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ALKS 3831

Phase 3

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

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-BlindCONTROLLEDBiomarker
Total Trials6
Total Enrollment2,099
FDA Designations
No designations recorded
Clinical Trials (6)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03201757Study to Evaluate the Long-term Safety, Tolerability, and Durability of Treatment Effect of ALKS 3831PHASE3 COMPLETED 523Jun 15, 2017Sep 6, 2023Sep 26, 202485 United States, Austria +11
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 DisorderPHASE3 COMPLETED 426Jun 8, 2017Jan 3, 2022Jan 19, 202357 United States, Austria +10
NCT02873208A Phase 3, Long-term Safety and Tolerability Study of ALKS 3831 in Adults With SchizophreniaPHASE3 COMPLETED 266Aug 7, 2016Oct 17, 2019Jul 21, 202145 United States, Puerto Rico
NCT02694328A Study of ALKS 3831 in Adults With Schizophrenia (The ENLIGHTEN-2 Study)PHASE3 COMPLETED 561Mar 2, 2016Nov 7, 2018Feb 10, 202054 United States, Puerto Rico
NCT02669758A Long-Term Safety and Tolerability Study of ALKS 3831 in Adults With SchizophreniaPHASE3 COMPLETED 281Jan 20, 2016Jun 29, 2018Jul 26, 201931 United States, Bulgaria +2
NCT02804568A Phase 1 Safety Study in Adults With SchizophreniaPHASE1 COMPLETED 42Jun 1, 2016Aug 1, 2016Sep 22, 20163 United States
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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
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
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
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Eligibility Criteria
Age Range16 Years — 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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