Study Evaluating The Effects Of Single Oral Doses Of NSA-789 On Auditory P50 Suppression In Schizophrenic Patients

This study has been terminated.
Information provided by:
Wyeth is now a wholly owned subsidiary of Pfizer Identifier:
First received: October 28, 2008
Last updated: July 21, 2009
Last verified: July 2009

The purpose of this study is to evaluate the effect of single doses of NSA-789 on the P50 component of the auditory evoked potentials and to assess the safety, tolerability and the concentration of NSA-789 in the blood, in nonsmoking patients with schizophrenia.

Condition Intervention Phase
Drug: NSA-789 at 2 different doses
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Pharmacodynamics Study
Intervention Model: Crossover Assignment
Masking: Double Blind (Subject, Caregiver, Investigator)
Official Title: A Double-Blind, Placebo-Controlled, Crossover Study to Evaluate the Effects of Single Oral Doses of NSA-789 on Auditory P50 Suppression in Nonsmoking Patients With Stabilized Schizophrenia

Resource links provided by NLM:

Further study details as provided by Wyeth is now a wholly owned subsidiary of Pfizer:

Primary Outcome Measures:
  • electroencephalogram [ Time Frame: 8 weeks ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • blood sample [ Time Frame: 8 weeks ] [ Designated as safety issue: No ]

Estimated Enrollment: 30
Study Start Date: January 2009
Estimated Study Completion Date: August 2009
Estimated Primary Completion Date: August 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
Dose 1
Drug: NSA-789 at 2 different doses
Experimental: 2
Dose 2
Drug: NSA-789 at 2 different doses
Placebo Comparator: 3 Drug: NSA-789 at 2 different doses


Ages Eligible for Study:   18 Years to 55 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No

Inclusion criteria:

  • Women of nonchildbearing potential, or men, aged 18 to 55 years inclusive on study day 1. Women of nonchildbearing potential may be included if they are either surgically sterile (hysterectomy and/or oophorectomy) or postmenopausal for ≥1 year (with a follicle-stimulating hormone [FSH] level of ≥38 mIU/mL). Women who are surgically sterile must provide documentation of the procedure by an operative report or ultrasound scan. Sexually active men must agree to use a medically acceptable form of contraception during the study and continue it for 12 weeks after test article administration.
  • Body mass index in the range of 18 to 32 kg/m2 and body weight ≥50 kg.
  • Hemoglobin no lower than 0.4 g/dL, less than the lower limit of the normal range, and white blood cell count no lower than 0.5 103/mm3, less than the lower limit of the of the normal range at screening and day -1. Hematocrit and absolute neutrophil count within normal range at screening and on day -1.

Exclusion criteria:

  • Women of childbearing potential.
  • Presence or history of any disorder that may prevent the successful completion of the study.
  • Any unstable psychiatric condition, which may prevent the successful and safe completion of the study in the opinion of the investigator.
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Please refer to this study by its identifier: NCT00781794

United States, California
Glendale, California, United States, 91206
Rouffach, France, 68250
Toul, France, 54201
Sponsors and Collaborators
Wyeth is now a wholly owned subsidiary of Pfizer
Study Director: Medical Monitor Wyeth is now a wholly owned subsidiary of Pfizer
  More Information

No publications provided

Responsible Party: Wyeth (Registry Contact: Clinical Trial Registry Specialist), Wyeth Identifier: NCT00781794     History of Changes
Other Study ID Numbers: 3230A1-1005
Study First Received: October 28, 2008
Last Updated: July 21, 2009
Health Authority: France: Afssaps - Agence française de sécurité sanitaire des produits de santé (Saint-Denis)
France: Institutional Ethical Committee

Additional relevant MeSH terms:
Schizophrenia and Disorders with Psychotic Features
Mental Disorders processed this record on September 18, 2014