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Study identifier: NCT06874855 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Lemborexant in Delayed Sleep Phase Syndrome

Condition: Delayed Sleep Phase Syndrome  ·  Sponsor: University of California, San Francisco

PhasePhase 4
Planned participants15
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersYes

About this study

The purpose of the study is to evaluate whether Lemborexant is more effective than placebo in shortening sleep onset latency in patients with delayed sleep phase syndrome (both type 1 and type 2). This will be tracked using sleep logs as well as actigraphy. In this 2-year study, the investigators will examine if Lemborexant administered 5-10 mg nightly taken at desired bedtime (at least 2 hours prior to self-reported sleep onset habitual time) can improve the symptoms of Delayed Sleep Phase Syndrome.

This description comes directly from the study's public registry record.

Talk to the study team

Andrew D Krystal, MD, MS  ·  415-476-7702  ·  andrew.krystal@ucsf.edu

Always discuss trial participation with your own doctor first.

Locations (1)

University of California San FranciscoSan Francisco, California, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT06874855