Last updated on November 2019

A Study to Evaluate the Safety and Efficacy of BIIB104 in Participants With Cognitive Impairment Associated With Schizophrenia (CIAS)


Are you eligible to participate in this study?

You may be eligible for this study if you meet the following criteria:

  • Conditions: Cognitive Impairment Associated With Schizophrenia | Schizophrenia
  • Age: Between 18 - 50 Years
  • Gender: Male or Female

Key Inclusion Criteria:

  • Otherwise healthy participant with a Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5), diagnosis of schizophrenia of at least 2 years' duration as confirmed by the mini-international neuropsychiatric interview (MINI) 7.0.2 for Psychotic Disorders.
  • Evidence of stable schizophrenia symptomatology 12 weeks (e.g., no hospitalizations for schizophrenia, no increase in level of psychiatric care due to worsening of schizophrenia symptoms).
  • Participants must be in ongoing maintenance atypical antipsychotic therapy (except clozapine), on a stable treatment regimen for 8 weeks prior to Baseline/Day 1, including concomitant psychotropic medication. Doses of background atypical antipsychotics should be within the recommended dose range listed in the approved product labeling of the country where the study is being conducted.
  • SCI-PANSS: No more than moderate-severe rating (score 5) on hallucinations, delusions, and hostility; PANSS, positive symptom items (P1, P3, P5, P6, P7); or unusual thought content (G9); and no more than a moderate severity rating (score 4) on positive formal thought disorder (P2).

Key Exclusion Criteria:

  • Participation in a trial within the previous 6 months.
  • Participation in cognitive remediation therapy within 6 months prior to randomization.
  • Screening MCCB Working Memory T-score 60 on either the Letter Number Span or the Wechsler Memory Scale, Third Edition (WMS-III) Spatial Span task.
  • Current DSM-5 diagnosis of schizoaffective disorder on the MINI 7.0.2 for Psychotic Disorders.
  • Current DSM-5 diagnosis of major depressive episode, manic and hypomanic episode, panic disorder, agoraphobia, social anxiety disorder, obsessive-compulsive disorder, posttraumatic stress disorder, and/or generalized anxiety disorder on the MINI 7.0.2 for Psychotic Disorders.
  • Lifetime DSM-5 diagnosis of antisocial personality disorder, anorexia nervosa, bulimia nervosa, and/or binge-eating disorder on the MINI 7.0.2 for Psychotic Disorders.
  • Meets the DSM-5 diagnosis of moderate or severe substance use disorder (excluding nicotine dependence) within 12 months of screening on the MINI 7.0.2 for Psychotic Disorders interview.
  • DSM-5 diagnosis of Intellectual Disability (intellectual developmental disorder).

NOTE: Other protocol defined Inclusion/Exclusion criteria may apply.

Recruitment Status: Open


Brief Description Eligibility Contact Research Team


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