About this trial
The purpose of this study is to determine if treatment with the sleep aid suvorexant can decrease the rate of amyloid-β (Aβ) accumulation in the brain.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
Male or female.
Any race or ethnicity.
Participants must be age ≥65 years and able to sign informed consent.
Global Clinical Dementia Rating (CDR) 0.
Disqualifiers
History of reported symptoms suggestive of restless legs syndrome, narcolepsy or other central disorder of hypersomnolence, or parasomnia
STOP-Bang score >6 for participants without PAP
Untreated OSA with AHI ≥15 on home sleep test
Treated sleep apnea with PAP non-compliance
Trial design
Parallel
Treatments tested in this trial
Suvorexant 20 mg
DrugSuvorexant 20mg will be taken nightly for 24 months.
Placebo
DrugPlacebo will be taken nightly for 24 months.
Treatment groups
Trial outcomes
Primary outcomes
Change from baseline in Amyloid-β accumulation measured by plasma pT217/T217 in participants treated with 20 mg suvorexant compared to placebo
Blood collection
Secondary outcomes
Change in plasma Amyloid-β compared to placebo
Blood collection
Change in CSF Amyloid-β compared to placebo
Cerebrospinal fluid collection
Change in plasma tau compared to placebo
Blood collection
Change in CSF tau compared to placebo
Cerebrospinal fluid collection
Sponsors and contacts
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Washington University School of Medicine
Lead sponsor
Good Ventures
Collaborator
Merck Sharp & Dohme LLC
Collaborator