyo
Japan Tokyo Medical and Dental University Hospital ( Site 8503) Tokyo
Japan Tokyo Women's Medical University Hospital ( Site 8527) Tokyo
Japan Toyonaka Municipal Hospital ( Site 8521) Toyonaka Osaka
Japan Yamaguchi University Hospital ( Site 8517) Ube Yamaguchi
Japan National Hospital Organization Yokohama Medical Center ( Site 8531) Yokohama Kanagawa
Japan Saiseikai Yokohamashi Nanbu Hospital ( Site 8541) Yokohama Kanagawa
Japan Showa University Northern Yokohama Hospital ( Site 8534) Yokohama Kanagawa
Japan Yokohama City University Hospital ( Site 8515) Yokohama Kanagawa
Japan Yokohama City University Medical Center ( Site 8516) Yokohama Kanagawa

Sponsors (1)

Lead Sponsor Collaborator
Merck Sharp & Dohme LLC

Country where clinical trial is conducted

Japan, 

Outcome

Type Measure Description Time frame Safety issue
Primary Percentage of Participants With Delirium as Assessed by Diagnostic and Statistical Manual of Mental Disorders, 5th Edition (DSM-5) Criteria The DSM-5 is the gold standard for the diagnosis of delirium. DSM-5 criteria were used for clinician assessment of delirium. The percentage of participants with delirium per DSM-5 criteria is presented. Up to ~8 days
Primary Number of Participants Who Experienced One or More Adverse Events (AEs) An AE is 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. The number of participants who experienced one or more AEs is presented. Up to ~21 days
Primary Number of Participants Who Discontinued Study Treatment Due to an AE An AE is 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. The number of participants who discontinued study treatment due to an AE is presented. Up to ~7 days
Secondary Maximum Daily Total Score on Delirium Rating Scale-Revised-98 (DRS-R-98) DRS-R-98 is a diagnostic and assessment tool used for evaluation of delirium. It is a 16-item clinician-rated scale with 13 items measuring delirium severity and 3 diagnostic items. The total DRS-R-98 score can range from 0 (lowest) to 46 (highest). Higher scores indicate worsening or more severe delirium. The maximum daily total score on DRS-R-98 is presented. Up to ~8 days
Secondary Percentage of Participants With Delirium as Assessed by DRS-R-98 DRS-R-98 is a diagnostic and assessment tool used for the evaluation of delirium. It is a 16-item clinician-rated scale with 13 items measuring delirium severity and 3 diagnostic items. The total DRS-R-98 score can range from 0 (lowest) to 46 (highest). Higher scores indicate worsening or more severe delirium. Optimized cutoff score for delirium diagnosis in Japanese-translated DRS-R-98 has been determined as =14.5. The percentage of participants with delirium as assessed by DRS-R-98, defined as the percentage of participants with total score =14.5 per DRS-R-98, is presented. Up to ~8 days
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