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Multiple Dose Safety Study of PF-04802540 in Subjects With Schizophrenia

This study has been completed.
ClinicalTrials.gov Identifier:
First Posted: April 6, 2009
Last Update Posted: March 19, 2010
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.
Information provided by:
Taisho Pharmaceutical Co., Ltd.
The purpose of this study is to evaluate the safety, tolerability, and pharmacokinetics of multiple ascending doses of PF-04802540 administered orally to subjects with schizophrenia.

Condition Intervention Phase
Schizophrenia Drug: PF-04802540 Drug: Placebo Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Basic Science
Official Title: Phase 1, Investigator And Subject-Blind, Placebo-Controlled, Randomized, Sequential Group, Multiple Ascending Dose Study To Assess The Safety, Tolerability, Pharmacokinetics And Pharmacodynamics Of PF-04802540 In Patients With Schizophrenia

Resource links provided by NLM:

Further study details as provided by Taisho Pharmaceutical Co., Ltd.:

Primary Outcome Measures:
  • Safety assessments: vital signs, ECG, physical examination, laboratory tests, Columbia - Suicide Severity Rating Scale [ Time Frame: 22 days ]
  • Adverse Events [ Time Frame: 22 Days ]
  • Plasma concentrations of PF 04802540 and its metabolite, PF 04831035 [ Time Frame: 12 Days ]

Secondary Outcome Measures:
  • Positive and Negative Syndrome Scale [ Time Frame: 16 days ]
  • Clinical Global Impression of Severity and Improvement [ Time Frame: 16 days ]
  • Extrapyramidal Symptom Rating Scale - Abbreviated [ Time Frame: 16 days ]

Enrollment: 39
Study Start Date: April 2009
Study Completion Date: September 2009
Primary Completion Date: September 2009 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: PF-04802540 Drug: PF-04802540
Multiple ascending doses for 10 days; planned doses include capsules totaling 5 mg and 20 mg every 12 hours, with additional doses determined based on accumulating data
Placebo Comparator: Placebo Drug: Placebo
Placebo capsules every 12 hours for 10 days


Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Males or females of non-childbearing capacity aged 18 to 55 years inclusive
  • DSM-IV diagnosis of schizophrenia, stable symptoms for at least 3 months
  • Body mass index in the range of 18 to 40 kg/m2 and body weight>45 kg.

Exclusion Criteria:

  • Evidence or history of a primary DSM IV axis I diagnosis other than schizophrenia.
  • Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease
  • Any condition possibly affecting drug absorption (eg, gastrectomy).
  Contacts and Locations
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 ClinicalTrials.gov identifier (NCT number): NCT00876304

United States, California
Pfizer Investigational Site
Glendale, California, United States, 91206
Sponsors and Collaborators
Taisho Pharmaceutical Co., Ltd.
Study Director: Pfizer CT.gov Call Center Pfizer
  More Information

Additional Information:
Responsible Party: Taisho Pharmaceutical Co., Ltd.
ClinicalTrials.gov Identifier: NCT00876304     History of Changes
Other Study ID Numbers: B0911004
First Submitted: April 3, 2009
First Posted: April 6, 2009
Last Update Posted: March 19, 2010
Last Verified: October 2009

Keywords provided by Taisho Pharmaceutical Co., Ltd.:
PF-04802540 multiple dose safety study

Additional relevant MeSH terms:
Schizophrenia Spectrum and Other Psychotic Disorders
Mental Disorders