ClinicalTrials.Veeva

Menu

A Study of ALKS 3831 in Adults With Acute Exacerbation of Schizophrenia (the ENLIGHTEN-1 Study)

Alkermes logo

Alkermes

Status and phase

Completed
Phase 3

Conditions

Schizophrenia

Treatments

Drug: Olanzapine
Drug: Placebo
Drug: ALK3831

Study type

Interventional

Funder types

Industry

Identifiers

NCT02634346
ALKS-3831-A305

Details and patient eligibility

About

This study will evaluate the efficacy of ALKS 3831 in adult subjects with acute exacerbation of schizophrenia.

Enrollment

403 patients

Sex

All

Ages

18 to 70 years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Has a body mass index (BMI) of 18.0 - 40.0 kg/m^2
  • Meets criteria for the diagnosis of schizophrenia
  • Resides in a stable living situation when not hospitalized
  • Is willing and able to provide government-issued identification
  • Additional criteria may apply

Exclusion criteria

  • Has had a psychiatric hospitalization for more than 30 days during the 90 days before screening
  • Subject initiated first antipsychotic treatment within the past 12 months, or <1 year has elapsed since the initial onset of active-phase of schizophrenia symptoms
  • Subject poses a current suicide risk
  • Subject has a history of treatment resistance
  • Subject has a history of poor or inadequate response to treatment with olanzapine
  • Subject requires or has had electroconvulsive therapy (ECT) treatment in the 2-month period prior to screening
  • Subject has a diagnosis of moderate or severe alcohol or drug use disorder
  • Subject has a positive urine drug screen for opioids, amphetamine/methamphetamine, phencyclidine, or cocaine at screening
  • Additional criteria may apply

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Quadruple Blind

403 participants in 3 patient groups, including a placebo group

ALKS 3831
Experimental group
Description:
Administered as a coated bilayer tablet
Treatment:
Drug: ALK3831
Olanzapine
Active Comparator group
Description:
Administered as a coated bilayer tablet
Treatment:
Drug: Olanzapine
Placebo
Placebo Comparator group
Description:
Administered as a coated bilayer tablet
Treatment:
Drug: Placebo

Trial documents
2

Trial contacts and locations

31

Loading...

Data sourced from clinicaltrials.gov

Clinical trials

Find clinical trialsTrials by location
© Copyright 2026 Veeva Systems