Last Updated: April 30, 2026

CLINICAL TRIALS PROFILE FOR PIMAVANSERIN

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All Clinical Trials for Pimavanserin

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Trial ID	Title	Status	Sponsor	Phase	Start Date	Summary
NCT00477672 ↗	A Study of the Safety and Efficacy of Pimavanserin (ACP-103) in Patients With Parkinson's Disease Psychosis	Completed	ACADIA Pharmaceuticals Inc.	Phase 3	2007-06-01	This study will evaluate the safety and efficacy of two dose levels of pimavanserin (ACP-103) compared to placebo in patients with Parkinson's disease psychosis.
NCT00550238 ↗	A Study of the Safety and Tolerability of Pimavanserin (ACP-103) in Patients With Parkinson's Disease Psychosis	Completed	ACADIA Pharmaceuticals Inc.	Phase 3	2007-07-01	To assess the long-term safety and tolerability of ACP-103 in subjects with Parkinson's disease psychosis.
NCT00658567 ↗	A Study of Safety and Efficacy of Pimavanserin (ACP-103) in Patients With Parkinson's Disease Psychosis	Completed	ACADIA Pharmaceuticals Inc.	Phase 3	2008-03-01	This study will evaluate the safety and efficacy of two dose levels of pimavanserin (ACP-103) compared to placebo in patients with Parkinson's disease psychosis.
>Trial ID	>Title	>Status	>Sponsor	>Phase	>Start Date	>Summary

Clinical Trial Conditions for Pimavanserin

Condition Name

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Condition Name for Pimavanserin
Intervention	Trials
Parkinson's Disease Psychosis	9
Schizophrenia	5
Adjunctive Treatment of Major Depressive Disorder	4
[disabled in preview]	1
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Condition MeSH

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Condition MeSH for Pimavanserin
Intervention	Trials
Parkinson Disease	16
Mental Disorders	12
Psychotic Disorders	12
[disabled in preview]	1
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Clinical Trial Locations for Pimavanserin

Trials by Country

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Trials by Country for Pimavanserin
Location	Trials
United States	351
Russian Federation	21
China	19
Ukraine	16
Canada	12
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Trials by US State

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Trials by US State for Pimavanserin
Location	Trials
Florida	20
California	20
Texas	20
New York	18
Ohio	17
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Clinical Trial Progress for Pimavanserin

Clinical Trial Phase

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Clinical Trial Phase for Pimavanserin
Clinical Trial Phase	Trials
PHASE2	1
PHASE1	1
Phase 4	6
[disabled in preview]	0
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Clinical Trial Status

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Clinical Trial Status for Pimavanserin
Clinical Trial Phase	Trials
Completed	16
Recruiting	12
Not yet recruiting	8
[disabled in preview]	0
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Clinical Trial Sponsors for Pimavanserin

Sponsor Name

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Sponsor Name for Pimavanserin
Sponsor	Trials
ACADIA Pharmaceuticals Inc.	31
Baylor College of Medicine	2
VA Office of Research and Development	2
[disabled in preview]	0
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Sponsor Type

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Sponsor Type for Pimavanserin
Sponsor	Trials
Industry	34
Other	24
U.S. Fed	2
[disabled in preview]	0
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