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CompletedPhase 3

Z-Drugs for Sleep Disorders in Alzheimer's Disease

Z-Drugs for the Treatment of Sleep Disorders in Alzheimer's Disease: a Randomized, Triple-blind, Placebo-controlled Study

Assets

Zolpidem / Zopiclone

Listed sites

1

Recruiting sites

-

Enrollment

62

actual

Study population

Alzheimer’s disease

Key I/E criteria

•Alzheimer's disease•MMSE 0-26•Study partner/caregiver required

Primary endpoint

•Nighttime Total Sleep Time

Footprint

Where this trial recruits

Site locations as reported to ClinicalTrials.gov. Site count is not enrollment count; per-site enrollment is not available from source.

Identifiers

Registered as

NCT IDNCT03075241
Org study IDZOLP-001

Timeline

Milestones

Study start2016-10actual (month precision)
Study first posted2017-03-09actual
Primary completion2020-04actual (month precision)
Study completion2020-04actual (month precision)
Last update posted2020-11-10actual

Assets

Drug assets

Study populations

Who this study enrolls

Alzheimer’s disease

Eligibility

Who can enroll

Minimum age55 Years
SexAll
Healthy volunteersNot accepted

Inclusion criteria

•55 years of age or older
•Diagnosis of probable Alzheimer's disease (AD) by National Institute of Neurological and Communicative Disorders and Stroke / the Alzheimer's Disease and Related Disorders Association Criteria
•Hachinski Ischemia Scale less than 5
•Mini-Mental State Examination score of 0 to 26
•Actigraph evidence of a mean time immobile of less than 7 hours per night based on at least 7 nights of complete actigraph data collected over a single week
•Four-week history of sleep disorder behaviors, occurring at least once weekly, as reported by the caregiver using the Neuropsychiatric Inventory (NPI) Nighttime Behavior scale
•Sleep disturbance observed was not present before the diagnosis of AD
•Other co-morbidities, especially delirium, depression, chronic pain and medication use may be present, but do not cooperate in the primary symptoms
•Computed tomography or magnetic resonance imaging since the onset of memory problems showing no more than 1 lacunar infract in a nonstrategic area and no clinical events suggestive of stroke or other intracranial disease or normal
•Stable medications for 4 weeks prior to the screening visit
•Having a mobile upper extremity to which to attach an actigraph
•Residing with a responsible spouse, family member, or professional caregiver who is present during the night and would agree to assume the role of the principle caregiver for the 3-week protocol
•Ability to ingest oral medication and participate in all scheduled evaluations

Exclusion criteria

•Sleep disturbance associated with an acute illness, delirium or psychiatric disease
•Clinically significant movement disorder, such as akinesia, that would affect actigraphic differentiation of sleep and wakefulness
•Severe agitation
•Unstable medical condition
•Discontinuation of psychotropic or sleep medication within 2 weeks of the screening visit
•Patient unwilling to maintain caffeine abstinence after 2:00pm for the duration of the protocol
•Patient unwilling to comply with the maximum limit of 2 alcoholic drinks per day, and only 1 alcoholic drink after 6:00pm for the duration of the protocolo
•Prior use of zolpidem/zoplicone for the treatment os sleep disturbances
•Caregiver deemed to be unreliable to supervise the wearing of the actigraph, to administer study capsules at the proper time, to maintain the sleep diary, or to bring the patient to the scheduled visits

Endpoints (8)

What's being measured

Protocol endpoints and posted registry outcome measures, grouped into outcome categories. Composite endpoints show their component event types. Standard codes (LOINC, SNOMED CT) are shown where available.

Coverage by outcome category

Behavior / neuropsychiatric
7
Other (unclassified)
1

Behavior / neuropsychiatric

7 endpoints
Primary/protocol endpoint

Nighttime Total Sleep Time

Time frame:Baseline, 14 days follow-up

time to event, event

Secondary/protocol endpoint

Daytime Total Sleep Time

Time frame:Baseline, 14 days follow-up

time to event, event

Secondary/protocol endpoint

Ratio of daytime to nighttime sleep

Time frame:Baseline, 14 days follow-up

time to event, event

Secondary/protocol endpoint

Nighttime Wake after Sleep Onset

Time frame:Baseline, 14 days follow-up

descriptive

Secondary/protocol endpoint

Proportion of sleep time at nighttime

Time frame:Baseline, 14 days follow-up

threshold achievement, improvement

Secondary/protocol endpoint

Proportion of patients with gain of at least 30 minutes in Total Sleep Time

Time frame:Baseline, 14 days follow-up

threshold achievement, improvement

Secondary/protocol endpoint

Differences between sleep efficiency between the two treatments.

Time frame:Baseline, 14 days follow-up

descriptive

Other (unclassified)

1 endpoint
Secondary/protocol endpoint/low confidence

Nighttime Number of Awakenings

Time frame:Baseline, 14 days follow-up

change from baseline, improvement

Publications (1)

Bibliography

Records linked to this trial through ClinicalTrials.gov references, PubMed NCT search, and curated study seeds. 'Canonical' marks design/result papers; others are registry references or candidates.

Provenance

Sources

Trial identity, design, statusClinicalTrials.gov API v2
Snapshot dateJuly 21, 2026
Endpoint classificationDelfa ADRD endpoint taxonomy
Results tableno registry results posted yet

Trial facts come from public ClinicalTrials.gov records. Endpoint categories are Delfa's classification of those records, not a ClinicalTrials.gov field. All figures reflect the July 21, 2026 snapshot.