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NCT01518309

An Open-label Safety Study of Pimavanserin in Parkinson's Disease Patients

Completed Phase 2 Results posted Last updated 23 November 2020
What this trial tests

Phase 2 trial testing pimavanserin tartrate (ACP-103) in Parkinson's Disease Psychosis in 39 participants. Completed in 2 May 2013.

Timeline
17 November 2004
Primary endpoint
2 May 2013
2 May 2013

Quick facts

Lead sponsorACADIA Pharmaceuticals Inc.
PhasePhase 2
StatusCompleted
Study typeINTERVENTIONAL
Allocationna
Designsingle group
Maskingnone
Primary purposetreatment
Enrollment39
Start date17 November 2004
Primary completion2 May 2013
Estimated completion2 May 2013
Sites1 location across United States

Drugs / interventions tested

Conditions studied

Sponsor

ACADIA Pharmaceuticals Inc. — full company profile →

Who can join

Eligibility, any sex, with Parkinson's Disease Psychosis. Patients with the condition only — healthy volunteers not accepted.

Results — posted to ClinicalTrials.gov

Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.

Number (%) of Patients With Drug-related Treatment-emergent Adverse Events (AEs) Primary · From first to last study drug dose plus 30 days

Number (%) of patients with drug-related treatment-emergent AEs

GroupValue95% CI
Pimavanserin17

Adverse events — posted to ClinicalTrials.gov

Time frame: Study treatment (median treatment duration: 475 days). Reporting threshold: 5%. Adverse-event reports describe events observed during the trial — not all are caused by the drug.

Pimavanserin
Serious: 18/39 (46%)
Deaths: 8/39

Serious adverse events (21 terms)

ReactionSystemPimavanserin
Myocardial infarctionCardiac disorders
Hip fractureInjury, poisoning and procedural complications
Subdural haematomaInjury, poisoning and procedural complications
Parkinson's diseaseNervous system disorders
Cardiac failureCardiac disorders
DiarrhoeaGastrointestinal disorders
Inguinal herniaGastrointestinal disorders
PyrexiaGeneral disorders
BronchitisInfections and infestations
CellulitisInfections and infestations
Joint dislocationInjury, poisoning and procedural complications
DehydrationMetabolism and nutrition disorders
Intervertebral disc protrusionMusculoskeletal and connective tissue disorders
RhabdomyolysisMusculoskeletal and connective tissue disorders
Cerebrovascular accidentNervous system disorders
Depressed level of consciousnessNervous system disorders
AgitationPsychiatric disorders
DelusionPsychiatric disorders
Mental status changePsychiatric disorders
AspirationRespiratory, thoracic and mediastinal disorders
Pneumonia aspirationRespiratory, thoracic and mediastinal disorders
Other adverse events (65 terms — click to expand)

ReactionSystemPimavanserin
ConstipationGastrointestinal disorders
HallucinationPsychiatric disorders
AnaemiaBlood and lymphatic system disorders
Urinary tract infectionInfections and infestations
FallInjury, poisoning and procedural complications
Weight decreasedInvestigations
Pain in extremityMusculoskeletal and connective tissue disorders
Confusional stateNervous system disorders
Oedema peripheralGeneral disorders
Prothrombin time prolongedInvestigations
SomnolenceNervous system disorders
DepressionPsychiatric disorders
Orthostatic hypertensionVascular disorders
DiarrhoeaGastrointestinal disorders
DysphagiaGastrointestinal disorders
ContusionInjury, poisoning and procedural complications
ArthralgiaMusculoskeletal and connective tissue disorders
Muscle spasmsMusculoskeletal and connective tissue disorders
DyskinesiaNervous system disorders
AgitationPsychiatric disorders
Hallucination, visualPsychiatric disorders
NauseaGastrointestinal disorders
AstheniaGeneral disorders
PainGeneral disorders
CellulitisInfections and infestations
Skin lacerationInjury, poisoning and procedural complications
DehydrationMetabolism and nutrition disorders
Groin painMusculoskeletal and connective tissue disorders
Shoulder painMusculoskeletal and connective tissue disorders
InsomniaPsychiatric disorders
Urinary retentionRenal and urinary disorders
CoughRespiratory, thoracic and mediastinal disorders
HypertensionVascular disorders
HyponatraemiaMetabolism and nutrition disorders
FaecalomaGastrointestinal disorders
Gastrooesophageal reflux diseaseGastrointestinal disorders
FatigueGeneral disorders
ExcoriationInjury, poisoning and procedural complications
Blood bilirubin increasedInvestigations
Haematocrit decreasedInvestigations

Most-reported serious reactions: Myocardial infarction, Hip fracture, Subdural haematoma, Parkinson's disease, Cardiac failure, Diarrhoea, Inguinal hernia, Pyrexia.

Data from ClinicalTrials.gov NCT01518309 adverse events section.

Sponsor's own description

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).

Publications & conference data

4 peer-reviewed publications reference this trial (live from Europe PMC):

  1. Pimavanserin and Parkinson's Disease Psychosis: A Narrative Review.
    Rissardo JP, Durante Í, Sharon I, Fornari Caprara AL. · · 2022 · cited 14× · PMID 36291220 · DOI 10.3390/brainsci12101286
  2. Fountain of youth-Targeting autophagy in aging.
    Danics L, Abbas AA, Kis B, Pircs K. · · 2023 · cited 2× · PMID 37065462 · DOI 10.3389/fnagi.2023.1125739
  3. Sedation and sleep safety of pimavanserin for Parkinsons's disease psychosis: Review and exploratory analysis of clinical study data.
    Berrio A, Chrones L, Abler V, Hauser RA. · · 2025 · PMID 40487740 · DOI 10.1016/j.prdoa.2025.100342
  4. Pimavanserin: A Truly Effective Treatment for Parkinson’s Disease Psychosis? A Review of Interventions
    Heim B, Peball M, Krismer F, Djamshidian A, et al · · 2023

Verify or expand the search:

Other recruiting trials for Parkinson's Disease Psychosis

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Other ACADIA Pharmaceuticals Inc. trials

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Data sources for this page

Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT01518309.

Primary sources · FDA · ClinicalTrials.gov · EMA · SEC EDGAR · ChEMBL · Wikidata · full sourcing