Antipsychotic and Motor Effects of ACP-103 When Administered in Combination With Haloperidol and Risperidone

Completed · Phase 2

Conditions studied: Schizophrenia

In brief

The primary purpose of this study is to determine whether a combination of ACP-103 (the study medication) with either haloperidol or risperidone will show antipsychotic efficacy and that it is safe and well tolerated. Further purposes of this study are to determine whether ACP-103, in combination with either haloperidol or risperidone, will enhance their antipsychotic effectiveness, demonstrate effectiveness against the negative symptoms, improve motoric tolerability, and is safe and well tolerated. This is a seven-week study (one week screening and six weeks of study medication) where a total of 400 patients who meet entrance criteria will randomly be assigned to receive one of five groups of study treatments of either low dose haloperidol plus ACP-103, low dose haloperidol plus placebo (a substance similar to a sugar pill), low dose risperidone plus ACP-103, low dose risperidone plus placebo, or high dose risperidone plus placebo. The study will begin with with a three to seven day drug-free period followed by six weeks of a stable daily dosage of study medication. Study subjects will be treated as hospital in-patients during screening and for the first 14 days of the study. Study subjects will be closely monitored throughout the study.

Key facts

Study ID

NCT00361166

Run by

ACADIA Pharmaceuticals Inc.

People needed

400

Starts

2005-08-01

Expected to finish

2007-03-01

Last updated by the study team

2007-03-22

Who can join

Age: 18 and older, up to 65. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• male or female subjects ages 18-65 diagnosed with schizophrenia
• experiencing an acute exacerbation of psychosis
• has had prior response to antipsychotic therapy within the previous 3 years
• female subjects must be of non-childbearing potential or must comply with double-barrier protection methods against conception
• ability of subject or caregiver or legally authorized representative to provide informed consent
• subjects must be hospitalized at screening and must be willing to remain in the hospital at least 14 days after baseline and must comply with all study events through completion of the study

You may not qualify if…

• inability of the subject or caregiver or legally authorized representative to provide consent
• any female subject who is pregnant or breast feeding
• any subject with concurrent mental illness or disability
• any subject considered to be a danger to themselves or others
• recent use of certain antipsychotics or other medications that might interfere with this study's medication
• abnormal clinical laboratory values
• presence, or recent history, of serious medical conditions or drug abuse
• likely allergy or sensitivity to ACP-103, haloperidol, or risperidone, based on known allergies to drugs of the same class
• any subject who has participated in a prior clinical trial of ACP-103
• any subject judged by the Principal Investigator to be inappropriate for the study

Where it is running

• Study site — Cerritos, California, United States
• Study site — Garden Grove, California, United States
• Study site — Glendale, California, United States
• Study site — Paramount, California, United States
• Study site — Pico Rivera, California, United States
• Study site — San Diego, California, United States
• Study site — San Diego, California, United States
• Study site — Washington D.C., District of Columbia, United States
• Study site — St Louis, Missouri, United States
• Study site — Austin, Texas, United States
• Study site — Irving, Texas, United States
• Study site — Salvador, Estado de Bahia, Brazil
• Study site — Aparecida de Goiânia, Goiás, Brazil
• Study site — Curitiba, Paraná, Brazil
• Study site — Curitiba, Paraná, Brazil
• Study site — Rio de Janeiro, Rio de Janeiro, Brazil
• Study site — São Paulo, São Paulo, Brazil

Full record on ClinicalTrials.gov

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