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Study Of Talnetant Versus Placebo And Risperidone In Schizophrenia

This study has been completed.
Information provided by (Responsible Party):
GlaxoSmithKline Identifier:
First received: February 14, 2005
Last updated: April 27, 2015
Last verified: April 2015
February 14, 2005
April 27, 2015
December 2004
October 2005   (Final data collection date for primary outcome measure)
The primary outcome measure is change in the Positive and Negative Syndrome Scale (PANSS) at Week 6 compared to baseline values. [ Time Frame: 6 weeks ]
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Complete list of historical versions of study NCT00103727 on Archive Site
The secondary measures assess both efficacy (cognition, depression) as well as a variety of safety/tolerability endpoints (adverse events, motor function, laboratory measures). [ Time Frame: 6 weeks ]
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Study Of Talnetant Versus Placebo And Risperidone In Schizophrenia
A Multicenter, Double-Blind, Double-Dummy, Placebo-Controlled, Randomized, Parallel Group Evaluation of the Efficacy and Safety of a Fixed-Dose of Talnetant Versus Placebo Versus Risperidone in Subjects With Schizophrenia
This study will evaluate whether talnetant (200mg, 400mg, 600mg) twice a day is effective compared to placebo and risperidone 1-3mg twice a day in treating the positive and negative symptoms of schizophrenia. Study subjects will be treated with study drug for up to 6 weeks and will then return for a follow-up visit 2 weeks later. About 275 patients with schizophrenia will be enrolled in this study.
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Phase 2
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Investigator)
Primary Purpose: Treatment
  • Drug: Talnetant
  • Other: placebo
    Placebo Comparator
  • Other: risperidone
    Active Comparator
  • Experimental: talnetant
    200mg, 400mg, 600mg) twice a day
    Intervention: Drug: Talnetant
  • Placebo Comparator: placebo
    Intervention: Other: placebo
  • Active Comparator: risperidone
    3mg twice a day
    Intervention: Other: risperidone
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*   Includes publications given by the data provider as well as publications identified by Identifier (NCT Number) in Medline.
October 2005
October 2005   (Final data collection date for primary outcome measure)

Inclusion criteria:

  • Subjects must have schizophrenia which is not secondary to another medical condition or substance abuse.
  • Require inpatient hospitalization.
  • Woman may enroll only if they are not of child-bearing potential OR are on a protocol-approved birth control method.

Exclusion criteria:

  • Subject is in their first episode of schizophrenia.
  • Subject has other psychotic disorders or bipolar disorder.
  • Subject has schizophrenia symptoms from taking another medicine or drug of abuse, or due to a general medical condition.
  • Subject has a recent history of substance dependence/dependence, or tests positive for illicit drug.
  • Subject has an unstable medical disorder, or any significant medical disorder including autistic disorder, organic brain disease, liver dysfunction, epilepsy or seizures, or is at increased risk of developing cerebrovascular problems like stroke.
  • Subject has any significant abnormalities in any of the screening tests (ECGs, labs, physical examinations, etc.).
  • Subject poses a current serious suicidal or homicidal risk.
  • Subject has a positive pregnancy test, or is lactating or planning to become pregnant within one month of the study.
  • Subject has recently or is currently participating in another clinical study.
  • Subject is stabilized on their current schizophrenia treatment.
  • Subject needs to take any of the medicines not permitted in the study, or has recently had ECT (electroconvulsive therapy) or TMS (transcranial magnetic stimulation).
  • Subject was non-responsive to two or more adequate trials of antipsychotic treatments over the past 2 years.
  • Subject has had an allergic or significant reaction to any of the study drugs, or can't take risperidone.
Sexes Eligible for Study: All
18 Years to 65 Years   (Adult)
Contact information is only displayed when the study is recruiting subjects
United States
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Study Director: GSK Clinical Trials GlaxoSmithKline
April 2015

ICMJE     Data element required by the International Committee of Medical Journal Editors and the World Health Organization ICTRP