CClinicalTrials.gg
CompletedNCT00616798Updated Jun 24, 2014

A Study of RO4917838 in Combination With Antipsychotic Treatment in Patients With Schizophrenia.

A Phase 2 interventional study of RO4917838 and RO4917838 in Schizophrenia, sponsored by Hoffmann-La Roche. Completed at 73 sites in 10 countries. Open to participants aged 18 Years to 60 Years. Per ClinicalTrials.gov, last updated 2014-06-24.

Sponsored by Hoffmann-La Roche · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
323
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Study summary

This study will determine the efficacy and safety of RO4917838 in patients with schizophrenia who are stable on current antipsychotic treatment (olanzapine, que tiapine, risperidone, paliperidone or aripiprazole) with prominent negative or d isorganized thought symptoms. After a 4 week run in period on their current anti psychotic treatment, patients will be randomized to receive placebo 10mg, 30mg, or 60mg of RO4917838 once daily, p.o., as add-on therapy. The anticipated time o n study treatment is \<3 months, and the target sample size is 100-500 individual s.

02

Conditions studied

  • Schizophrenia

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03

In context

Schizophrenia

3,471 studies on the registry are indexed under Schizophrenia; 472 are open to participants now.

This study's enrollment of 323 is above the median of 70 across 2,872 interventional studies indexed under Schizophrenia.

Browse Schizophrenia studies →

Lead sponsor

Hoffmann-La Roche is the lead sponsor of 2,061 studies on the registry; 85 are open to participants now.

Of its 319 completed or terminated interventional studies of FDA-regulated products, 239 (75%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • adult patients, 18-60 years of age;
  • diagnosis of schizophrenia (based on screening tests);
  • outpatients, with no hospitalization for worsening of schizophrenia within 3 months;
  • medically and psychiatrically stable over prior 1 month and psychiatrically stable without symptom exacerbation within prior 3 months;
  • currently taking no more than 2 antipsychotic drugs.

Exclusion criteria

Exclusion Criteria:

  • began a new non-medication treatment for schizophrenia or other psychiatric condition within last 3 months;
  • on >1 antidepressant, or a change in dose of antidepressant within 3 months;
  • alcohol or substance abuse or dependence within 3 months;
  • has previously received RO4917838.
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
323 participants (actual)

Study arms

  • Experimental
    3

    Drug: RO4917838 · Drug: Standard antipsychotic therapy

  • Placebo comparator
    4

    Drug: Placebo · Drug: Standard antipsychotic therapy

  • Experimental
    1

    Drug: RO4917838 · Drug: Standard antipsychotic therapy

  • Experimental
    2

    Drug: RO4917838 · Drug: Standard antipsychotic therapy

Interventions

  • DrugRO4917838

    10mg po daily

  • DrugRO4917838

    30mg po daily

  • DrugRO4917838

    60mg po daily

  • DrugPlacebo

    po daily

  • DrugStandard antipsychotic therapy

    As prescribed

06

What researchers measure

Primary outcomes

  1. Mean change from baseline in PANSS (Positive and Negative Syndrome Scale) negative factor score.

    Time frame: Week 8

Secondary outcomes

  1. Change from baseline in total PANSS score, CGI, PSP, SGLS; cognition status changes.

    Time frame: Throughout study

  2. AEs, laboratory parameters, C-SSRS

    Time frame: Throughout study

07

Study locations

73 sites
  • Granada Hills, California 91344, United States
  • Los Angeles, California 90033, United States
  • Oceanside, California 92056, United States
  • Torrance, California 90502, United States
  • Atlanta, Georgia 30308, United States
  • Hoffman Estates, Illinois 60169, United States
  • Brooklyn, New York 11203, United States
  • Cincinnati, Ohio 45267, United States
  • Oklahoma City, Oklahoma 73103, United States
  • Philadelphia, Pennsylvania 19139, United States
  • Austin, Texas 78754, United States
  • Austin, Texas 78756, United States
  • De Soto, Texas 75115, United States
  • Irving, Texas 75062, United States
  • Wien, 1010, Austria
  • Wien, 1090, Austria
  • Curitiba, 80520-000, Brazil
  • Pelotas, 96030-002, Brazil
  • Rio de Janeiro, 21020-130, Brazil
  • Salvador, 40301-500, Brazil
  • Sao Paulo, 04044-000, Brazil
  • Sao Paulo, 05403-010, Brazil
  • Marseille, 13009, France
  • Orvault, 44700, France
  • Toulon, 83056, France
  • Achim, 28832, Germany
  • Bochum, 44805, Germany
  • Freiburg, 79104, Germany
  • Hamburg, 20246, Germany
  • Nürnberg, 90402, Germany
  • Westerstede, 26655, Germany
  • Balassagyarmat, 2660, Hungary
  • Budapest, 1083, Hungary
  • Budapest, 1097, Hungary
  • Budapest, 1125, Hungary
  • Budapest, 1135, Hungary
  • GYR, 9024, Hungary
  • Gyula, 5700, Hungary
  • Nyíregyháza, 4400, Hungary
  • Aichi, 470-1192, Japan
  • Chiba, 272-8516, Japan
  • Fukuoka, 807-8555, Japan
  • Fukuoka, 812-8582, Japan
  • Gunma, 373-0054, Japan
  • Kanagawa, 232-0024, Japan
  • Kanagawa, 236-0004, Japan
  • Nagasaki, 852-8501, Japan
  • Saga, 842-0192, Japan
  • Sapporo, 060-8638, Japan
  • Tokushima, 770-8503, Japan
  • Tokyo, 162-8666, Japan
  • Tokyo, 187-8551, Japan
  • Mexico City, 06100, Mexico
  • Mexico City, 11560, Mexico
  • Mexico City, 1400, Mexico
  • Mexico City, 14370, Mexico
  • Monterrey, 64710, Mexico
  • Bydgoszcz, 85-096, Poland
  • Kielce, 25-317, Poland
  • Skorzewo, 60-165, Poland
  • Torun, 87-100, Poland
  • Tuszyn, 95-080, Poland
  • Zuromin, 09-300, Poland
  • Kazan, 420012, Russian Federation
  • Lipetsk, 399313, Russian Federation
  • Moscow, 115522, Russian Federation
  • Moscow, 117152, Russian Federation
  • Moscow, 123367, Russian Federation
  • Nizhny Novgorod, 603155, Russian Federation
  • St Petersbourg, 190005, Russian Federation
  • St Petersburg, 192019, Russian Federation
  • St Petersburg, 193019, Russian Federation
  • St. Petersburg, 193167, Russian Federation
08

References and documents

Publications

  • Umbricht D, Alberati D, Martin-Facklam M, Borroni E, Youssef EA, Ostland M, Wallace TL, Knoflach F, Dorflinger E, Wettstein JG, Bausch A, Garibaldi G, Santarelli L. Effect of bitopertin, a glycine reuptake inhibitor, on negative symptoms of schizophrenia: a randomized, double-blind, proof-of-concept study. JAMA Psychiatry. 2014 Jun;71(6):637-46. doi: 10.1001/jamapsychiatry.2014.163. PubMed 24696094 ↗
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 24, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00616798
Lead sponsor
Hoffmann-La Roche
Responsible party
Sponsor
First posted
Feb 15, 2008
Start date
Mar 2008
Primary completion
Feb 2010
Completion
Feb 2010
Last update
Jun 24, 2014

Study contacts

Clinical Trials
study director · Hoffmann-La Roche
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jun 2014. You cannot join it, but the record below documents what was studied.

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