RecruitingPhase 2NCT07029581

Phase 2, Efficacy and Safety Study of ACP-204 in Lewy Body Dementia Psychosis

A Double-Blind, Placebo-Controlled, Phase 2, Efficacy and Safety Study of ACP-204 in Adults With Lewy Body Dementia Psychosis (LBDP)


Sponsor

ACADIA Pharmaceuticals Inc.

Enrollment

180 participants

Start Date

Aug 6, 2025

Study Type

INTERVENTIONAL

Conditions

Summary

Multicenter, randomized, 6-week, double-blind, placebo-controlled, parallel-group, Phase 2 study in subjects with LBDP.


Eligibility

Min Age: 55 YearsMax Age: 84 Years

Inclusion Criteria6

  • Male or female ≥55 years to <85 years of age at the Screening visit living in the community or, if permitted by local regulations, in an institutionalized setting
  • Can provide written informed consent. If the subject is deemed not competent to provide informed consent, the following requirements for consent must be met:
  • The subject's LAR must provide written informed consent.
  • The subject must provide written (if capable) informed assent per local regulations.
  • Meets either the clinical criteria for Parkinson's disease with dementia as defined by the Movement Disorder Society's Task Force or the revised clinical criteria for probable dementia with Lewy bodies (DLB) by consensus criteria (Fourth consensus report of the DLB Consortium).
  • Meets the revised criteria for psychosis in major or mild neurocognitive disorder established by the International Psychogeriatrics Association

Exclusion Criteria5

  • Is in hospice, is receiving end-of-life palliative care, or is bedridden
  • Has psychotic symptoms that are primarily attributable to delirium, substance abuse, or a medical or psychiatric condition (e.g. schizophrenia, bipolar disorder, delusional disorder) other than dementia
  • Is actively suicidal at Visit 1 (Screening) or Visit 2 (Baseline)
  • Has a history or current evidence of a serious and/or significant unstable cardiovascular, respiratory, endocrine, gastrointestinal, renal, hepatic, hematologic, immunologic, genitourinary, psychiatric or neurologic (including stroke, chronic seizures, or clinically significant head injury) abnormality or disease or other medical disorder, including cancer or malignancies that could interfere with subject's ability to complete the study or comply with study procedures
  • Has other clinically significant CNS abnormalities that are most likely contributing to the dementia or findings on MRI or CT

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Interventions

DRUGACP-204

Provided as 1 capsule, to be taken orally once daily

DRUGPlacebo

Provided as 1 capsule, to be taken orally once daily


Locations(54)

ATP Clinical Research Inc.

Irvine, California, United States

Georgetown University

Washington D.C., District of Columbia, United States

Humanity Clinical Research, Corp

Aventura, Florida, United States

Parkinson's Disease and Movement Disorders Center of Boca Raton

Boca Raton, Florida, United States

K2 Medical Research Winter Garden LLC

Clermont, Florida, United States

University of Florida - Shands

Gainesville, Florida, United States

K2 Summit Research

Lady Lake, Florida, United States

Neurology Associates, P. A.

Maitland, Florida, United States

Homestead Associates in Research Inc

Miami, Florida, United States

Premier Clinical Research Institute, Inc.

Miami, Florida, United States

Advanced Clinical Research Network, Corp

Miami, Florida, United States

MediClear Medical & Research Center, Inc.

Miami, Florida, United States

Health Synergy Clinical Research, LLC

West Palm Beach, Florida, United States

Hawaii Pacific Neuroscience

Honolulu, Hawaii, United States

University of Kansas Medical Center Research Institute Inc.

Kansas City, Kansas, United States

Parkinson's Disease and Movement Disorders Center of Boca Raton d/b/a Parkinson's Research Center of America-Long Island

Commack, New York, United States

UNC Hospitals

Chapel Hill, North Carolina, United States

The Ohio State University, Energy Advancement and Innovation Center

Columbus, Ohio, United States

The Movement Disorder Clinic of Oklahoma

Tulsa, Oklahoma, United States

Abington Neurological Associates, LTD

Abington, Pennsylvania, United States

Horizon Clinical Research Group

Cypress, Texas, United States

The University of Texas Health Science Center San Antonio

San Antonio, Texas, United States

R and H Clinical Research

Stafford, Texas, United States

Virginia Commonwealth University (a public institution of higher education)

Richmond, Virginia, United States

EvergreenHealth

Kirkland, Washington, United States

Ambulatory for Individual Practice for Specialized Medical Care in Psychiatry - Dr Ivo Natsov

Cherven Bryag, Bulgaria

UMHAT Sv Georgi EAD

Plovdiv, Bulgaria

Medical Center SV.Naum

Sofia, Bulgaria

UMHAT "Alexandrovska" EAD

Sofia, Bulgaria

Medical Center Detsko Zdrave Branch Maestro Kanev

Sofia, Bulgaria

DCC Mladost M- Varna, OOD

Varna, Bulgaria

Fakultni nemocnice u sv. Anny v Brne

Brno, Czechia

NEUROHK s.r.o. Poliklinika Chocen a.s.

Choceň, Czechia

Vseobecna fakultni nemocnice v Praze

Prague, Czechia

Neuropsychiatrie s.r.o.

Prague, Czechia

Vestra Clinics s.r.o

Rychnov nad Kněžnou, Czechia

CHU de Toulouse- Hopital Purpan

Toulouse, Cedex 9, France

Gérontopôle Centre de Recherche Clinique

Toulouse, Cedex 9, France

Hopital Roger Salengro - CHU Lille

Lille, Nord, France

Hôpital Lariboisière, Histologie et CMRR

Paris, Paris, France

Hôpital des Chapennes

Villeurbanne, Rhone, France

Hopital Neurologique Bron

Bron, France

Hopital BROCA

Paris, France

CHU Strasbourg-Hopital Hautepierre

Strasbourg, France

CHRU de Tours- Hopital Bretonneau

Tours, France

CHRU de Nancy- Hospital de Brabois

Vandœuvre-lès-Nancy, France

Azienda Ospedaliera Univerrsitaria

Naples, Napoli, Italy

Azieda Socio Sanitaria Territoriale degli Spedali Civili di Brescia

Brescia, Italy

Università Campus Bio-Medico di Roma

Roma, Italy

Azienda Ospedaliera Universitaria Policlinico Umberto I - Università di Roma La Sapienza, UOI Day Hospital di Neurologia

Roma, Italy

Institute of Mental Health

Belgrade, Serbia

University Clinical Center of Serbia

Belgrade, Serbia

University Clinical Hospital Center Zvezdara

Belgrade, Serbia

University Clinical Center Kragujevac

Kragujevac, Serbia

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NCT07029581