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Study identifier: NCT06701396 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Evaluating the Effects of Tasimelteon Vs. Placebo in Delayed Sleep-Wake Phase Disorder (DSWPD) and the CRY1Δ11 Variant

Condition: Sleep Wake Disorders · Sleep Disorders, Circadian Rhythm · Chronobiology Disorders  ·  Sponsor: Vanda Pharmaceuticals

PhasePhase 3
Planned participants60
Who can joinAll sexes, 18 Years to 75 Years
Healthy volunteersNo

About this study

This is a double-blind, randomized, two-period crossover study to evaluate the efficacy and safety of a single oral dose of tasimelteon and matching placebo in male and female subjects with DSWPD and the CRY1Δ11 variant.

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

Talk to the study team

Vanda Pharmaceuticals Inc.  ·  202-734-3400  ·  VEC162@vandapharma.com

Always discuss trial participation with your own doctor first.

Locations (1)

Vanda Investigational SiteÇankaya, Ankara, Turkey (Türkiye)Recruiting

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Source record: clinicaltrials.gov/study/NCT06701396