Recent Updates
Recently added Catalysts

ACP-204

Phase 3

Alzheimer's Disease Psychosis | Small molecule | Neurology |ACADIA Pharmaceuticals Inc.|Last Updated: Jul 2, 2026

Success Probability
Subscribe to view
Market & Valuation
Subscribe to view
Trial Design
RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment1,826
FDA Designations
No designations recorded
Clinical trial landscape

ACP-204 · 4 trials · 2 indications

Phase 3 2Phase 2 2
NCT07095465Phase 3, Open Label Extension Study of ACP-204 in Lewy Body Dementia PsychosisLewy Body Dementia Psychosis
ENROLLING BY_INVITATION126 Analytics
NCT06194799ACP-204 in Adults With Alzheimer's Disease Psychosis Open Label Extension StudyAlzheimer's Disease Psychosis
ENROLLING BY_INVITATION752 Analytics
PHASE3ENROLLING BY_INVITATION
Phase 3, Open Label Extension Study of ACP-204 in Lewy Body Dementia Psychosis
Lewy Body Dementia PsychosisUnlock trial analytics
PHASE3ENROLLING BY_INVITATION
ACP-204 in Adults With Alzheimer's Disease Psychosis Open Label Extension Study
Alzheimer's Disease PsychosisUnlock trial analytics
Study Endpoints
Primary Endpoints
Proportion of subjects who experience treatment-emergent adverse events (TEAEs)
52 weeks
Treatment-emergent adverse events
52 Weeks

Number of Subjects With Adverse Events (AEs), Discontinuations Due to AEs and Serious AEs (SAEs) over 52 weeks of treatment. The Safety population consists of all subjects who received at least one dose of study drug in this study.

Change from Baseline in SAPS-LBDP total score at Week 6
6 weeks

Change from Baseline in Scale for the Assessment of Positive Symptoms- Lewy Body Dementia Psychosis (SAPS-LBDP) total score at Week 6

Scale for the Assessment of Positive Symptoms-Hallucinations and Delusions subscales (SAPS-H+D) total score change from baseline (Substudies 1, 2A, 2B)
From baseline to Week 6

The SAPS-H+D subscales are a measure of two psychotic symptoms: hallucinations and delusions. The SAPS-H+D total score is the sum of the scores of the Hallucinations and Delusions subscales. The hallucinations domain score (SAPS-H) is the sum of the 7 hallucinations item scores, and the delusions domain core (SAPS-D) is the sum of the 13 delusions item scores.

Secondary Endpoints
Clinical Global Impression-Improvement in the ADP context (CGI-I-ADP) score
52 Weeks
Clinical Global Impression-Severity in the ADP context (CGI-S-ADP) score
Baseline to Week 6
Unlock Study Endpoints
Study Design & Arms
AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
ACP-204EXPERIMENTALInitiation of treatment with ACP-204 at a dose of 30 mg once daily. During the trial, the dose may be adjusted, i.e. uptitration to 60 mg in case of suboptimal efficacy or subsequent down titration to 30 mg. Repeated titration steps are allowed.
ACP-204 30 mgEXPERIMENTALACP-204 dose of 30 mg once daily
ACP-204 60 mgEXPERIMENTALACP-204 dose of 60 mg once daily
PlaceboPLACEBO_COMPARATORPlacebo once daily
Interventions
NameTypeDescription
ACP-204DRUGProvided as 1 capsule, to be taken orally once daily
PlaceboDRUGProvided as 1 capsule, to be taken orally once daily
Unlock Study Design Details
Eligibility Criteria
Age Range55 Years to 84 Years
SexALL
Healthy VolunteersNo
Study Sites15

Inclusion Criteria: * The subject may benefit from long-term therapy with open-label ACP-204 treatment in the judgment of the Investigator * Subject has completed Visit 6 (EOT) of the antecedent ACP-204-012 study and did not have an early discontinuation from the antecedent study * Can complete all...

Countries:United StatesBulgariaCzechiaBrazilChileFranceItalyMexicoSerbiaSouth KoreaSpainTaiwan
Unlock Eligibility Criteria
Recent Changes (Last 90 Days)
LOWJul 2, 2026NCT06194799lastUpdatePostDate: changed
LOWJul 2, 2026NCT06194799lastUpdatePostDate: changed
LOWJun 30, 2026NCT07029581lastUpdatePostDate: changed
LOWJun 30, 2026NCT07029581lastUpdatePostDate: changed
LOWJun 30, 2026NCT07029581lastUpdatePostDate: changed
LOWJun 16, 2026NCT06159673lastUpdatePostDate: changed
LOWJun 16, 2026NCT06159673lastUpdatePostDate: changed
LOWJun 16, 2026NCT06159673lastUpdatePostDate: changed
LOWJun 12, 2026NCT06159673lastUpdatePostDate: changed
LOWJun 12, 2026NCT06159673lastUpdatePostDate: changed
LOWJun 8, 2026NCT06159673lastUpdatePostDate: changed
LOWJun 8, 2026NCT06159673lastUpdatePostDate: changed
LOWJun 8, 2026NCT06159673lastUpdatePostDate: changed
LOWJun 2, 2026NCT06194799lastUpdatePostDate: changed
LOWJun 2, 2026NCT06194799lastUpdatePostDate: changed
LOWJun 2, 2026NCT06194799lastUpdatePostDate: changed
LOWMay 29, 2026NCT07029581lastUpdatePostDate: changed
LOWMay 29, 2026NCT07095465lastUpdatePostDate: changed
LOWMay 29, 2026NCT07029581lastUpdatePostDate: changed
LOWMay 29, 2026NCT07095465lastUpdatePostDate: changed