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ALKS 2680

Phase 2

Narcolepsy Type 2 | Small molecule | Other |Alkermes plc|Last Updated: Feb 27, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment93
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT06555783A Study to Evaluate the Safety and Effectiveness of ALKS 2680 in Subjects With Narcolepsy Type 2PHASE2 COMPLETED 93Jul 26, 2024Nov 21, 2025Feb 27, 202647 United States, Australia +6
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Study Endpoints
Primary Endpoints
Change in Mean Sleep Latency (MSL) on the Maintenance Wakefulness Test (MWT)
Baseline to Week 8
Change in Epworth Sleepiness Scale (ESS)
Baseline to week 8

Participants will be asked to complete the ESS, reporting on the level of sleepiness they experienced over the past 7 days.

Secondary Endpoints
Incidence of adverse events
Up to 21 weeks
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Study Design & Arms
AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
ALKS 2680, 10 mgEXPERIMENTALOral tablet containing 10mg of ALKS 2680 for once daily administration
ALKS 2680, 14 mgEXPERIMENTALOral tablet containing 14mg of ALKS 2680 for once daily administration
ALKS 2680, 18 mgEXPERIMENTALOral tablet containing 18mg of ALKS 2680 for once daily administration
PlaceboPLACEBO_COMPARATOROral tablet containing matching placebo for once daily administration
Interventions
NameTypeDescription
ALKS 2680DRUGOral tablet containing ALKS 2680
PlaceboDRUGOral tablet containing placebo for once daily administration
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Eligibility Criteria
Age Range18 Years — 70 Years
SexALL
Healthy VolunteersNo
Study Sites47

Inclusion Criteria: * 18-70 years of age * Has a BMI ≥18 and ≤40 kg/m2 * Meets the diagnostic criteria of Narcolepsy type 2 according to ICSD-3-TR guidelines. Additionally, meets the following criteria: * Has residual excessive daytime sleepiness * Is willing and able to discontinue any medicatio...

Countries:United StatesAustraliaBelgiumCzechiaFranceItalyNetherlandsSpain
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Recent Changes (Last 90 Days)
MEDIUMApr 8, 2026NCT06555783TRIAL_REMOVED: changed
MEDIUMApr 8, 2026NCT06555783TRIAL_REMOVED: changed