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ALKS 3831

Phase 3FDA approved 2021

Schizophrenia | Small molecule | Psychiatry |Alkermes plc|Trials Updated: Sep 26, 2024

ALKS 3831 development status

FDA approval May 28, 2021 as Lybalvi
Approval holderAlkermes Inc
ApplicationNDA213378
Highest phase Phase 3
Registered trials 8 across 1 sponsor since Feb 2016

Label indication LYBALVI is indicated for the treatment of: Schizophrenia in adults Bipolar I disorder in adults Acute treatment of manic or mixed episodes as monotherapy and as adjunct to lithium or valproate Maintenance monotherapy treatment LYBALVI is a combination of olanzapine, an atypical antipsychotic, and samidorphan, an opioid antagonist, indicated for the treatment of: Schizophrenia in adults ( 1 ) Bipolar I disorder in… FDA label

ALKS 3831 target and mechanism

ModalitySmall molecule

Also known as LYBALVI

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials7
Total Enrollment2,111

FDA Designations

No designations recorded

ALKS 3831 clinical trials

ALKS 3831 · 7 trials · 5 indications

Phase 3 5Phase 1 2
NCT03201757Study to Evaluate the Long-term Safety, Tolerability, and Durability of Treatment Effect of ALKS 3831Schizophrenia
COMPLETED523 Analytics
NCT03187769Study to Evaluate the Efficacy of ALKS 3831 on Body Weight in Young Adults Who Have Been Recently Diagnosed With Schizophrenia, Schizophreniform, or Bipolar I DisorderSchizophrenia
COMPLETED426 Analytics
NCT02873208A Phase 3, Long-term Safety and Tolerability Study of ALKS 3831 in Adults With SchizophreniaSchizophrenia
COMPLETED266 Analytics
NCT02694328A Study of ALKS 3831 in Adults With Schizophrenia (The ENLIGHTEN-2 Study)Schizophrenia
COMPLETED561 Analytics
NCT02669758A Long-Term Safety and Tolerability Study of ALKS 3831 in Adults With SchizophreniaSchizophrenia
COMPLETED281 Analytics
PHASE3COMPLETED
Study to Evaluate the Long-term Safety, Tolerability, and Durability of Treatment Effect of ALKS 3831
SchizophreniaUnlock trial analytics
PHASE3COMPLETED
Study to Evaluate the Efficacy of ALKS 3831 on Body Weight in Young Adults Who Have Been Recently Diagnosed With Schizophrenia, Schizophreniform, or Bipolar I Disorder
SchizophreniaUnlock trial analytics
PHASE3COMPLETED
A Phase 3, Long-term Safety and Tolerability Study of ALKS 3831 in Adults With Schizophrenia
SchizophreniaUnlock trial analytics
PHASE3COMPLETED
A Study of ALKS 3831 in Adults With Schizophrenia (The ENLIGHTEN-2 Study)
SchizophreniaUnlock trial analytics
PHASE3COMPLETED
A Long-Term Safety and Tolerability Study of ALKS 3831 in Adults With Schizophrenia
SchizophreniaUnlock trial analytics

Study Endpoints

Primary Endpoints

Incidence of Adverse Events
Up to 48 months
Change From Baseline in Clinical Global Impression-Severity (CGI-S) Scale
Up to 48 months

The clinical global impression - severity scale (CGI-S) is a 7-point scale that requires the clinician to rate the severity of the patient's illness at the time of assessment, relative to the clinician's past experience with patients who have the same diagnosis; 1 being normal, not ill at all and 7 being among the severally ill patients

Percent Change From Baseline in Body Weight at Week 12
Baseline and 12 weeks

The efficacy analyses were performed using the Final Analysis Set which is defined as all randomized subjects who received one dose of study drug and had at least 1 primary efficacy assessment after administration of study drug

Number of Subjects With Adverse Events
Up to 52 weeks

Overall summary of treatment emergent adverse events during the treatment period

Percent Change From Baseline in Body Weight at Week 24
Baseline and Week 24
Percentage of Participants With >/= 10% Weight Gain at Week 24
Baseline and Week 24
Number of Participants With Adverse Events (AEs)
Up to 52 weeks
Area under the concentration-time curve from time zero to 48 hours post-dose (AUC0 48)
Up to 15 days
Area under the concentration-time curve from time zero to the time of the last quantifiable concentration (AUClast)
Up to 15 days
Area under the concentration-time curve from time zero to infinity (AUC∞)
Up to 15 days
\Maximum observed concentration (Cmax)
Up to 15 days
Time to reach Cmax (tmax)
Up to 15 days
Terminal half-life (t½)
Up to 15 days
Maximum plasma concentration (Cmax)
Up to 15 days of dosing
Area under the concentration vs time curve over the 24 hour dosing interval (AUC0-24h)
Up to 15 days of dosing

Secondary Endpoints

Percentage of Subjects With ≥10% Weight Gain at Week 12
Baseline and 12 weeks
Percentage of Subjects With ≥7% Weight Gain at Week 12
Baseline and 12 weeks
Number of Participants Experiencing of Adverse Events (AEs)
Up to 16 weeks
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
ALKS 3831EXPERIMENTALCoated bilayer tablet
OlanzapineACTIVE_COMPARATORCoated bilayer tablet
5mg OLZAPINE /10mg SAMIDORPHANEXPERIMENTALOpen label, single dose 5mg OLZ/10 mg SAM
Group 1EXPERIMENTALOlanzapine/samidorphan 10 mg/10 mg
Group 2EXPERIMENTALOlanzapine/samidorphan 20 mg/10 mg

Interventions

NameTypeDescription
ALKS 3831DRUGOlanzapine + samidorphan, daily oral dosing
OlanzapineDRUGDaily oral dosing
LYBALVIDRUG5 mg Olanzapine/10 mg Samidorphan dose approved for use in treatment for schizophrenia and bipolar I disorder
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Eligibility Criteria

Age Range16 Years to 70 Years
SexALL
Healthy VolunteersNo
Study Sites85

Inclusion Criteria: * Willing and able to give informed consent/assent as per local requirements * Agrees to use an acceptable method of contraception during the study, and for 30 days after any study drug administration, unless surgically sterile or post-menopausal * Has the potential to benefit f...

Countries:United StatesAustriaBulgariaIrelandIsraelItalyPolandPuerto RicoRussiaSerbiaSouth KoreaUkraineUnited KingdomGermanySpain
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Frequently asked questions about ALKS 3831

What is ALKS 3831 used for?

ALKS 3831 is being developed for the treatment of schizophrenia. Clinical trials have also enrolled patients with schizophreniform disorder and bipolar I disorder. It is an investigational small molecule that has not been approved by the FDA and remains in clinical development.

Who is developing ALKS 3831?

ALKS 3831 is being developed by Alkermes plc, which trades on the Nasdaq under the ticker ALKS. The company is the sponsor of the clinical program, which includes Phase 3 trials in schizophrenia and related conditions.

What phase is ALKS 3831 in?

ALKS 3831 is in Phase 3 development. Six trials have been completed, including Phase 3 studies, and no trials are currently active. The program has enrolled approximately 2,099 participants across its completed studies.

What clinical trials is ALKS 3831 in?

Completed trials of ALKS 3831 include NCT03201757, a Phase 3 long-term safety and tolerability study; NCT03187769, a Phase 3 efficacy study on body weight in young adults; NCT02873208, a Phase 3 long-term safety study in adults with schizophrenia; and NCT02804568, a Phase 1 safety study.

What does ALKS 3831 target?

ALKS 3831 is a small molecule therapeutic. Its molecular target has not been specified in the available program information, so its precise mechanism of action is not described here. It is being studied for schizophrenia and related psychiatric conditions.