A Study of Safety and Efficacy of Pimav… | Clinical Trial

Key information

Conditions

Parkinson's Disease Psychosis

Age range

40 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Primary location

Innsbruck, Austria

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

A clinical diagnosis of Parkinson's disease with a minimum duration of 1 year
Presence of visual and/or auditory hallucinations, and/or delusions, occurring during the four weeks prior to study screening
Psychotic symptoms must have developed after Parkinson's disease diagnosis was established
Subject must be on stable dose of anti-Parkinson's medication for 1 month prior to Study Day 1 (Baseline) and during the trial
Subject that has received stereotaxic surgery for subthalamic nucleus deep brain stimulation must be at least 6 months post surgery and the stimulator settings must have been stable for at least 1 month prior to Study Day 1 (Baseline) and must remain stable during the trial
The subject is willing and able to provide consent
Caregiver is willing and able to accompany the subject to all visits

Exclusion criteria

Subject has a history of significant psychotic disorders prior to or concomitantly with the diagnosis of Parkinson's disease including, but not limited to, schizophrenia or bipolar disorder
Subject has received previous ablative stereotaxic surgery (i.e., pallidotomy and thalamotomy) to treat Parkinson's disease
Subject has current evidence of a serious and or unstable cardiovascular, respiratory, gastrointestinal, renal, hematologic or other medical disorder
Subject has had a myocardial infarction in last six months
Subject has any surgery planned during the screening, treatment or follow-up periods

Patients will be evaluated at screening to ensure that all criteria for study participation are met. These evaluations will include specific measures of psychosis severity, delirium, dementia, cardiovascular condition, and pregnancy status. Patients may be excluded from the study based on these assessments (and specifically if it is determined that their baseline health and psychiatric condition do not meet all protocol-specified entry criteria).

Treatment and study plan

pimavanserin tartrate (ACP-103)

Drug

10 mg, tablet, once daily by mouth, for six weeks

Primary outcomes

Antipsychotic Efficacy

Time frame: Each study visit (i.e. Days 1, 8, 15, 29 and 42)

Antipsychotic efficacy was defined as a decrease in the severity and/or frequency of hallucinations and/or delusions. This is measured as the change from baseline (Day 1) to Day 42 in the Scale for the Assessment of Positive Symptoms - Hallucinations and Delusions scales (SAPS-H+D) score for the ITT Analysis Set. The possible total score is 1 to 100 and a negative change in score indicates improvement.

Analysis Method: Analysis of Covariance (ANCOVA) and missing data was imputed using Last Observation Carried Forward (LOCF) method.

Secondary outcomes

Motor Symptoms Change From Baseline (Negative = Improvement)

Time frame: Each study visit (i.e. Days 1, 8, 15, 29 and 42)

Motor symptoms were measured using the change from baseline (Day 1) to Day 42 in the combined score of the Unified Parkinson's Disease Rating Scale (UPDRS) Part II (Activities of Daily Living) and Part III (Motor Examination). The total possible score is 0 to 160 and a negative change in score indicates improvement.

Analysis Method: ANCOVA, and missing data was imputed using LOCF method. The UPDRS Parts II+III score was analyzed by constructing 2-sided 95% confidence intervals (CIs) on the difference between each pimavanserin dose group and placebo mean change from baseline. Non-inferiority was concluded if the upper limit of the CI was less than or equal to 5.

Sponsors and collaborators

Lead sponsor

ACADIA Pharmaceuticals Inc.

Industry

Registry information

Important dates

Study start: 2008
Primary completion: 2009
Study completion: 2009
First posted: Apr 15, 2008
Registry last updated: May 19, 2017

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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Completed