Last Updated: May 14, 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.
NCT01174004 ↗	A Study of the Safety and Efficacy of Pimavanserin in Patients With Parkinson's Disease Psychosis	Completed	ACADIA Pharmaceuticals Inc.	Phase 3	2010-07-01	The purpose of this study is to evaluate the safety and efficacy of 40 mg pimavanserin compared to placebo in patients with Parkinson's disease psychosis (PDP).
NCT01518309 ↗	An Open-label Safety Study of Pimavanserin in Parkinson's Disease Patients	Completed	ACADIA Pharmaceuticals Inc.	Phase 2	2004-11-17	This is an open-label extension study to assess the long-term safety and tolerability of pimavanserin (ACP-103) in subjects with Parkinson's Disease Psychosis (PDP).
>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
Parkinson Disease Psychosis	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
Disease	6
[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]	16
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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]	4
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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]	2
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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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