Extension Study of Pimavanserin for the Adjunctive Treatment of Schizophrenia

Stopped early · Phase 3

Conditions studied: Schizophrenia

In brief

To evaluate the long-term safety and tolerability of pimavanserin after 52 weeks of adjunctive treatment in subjects with schizophrenia

Key facts

Study ID

NCT03121586

Run by

ACADIA Pharmaceuticals Inc.

People needed

995

Starts

2017-01-01

Expected to finish

2024-05-30

Last updated by the study team

2025-08-24

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Patient is able to understand and provide signed informed consent
• Has a caregiver or some other identified responsible person (e.g., family member, social worker, caseworker, or nurse) considered reliable by the Investigator in providing support to the subject to help ensure compliance with study treatment, study visits, and protocol procedures and who is also able to provide input helpful for completing study rating scale
• Is completing the Week 6 visit in Study ACP-103-034 or the Week 26 visit in Study ACP-103-038 or 064 while continuing to take his/her assigned dose of blinded study drug and may, in the Investigator's opinion, benefit from continued adjunctive treatment with pimavanserin to a antipsychotic
• If the subject is female, she must not be pregnant or breastfeeding. She must also be of non-childbearing potential (defined as either surgically sterilized or at least 1 year postmenopausal) or must agree to use two clinically acceptable methods of contraception
• The main background antipsychotic with which the subject is being treated must continue to be on one of the antipsychotics listed below:
• Aripiprazole
• Aripiprazole long-acting injectables:
• Abilify Maintena®
• Aristada®
• Asenapine
• Risperidone
• Risperidone long-acting injection
• Olanzapine
• Paliperidone extended release (ER) (≤9 mg)
• Paliperidone palmitate
• Invega Sustenna® (≤156 mg)
• Invega Trinza® (≤546 mg)
• Trevicta® (≤350 mg)
• Xeplion® (≤100 mg)
• Lurasidone
• Cariprazine
• Brexpiprazole
• Asenapine

You may not qualify if…

• Patient is judged by the Investigator or the Medical Monitor to be inappropriate for the study (e.g., significantly noncompliant in Studies ACP-103-034, -038, or -064)
• A urine drug screen (UDS) result at Baseline that indicates the presence of any tested prohibited substance of potential abuse
• Subjects from Studies 034 and 038 with a result indicating the presence of marijuana are permitted, if allowed by medical regulations, if they agree to abstain from marijuana use during the study and the medical monitor approves the subject's participation
• Subjects from Study 064 with a result indicating the presence of marijuana are not permitted in the study
• Is taking a medication or drug or other substance that is prohibited according to this protocol
• Known family or personal history or symptoms of long QT syndrome or risk factors for torsade de pointes and/or sudden death, including symptomatic bradycardia, hypokalemia or hypomagnesemia, and the presence of congenital prolongation of the QT interval
• Patient has current evidence of a serious and/or unstable psychiatric, neurologic, cardiovascular, respiratory, gastrointestinal, renal, hepatic, hematologic, or other medical disorder, including cancer or malignancies, which would affect the patient's ability to participate in the study.
• Patients will be evaluated at screening to ensure that all criteria for study participation are met. 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 pre-specified entry criteria).

Where it is running

• 156-Woodland International Research Group, LLC — Little Rock, Arkansas, United States
• 111-Woodland Research Northwest, LLC — Rogers, Arkansas, United States
• 167-CITrials - Bellflower — Bellflower, California, United States
• 105-ProScience Research Group — Culver City, California, United States
• 123-Synergy San Diego — Lemon Grove, California, United States
• 164-Artemis Institute for Clinical Research — San Diego, California, United States
• 165-CITrials — Santa Ana, California, United States
• 108-Collaborative Nueroscience Network, LLC — Torrance, California, United States
• 125-Galiz Research — Hialeah, Florida, United States
• 137-Innovative Clinical Research, Inc. — Lauderhill, Florida, United States
• 146-Premier Clinical Research Institute, Inc. — Miami, Florida, United States
• 162-Synexus Clinical Research, Inc. — Atlanta, Georgia, United States
• 168-Atlanta Center for Medical Research — Atlanta, Georgia, United States
• 102-Northwest Behavioral Research Center — Marietta, Georgia, United States
• 114-Northwestern University — Chicago, Illinois, United States
• 101-American Medical Research — Chicago, Illinois, United States
• 130-Alexian Brothers Center for Psychiatric Research — Hoffman Estates, Illinois, United States
• 118-Lake Charles Clinical Trials — Lake Charles, Louisiana, United States
• 124-Altea Research Institute — Las Vegas, Nevada, United States
• 141-Hassman Research Institute — Berlin, New Jersey, United States
• 153-Albuquerque Neuroscience Inc. — Albuquerque, New Mexico, United States
• 104-Neurobehavioral Research, Inc. — Cedarhurst, New York, United States
• 140-Synexus Clinical Research, Inc - 140 — Jamaica, New York, United States
• 128-Finger Lakes Clinical Research — Rochester, New York, United States
• 171-Alea Research Institute — Phoenix, Arizona, United States

Full record on ClinicalTrials.gov

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