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ALKS 2680

Phase 2

Idiopathic Hypersomnia | Small molecule | Neurology |Alkermes plc|Last Updated: Aug 7, 2026

Target and mechanism

Molecular targetOX2R
Target classReceptor
ModalitySmall molecule

Also known as ALKS 2680, 4mg

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment126

FDA Designations

No designations recorded

Clinical trial landscape

ALKS 2680 · 4 trials · 3 indications

Phase 2 4
NCT06843590A Study to Evaluate the Safety and Effectiveness of ALKS 2680 in Subjects With Idiopathic HypersomniaIdiopathic Hypersomnia
RECRUITING126 Analytics
NCT06767683A Long-Term Study of ALKS 2680 in Subjects With Narcolepsy and Idiopathic HypersomniaNarcolepsy Type 1
RECRUITING256 Analytics
NCT06555783A Study to Evaluate the Safety and Effectiveness of ALKS 2680 in Subjects With Narcolepsy Type 2Narcolepsy Type 2
COMPLETED93 Analytics
NCT06358950A Study to Evaluate the Safety and Effectiveness of ALKS 2680 in Subjects With Narcolepsy Type 1 (ALKS 2680-201)Narcolepsy Type 1
COMPLETED92 Analytics
PHASE2RECRUITING
A Study to Evaluate the Safety and Effectiveness of ALKS 2680 in Subjects With Idiopathic Hypersomnia
Idiopathic HypersomniaUnlock trial analytics
PHASE2RECRUITING
A Long-Term Study of ALKS 2680 in Subjects With Narcolepsy and Idiopathic Hypersomnia
Narcolepsy Type 1Unlock trial analytics
PHASE2COMPLETED
A Study to Evaluate the Safety and Effectiveness of ALKS 2680 in Subjects With Narcolepsy Type 2
Narcolepsy Type 2Unlock trial analytics
PHASE2COMPLETED
A Study to Evaluate the Safety and Effectiveness of ALKS 2680 in Subjects With Narcolepsy Type 1 (ALKS 2680-201)
Narcolepsy Type 1Unlock trial analytics

Study Endpoints

Primary Endpoints

Change in Epworth Sleepiness Scale (ESS) from baseline to Week 8 by dose level
Up to 8 weeks
Incidence of Treatment-Emergent Adverse Events
Up to 100 Weeks
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.

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

Secondary Endpoints

Change in Idiopathic Hypersomnia Severity Scale (IHSS) from baseline to Week 8 by dose level
Up to 8 weeks
Incidence of treatment emergent adverse events
Up to 10 weeks
Change in the mean sleep latency (MSL) on Maintenance of Wakefulness Test (MWT)
Baseline to Week 24
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Study Design & Arms

AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
ALKS 2680, 10 mg- Part AEXPERIMENTALOral tablet containing 10 mg of ALKS 2680 for once daily administration
ALKS 2680, 14 mg -Part AEXPERIMENTALOral tablet containing 14 mg of ALKS 2680 for once daily administration
ALKS 2680, 18 mg- Part AEXPERIMENTALOral tablet containing 18 mg of ALKS 2680 for once daily administration
Placebo- Part APLACEBO_COMPARATOROral placebo tablet for once daily administration
ALKS 2680 Dose 1- Part BEXPERIMENTALOral tablets of ALKS 2680 taken, orally, daily
Placebo - Part BPLACEBO_COMPARATOROral tablets of placebo taken, orally, daily
Narcolepsy Type 1 (NT1)EXPERIMENTAL -
Narcolepsy Type 2 (NT2)EXPERIMENTAL -
Idiopathic Hypersomnia (IH)EXPERIMENTAL -
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
4 mg ALKS 2680EXPERIMENTAL -
6 mg ALKS 2680EXPERIMENTAL -
8 mg ALKS 2680EXPERIMENTAL -

Interventions

NameTypeDescription
ALKS 2680DRUGOral tablet containing ALKS 2680 for daily, oral administration
PlaceboDRUGOral placebo tablet for daily administration
ALKS 2680, 4mgDRUGOral tablet containing 4 mg of ALKS 2680 for once daily administration
ALKS 2680, 6mgDRUGOral tablet containing 6 mg of ALKS 2680 for once daily administration
ALKS 2680, 8mgDRUGOral tablet containing 8 mg of ALKS 2680 for once daily administration
ALKS 2680, 10mgDRUGOral tablet containing 10 mg of ALKS 2680 for once daily administration
ALKS 2680, 14mgDRUGOral tablet containing 14 mg of ALKS 2680 for once daily administration
ALKS 2680, 18mgDRUGOral tablet containing 18 mg of ALKS 2680 for once daily administration
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Eligibility Criteria

Age Range18 Years to 70 Years
SexALL
Healthy VolunteersNo
Study Sites50

Inclusion Criteria: * Is willing and able, in the opinion of the Investigator, to understand and comply with protocol requirements, including: lifestyle considerations and restrictions, adherence to contraception guidance, adherence to actigraphy and diary requirements, if receiving treatment for O...

Countries:United StatesAustraliaBelgiumCzechiaFranceItalyNetherlandsSpain
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Recent Changes (Last 90 Days)

LOWAug 7, 2026NCT06767683lastUpdatePostDate: changed
LOWAug 7, 2026NCT06767683lastUpdatePostDate: changed
MEDIUMJul 11, 2026NCT06358950TRIAL_REMOVED: changed
MEDIUMJul 11, 2026NCT06358950TRIAL_REMOVED: changed
MEDIUMJul 11, 2026NCT06358950TRIAL_REMOVED: changed
MEDIUMJun 24, 2026NCT06843590Enrollment: 96 → 126
MEDIUMJun 24, 2026NCT06843590Enrollment: 96 → 126

Frequently asked questions about ALKS 2680

What is ALKS 2680 used for?

ALKS 2680 is an investigational small molecule being developed for narcolepsy Type 1, narcolepsy Type 2, and idiopathic hypersomnia. It is currently in Phase 2 clinical trials and has not been approved by regulatory authorities.

What does ALKS 2680 target?

ALKS 2680 targets the OX2R receptor, also known as the orexin 2 receptor. By acting on this receptor, the drug is designed to address sleep-wake dysregulation associated with narcolepsy and idiopathic hypersomnia.

Who makes ALKS 2680?

ALKS 2680 is being developed by Alkermes plc, a biopharmaceutical company traded on NASDAQ under the ticker ALKS. The company is conducting Phase 2 clinical trials for the drug across multiple countries.

What phase is ALKS 2680 in?

ALKS 2680 is in Phase 2 clinical development. It is an investigational drug, meaning it has not received FDA approval and is still being evaluated for safety and effectiveness in clinical trials.

What clinical trials is ALKS 2680 in?

ALKS 2680 is being studied in several Phase 2 trials, including NCT06358950 for narcolepsy Type 1, NCT06555783 for narcolepsy Type 2, NCT06767683 for narcolepsy and idiopathic hypersomnia, and NCT06843590 for idiopathic hypersomnia. These trials are placebo-controlled and double-blind.

Is ALKS 2680 the same as ALKS 2680 4mg?

Yes, ALKS 2680 4mg refers to a specific dose of ALKS 2680. The drug is also known by this alternative name, which indicates the 4 milligram formulation being evaluated in clinical studies.