RecruitingPhase 2NCT07213349

Daridorexant for Alzheimer Disease Prevention

Double Blind Clinical Trial of Daridorexant (Dual Orexin Receptor Antagonist) for Alzheimer Disease Prevention


Sponsor

Douglas Mental Health University Institute

Enrollment

240 participants

Start Date

Oct 14, 2025

Study Type

INTERVENTIONAL

Conditions

Summary

This study will evaluate whether daridorexant, a DORA sleep medication, can support brain health by promoting the clearance of proteins linked to the development and progression of Alzheimer's disease. The trial is preventive and is open to participants who do not have Alzheimer's disease dementia, regardless of whether or not they experience sleep problems.


Eligibility

Min Age: 50 YearsMax Age: 90 Years

Inclusion Criteria4

  • Without dementia as determined by: MoCA \>21 or MMSE \> 24 or Clinical Dementia Rating \<1
  • Minimum of 6 years of formal education
  • Stable psychoactive medication for 1 month prior to screening with no intention to change dose during treatment period
  • Capacity to provide written consent in English or French

Exclusion Criteria15

  • Clinical diagnosis of major neurocognitive disorder
  • Unstable psychiatric condition:
  • Clinically significant active suicidal ideations
  • Unstable medical condition in the opinion of the investigator.
  • Known or suspected history of drug or alcohol dependence or abuse within one year of the screening visit
  • Currently taking a DORA
  • Allergy or significant adverse reaction to DORA
  • Use of benzodiazepines or z-drugs \> 2 times per week in the last month.
  • Use of major and moderate CYP3A4 inducers and inhibitors
  • Use of strong central nervous system depressants, opioids, strong analgesics, antipsychotics, sedative antidepressants.
  • Active use of cholinesterase inhibitors or memantine
  • Women who are breast feeding or pregnant
  • Severe obstructive sleep apnea (OSA)\*
  • Clinically significant non-treated rapid eye movement (REM) sleep behavior disorder, restless leg syndrome or parasomnia;
  • Diagnosis of narcolepsy

Interventions

DRUGDaridorexant 50 mg

Study drug (Daridorexant 50 mg) taken orally each night 30 minutes before bedtime, for the 1 year duration of the study

DRUGPlacebo

Study drug (Placebo) will be taken orally each night, 30 minutes before bedtime, for the 1 year duration of the study


Locations(1)

Centre StoP-Alzheimer (Douglas Mental Health University Institute - Research Centre)

Montreal, Quebec, Canada

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NCT07213349


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