An Open Label Study of FT218 in Subjects With Narcolepsy

NCT ID: NCT04451668

Last Updated: 2025-10-02

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

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

184 participants

Study Classification

INTERVENTIONAL

Study Start Date

2020-06-12

Study Completion Date

2024-11-18

Brief Summary

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An Open Label Study to Evaluate Long-Term Safety and Tolerability of a Once Nightly Formulation of Sodium Oxybate for Extended-Release Oral Suspension (FT218) and the ability to switch from twice-nightly immediate release sodium oxybate to once-nightly FT218 for the Treatment of Excessive Daytime Sleepiness and Cataplexy in Subjects with Narcolepsy

Detailed Description

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This study will enroll subjects with narcolepsy, either NT1 or NT2, who completed the FT218 Phase 3 REST-ON study or eligible subjects with narcolepsy currently receiving a stable dose of twice nightly sodium oxybate IR or mixed salts oxybate (regardless of whether they participated in the REST-ON study), or subjects who are naïve to oxybate therapy (i.e., FT218, twice nightly sodium oxybate IR or mixed salts oxybate). Following a screening period, subjects who meet the entry criteria will be enrolled into the study. Subjects who completed the FT218 Phase 3 REST-ON study will initiate treatment with FT218 at 4.5 g and will follow a titration schedule up to the highest tolerate dose (up to 9 g), or the dose deemed effective by the investigator. Subjects previously maintained on twice nightly sodium oxybate IR will initiate FT218 treatment at a dose equivalent or closest to the total gram dose of twice-nightly sodium oxybate IR and then titrate up or down, in accord with safety and effectiveness as determined by the investigator.

Conditions

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Narcolepsy Cataplexy Excessive Daytime Somnolence Sleep Disorder Sleep Disturbance Sleep Wake Disorders

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Open label treatment with FT218 (once nightly sodium oxybate extended release)
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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FT218

once nightly sodium oxybate extended release oral solution (FT218)

Group Type EXPERIMENTAL

FT218

Intervention Type DRUG

once nightly sodium oxybate extended release

Interventions

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FT218

once nightly sodium oxybate extended release

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Subjects receiving a stable doses of twice-nightly sodium oxybate IR or mixed salts oxybate for at least 4 weeks and are willing to switch to FT218
* Subjects who completed the CLFT218-1501 REST-ON Study in a compliant manner and for whom the Investigator determines would receive benefit from treatment with FT218 and have not started treatment with twice nightly sodium oxybate IR or mixed salts oxybate
* Are treatment naïve to any oxybate therapy (i.e. FT218, twice nightly sodium oxybate IR or mixed salts oxybate)
* Subjects have a diagnosis of narcolepsy, either confirmed prior to the REST-ON study or as confirmed by the Investigator as defined by the International Classification of Sleep Disorders 3 criteria (AASM 2014)
* Willing and able to give written informed consent for study participation. Young adults (16 and 17 years old) who have not reached the age of majority must be capable of giving assent in addition to consent from a legally authorized guardian, as required by local laws and regulations.

Exclusion Criteria

* Subjects that terminated the CLFT218-1501 REST-ON Study prior to completing Visit 8
* Any use of the following medications during the study: Anticonvulsants, Clonidine, Hypnotics, Anxiolytics, Sedating antihistamines, Antipsychotics, Other experimental medications designed to treat narcolepsy, cataplexy or any other condition, or other medications with significant sedating effects/CNS depressant effects are prohibited for REST-ON and naive patients. Patients on twice nightly sodium oxybate IR on medications in classes listed above may be eligible for enrollment if the subject has been on a stable dose of the prohibited medication in combination with a stable dose of twice nightly sodium oxybate or mixed salts oxybate for at least three months and has demonstrated no AEs, intolerance, or interactions AND is approved to participate by the Medical Monitor. Sedative hypnotics are prohibited regardless.)
* A diagnosis of sleep apnea where AHI is ≥15 and/or current use of CPAP or other devices for sleep apnea.
Minimum Eligible Age

16 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Avadel

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Sleep Disorders Center of Alabama

Birmingham, Alabama, United States

Site Status

Stanford Sleep Medicine

Redwood City, California, United States

Site Status

SDS Clinical Trials

Santa Ana, California, United States

Site Status

Alpine Clinical Research Center

Boulder, Colorado, United States

Site Status

Delta Waves, Inc.

Colorado Springs, Colorado, United States

Site Status

Pulmonary Disease Specialists, PA

Kissimmee, Florida, United States

Site Status

Sleep Medicine Specialists of South Florida

Miami, Florida, United States

Site Status

FL Pediatric Research Institute

Winter Park, Florida, United States

Site Status

NeuroTrials Research Inc

Atlanta, Georgia, United States

Site Status

SleepCare Research Institute, Inc. d/b/a Clinical Research Institute

Stockbridge, Georgia, United States

Site Status

Fort Wayne Neurological

Fort Wayne, Indiana, United States

Site Status

Helene A. Emsellem, MD PC

Chevy Chase, Maryland, United States

Site Status

Baystate Medical Center

Springfield, Massachusetts, United States

Site Status

St. Luke's Hospital - Sleep Medicine and Research Center

Chesterfield, Missouri, United States

Site Status

Montefiore Sleep-Wake Disorders Center

The Bronx, New York, United States

Site Status

Advanced Respiratory and Sleep Medicine

Huntersville, North Carolina, United States

Site Status

Sleep Management Institute Intrepid Research

Cincinnati, Ohio, United States

Site Status

University Hospitals Cleveland Medical Center

Cleveland, Ohio, United States

Site Status

Ohio Sleep Medicine Institute

Dublin, Ohio, United States

Site Status

Geisinger Medical Center

Danville, Pennsylvania, United States

Site Status

Brian Abaluck Sleep Medicine

Malvern, Pennsylvania, United States

Site Status

Bogan Sleep Consultants, LLC

Columbia, South Carolina, United States

Site Status

FutureSearch Trials of Neurology

Austin, Texas, United States

Site Status

Sleep Therapy & Research Center

San Antonio, Texas, United States

Site Status

Comprehensive Sleep Medicine Associates

Sugar Land, Texas, United States

Site Status

Northwest Houston Neurology

Tomball, Texas, United States

Site Status

TPMG Clinical Research Williamsburg

Williamsburg, Virginia, United States

Site Status

West Perry Sound Health Center

Parry Sound, Ontario, Canada

Site Status

Jodha Tishon Inc.

Toronto, Ontario, Canada

Site Status

Countries

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United States Canada

References

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Roy A, Stern T, Harsh J, Hudson JD, Ajayi AO, Corser BC, Mignot E, Santamaria A, Morse AM, Abaluck B, Ibrahim S, Schweitzer PK, Lancaster K, Dubow J, Gudeman J. RESTORE: Once-nightly oxybate dosing preference and nocturnal experience with twice-nightly oxybates. Sleep Med X. 2024 Aug 15;8:100122. doi: 10.1016/j.sleepx.2024.100122. eCollection 2024 Dec 15.

Reference Type DERIVED
PMID: 39263597 (View on PubMed)

Other Identifiers

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CLFT218-1901

Identifier Type: -

Identifier Source: org_study_id

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