Extension Study of Pimavanserin for the Adjunctive Treatment of Schizophrenia

  • End date
    Mar 22, 2024
  • participants needed
  • sponsor
    ACADIA Pharmaceuticals Inc.
Updated on 25 February 2022
adjunctive treatment


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

Condition Schizophrenia
Treatment Pimavanserin
Clinical Study IdentifierNCT03121586
SponsorACADIA Pharmaceuticals Inc.
Last Modified on25 February 2022


Yes No Not Sure

Inclusion Criteria

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 long-acting injectables
Abilify Maintena
Risperidone long-acting injection
Paliperidone extended release (ER) (9 mg)
Paliperidone palmitate
Invega Sustenna (156 mg)
Invega Trinza (546 mg)
Trevicta (350 mg)
Xeplion (100 mg)

Exclusion Criteria

Is taking a medication or drug or other substance that is prohibited according to this protocol
Patients will be evaluated at screening to ensure that all criteria for study
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)
participation are met. Patients may be excluded from the study based on these
A urine drug screen (UDS) result at Baseline that indicates the presence of any tested prohibited substance of potential abuse
assessments (and specifically if it is determined that their baseline health
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
and psychiatric condition do not meet all pre-specified entry criteria)
Subjects from Study 064 with a result indicating the presence of marijuana are not permitted in the study
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
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Additional screening procedures may be conducted by the study team before you can be confirmed eligible to participate.

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If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.

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Complete your scheduled study participation activities and then you are done. You may receive summary of study results if provided by the sponsor.

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