Pimavanserin vs. Quetiapine for Treatment of Parkinson's Psychosis
Public ClinicalTrials.gov record NCT04373317. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
CSP #2015 - Multicenter, Randomized, Double-blind Comparator Study of Antipsychotics Pimavanserin and Quetiapine for Parkinson''s Disease Psychosis (C-SAPP)
Study identification
- NCT ID
- NCT04373317
- Recruitment status
- Recruiting
- Study type
- Interventional
- Phase
- Phase 4
- Lead sponsor
- VA Office of Research and Development
- Federal
- Enrollment
- 358 participants
Conditions and interventions
Conditions
Interventions
- Pimavanserin Drug
- Quetiapine Drug
Drug
Eligibility (public fields only)
- Age range
- 40 Years and older
- Sex
- All
- Healthy volunteers
- Not listed
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Oct 23, 2022
- Primary completion
- Oct 23, 2026
- Completion
- Aug 23, 2027
- Last update posted
- Aug 27, 2025
2022 – 2027
United States locations
- U.S. sites
- 24
- U.S. states
- 19
- U.S. cities
- 23
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| Southern Arizona VA Health Care System, Tucson, AZ | Tucson | Arizona | 85723-0001 | Terminated |
| VA Loma Linda Healthcare System, Loma Linda, CA | Loma Linda | California | 92357-1000 | Recruiting |
| VA Palo Alto Health Care System, Palo Alto, CA | Palo Alto | California | 94304-1207 | Recruiting |
| San Francisco VA Medical Center, San Francisco, CA | San Francisco | California | 94121-1563 | Active, not recruiting |
| VA Greater Los Angeles Healthcare System, West Los Angeles, CA | West Los Angeles | California | 90073-1003 | Terminated |
| Rocky Mountain Regional VA Medical Center, Aurora, CO | Aurora | Colorado | 80045 | Recruiting |
| North Florida/South Georgia Veterans Health System, Gainesville, FL | Gainesville | Florida | 32608-1135 | Active, not recruiting |
| Edward Hines Jr. VA Hospital, Hines, IL | Hines | Illinois | 60141-3030 | Active, not recruiting |
| Lexington VA Medical Center, Lexington, KY | Lexington | Kentucky | 40502-2235 | Terminated |
| VA Ann Arbor Healthcare System, Ann Arbor, MI | Ann Arbor | Michigan | 48105-2303 | Active, not recruiting |
| Minneapolis VA Health Care System, Minneapolis, MN | Minneapolis | Minnesota | 55417 | Recruiting |
| St. Louis VA Medical Center John Cochran Division, St. Louis, MO | St Louis | Missouri | 63106-1621 | Active, not recruiting |
| New Mexico VA Health Care System, Albuquerque, NM | Albuquerque | New Mexico | 87108-5153 | Terminated |
| Syracuse VA Medical Center, Syracuse, NY | Syracuse | New York | 13210-2716 | Terminated |
| Asheville VA Medical Center, Asheville, NC | Asheville | North Carolina | 28805-2576 | Terminated |
| Louis Stokes VA Medical Center, Cleveland, OH | Cleveland | Ohio | 44106 | Recruiting |
| VA Portland Health Care System, Portland, OR | Portland | Oregon | 97239 | Recruiting |
| Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA | Philadelphia | Pennsylvania | 19104-4551 | Recruiting |
| Philadelphia MultiService Center, Philadelphia, PA | Philadelphia | Pennsylvania | 19106 | Recruiting |
| Tennessee Valley Healthcare System Nashville Campus, Nashville, TN | Nashville | Tennessee | 37212-2637 | Terminated |
| Michael E. DeBakey VA Medical Center, Houston, TX | Houston | Texas | 77030 | Recruiting |
| South Texas Health Care System, San Antonio, TX | San Antonio | Texas | 78229-4404 | Terminated |
| Hunter Holmes McGuire VA Medical Center, Richmond, VA | Richmond | Virginia | 23249-0001 | Terminated |
| VA Puget Sound Health Care System Seattle Division, Seattle, WA | Seattle | Washington | 98108-1532 | Active, not recruiting |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04373317, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Aug 27, 2025 · Synced Apr 20, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04373317 live on ClinicalTrials.gov.