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A Study of RO4917838 (Bitopertin) in Patients With Persistent, Predominant Negative Symptoms of Schizophrenia (WN25309)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01192906
Recruitment Status : Completed
First Posted : September 1, 2010
Last Update Posted : November 2, 2016
Information provided by (Responsible Party):
Hoffmann-La Roche

Brief Summary:
This multi-center, randomized, double blind, parallel-group, placebo-controlled study will evaluate the efficacy and safety of RO4917838 (bitopertin) in patients with persistent, predominant negative symptoms of schizophrenia. Patients, on stable treatment with antipsychotics, will be randomized to receive daily oral doses of RO4917838 or matching placebo for 52 weeks, followed by an optional treatment extension for up to 3 years.

Condition or disease Intervention/treatment Phase
Schizophrenia Drug: Placebo Drug: bitopertin [RO4917838] Phase 3

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 624 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Official Title: A Phase III, Multi-center, Randomized, 24 Week, Double-blind, Parallel-group, Placebo-controlled Study to Evaluate Efficacy and Safety of RO4917838 in Stable Patients With Persistent, Predominant Negative Symptoms of Schizophrenia Treated With Antipsychotics Followed by a 28 Week, Double-blind Treatment Period.
Study Start Date : December 2010
Actual Primary Completion Date : July 2014
Actual Study Completion Date : July 2014

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Schizophrenia

Arm Intervention/treatment
Experimental: 1 Drug: bitopertin [RO4917838]
Oral dose level 1, once a day for 52 weeks

Experimental: 2 Drug: bitopertin [RO4917838]
Oral dose level 2, once a day for 52 weeks

Placebo Comparator: 3 Drug: Placebo
Oral doses, once a day for 52 weeks

Primary Outcome Measures :
  1. Efficacy (PANSS negative symptoms factor score) [ Time Frame: Week 24 ]
  2. Safety (incidence of adverse events) [ Time Frame: Week 24 ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Adult patients, aged 18 years and above
  • Diagnosis of schizophrenia of paranoid, disorganized, residual, undifferentiated or catatonic subtype
  • Predominant negative symptoms
  • With the exception of clozapine, patients are on any of the available marketed atypical or typical antipsychotics (treatment with a maximum of two antipsychotics)

Exclusion Criteria:

  • Evidence that patient has clinically significant, uncontrolled and unstable disorder (e.g. cardiovascular, renal, hepatic disorder)
  • Body Mass Index (BMI) of <17 or >40 kg/m2
  • Depressive symptoms, defined as a score of 9 or greater on the Calgary Depression Rating Scale for Schizophrenia (CDSS)
  • A severity score of 3 or greater on the Parkinsonism item of the ESRS-A (Clinical Global Impression, Parkinsonism)

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01192906

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Sponsors and Collaborators
Hoffmann-La Roche
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Study Director: Clinical Trials Hoffmann-La Roche
Publications automatically indexed to this study by Identifier (NCT Number):
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Responsible Party: Hoffmann-La Roche Identifier: NCT01192906    
Other Study ID Numbers: WN25309
First Posted: September 1, 2010    Key Record Dates
Last Update Posted: November 2, 2016
Last Verified: November 2016
Additional relevant MeSH terms:
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Schizophrenia Spectrum and Other Psychotic Disorders
Mental Disorders