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

NCT ID: NCT06701396

Last Updated: 2024-11-22

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2024-10-08

Study Completion Date

2025-06-30

Brief Summary

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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.

Detailed Description

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Conditions

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Sleep Wake Disorders Sleep Disorders, Circadian Rhythm Chronobiology Disorders Gene Mutations and Other Alterations Nec

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

CROSSOVER

Primary Study Purpose

TREATMENT

Blinding Strategy

QUADRUPLE

Participants Caregivers Investigators Outcome Assessors

Study Groups

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Tasimelteon

Group Type EXPERIMENTAL

Tasimelteon

Intervention Type DRUG

Oral capsule

Placebo

Group Type PLACEBO_COMPARATOR

Placebo

Intervention Type DRUG

Oral capsule

Interventions

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Tasimelteon

Oral capsule

Intervention Type DRUG

Placebo

Oral capsule

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Ability and acceptance to provide written informed consent.
* A confirmed clinical diagnosis of Delayed Sleep-Wake Phase Disorder (DSWPD).
* Carrier of CRY1Δ11 variant.
* Men or women between 18 - 75 years, inclusive.
* Body Mass Index (BMI) of ≥ 18 and ≤ 40 kg/m\^2.

Exclusion Criteria

* Major surgery, trauma, illness, general anesthesia, or immobility for 3 or more days within the last 30 days.
* Pregnancy, recent pregnancy (within 6 weeks), or women who are breastfeeding.
* A positive test for substances of abuse.
* Current tobacco user.
Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Vanda Pharmaceuticals

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Vanda Investigational Site

Çankaya, Ankara, Turkey (Türkiye)

Site Status RECRUITING

Countries

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Turkey (Türkiye)

Central Contacts

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Vanda Pharmaceuticals Inc.

Role: CONTACT

202-734-3400

Facility Contacts

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Vanda Pharmaceuticals Inc.

Role: primary

202-734-3400

Other Identifiers

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VP-VEC-162-3501

Identifier Type: -

Identifier Source: org_study_id

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