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A Study to Evaluate the Safety and Effectiveness of ALKS 2680 in Subjects With Narcolepsy Type 1 (ALKS 2680-201)

A Phase 2, Parallel-Group, Dose-Range-Finding Study With Randomized Double-Blind Treatment and Open-Label Periods to Evaluate the Safety and Efficacy of ALKS 2680 in Subjects With Narcolepsy Type 1

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06358950
Acronym
Vibrance-1
Enrollment
92
Registered
2024-04-11
Start date
2024-03-24
Completion date
2025-07-31
Last updated
2026-06-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Narcolepsy Type 1

Keywords

Narcolepsy, Cataplexy, Orexin

Brief summary

The purpose of this research study is to assess the safety and efficacy of ALKS 2680 compared to placebo, including whether participants taking ALKS 2680 experience a greater decrease in sleepiness and a decrease in cataplexy ("sudden loss of muscle control"), compared to participants taking placebo alone.

Interventions

Oral tablet of ALKS 2680 for once daily administration

DRUGPlacebo

Oral tablet containing matching placebo for once daily administration

Sponsors

Alkermes, Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
No

Inclusion criteria

* 18-70 years of age * Has a BMI ≥18 and ≤40 kg/m2 * Meets the diagnostic criteria of Narcolepsy type 1 according to ICSD-3-TR guidelines. Additionally, meets the following criteria: * Is HLA-DQB1\*06:02-positive * Has residual excessive daytime sleepiness and cataplexy * Is willing and able to discontinue any medications prescribed for the management of narcolepsy symptoms for at least 14 days and for the duration of study * Is willing to adhere to additional protocol requirements

Exclusion criteria

* Significant comorbid medical conditions, including other sleep, cardiovascular, psychiatric, hepatic or other disorders may be exclusionary; eligibility will be determined on an individual basis by the study investigator * Is currently pregnant, breastfeeding, or planning to become pregnant during the study * Is currently enrolled in another clinical study (other than the parent study) or used any investigational drug or device within 30 days prior to Screening

Design outcomes

Primary

MeasureTime frame
Change in Mean Sleep Latency (MSL) on the Maintenance of Wakefulness Test (MWT) from baseline to Week 6Baseline to Week 6

Secondary

MeasureTime frameDescription
Change in Epworth Sleepiness Scale (ESS) from baseline to Week 6Baseline to Week 6Epsworth Sleepiness Scale is a 4-point scale used to measure excessive sleepiness from 0 (would never doze) to 3 (high chance of "dozing)
Mean weekly cataplexy rate (WCR) as derived by subject cataplexy diaryMeasured at Week 5 and 6
Incidence of adverse eventsUp to 15 Weeks

Countries

Australia, Belgium, Czechia, France, Italy, Netherlands, Spain, United States

Contacts

STUDY_DIRECTORStudy Medical Director, MD

Alkermes, Inc.

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 26, 2026