ACP-204 is named as an intervention in 4 current clinical trials in our USA register. 2 are recruiting patients now. The most common phase is Phase 3. The lead sponsor is ACADIA Pharmaceuticals Inc. The most-studied condition is Lewy Body Dementia Psychosis.
| Study | Phase | Status | Lead sponsor | Registers |
|---|---|---|---|---|
|
ACP-204 in Adults With Alzheimer's Disease Psychosis
NCT06159673 · ClinicalTrials.gov ↗ · Alzheimer's Disease Psychosis
|
Phase 2/3 | Recruiting | ACADIA Pharmaceuticals Inc. | USA |
|
Phase 2, Efficacy and Safety Study of ACP-204 in Lewy Body Dementia Psychosis
NCT07029581 · Lewy Body Dementia Psychosis
|
Phase 2 | Recruiting | ACADIA Pharmaceuticals Inc. | USA |
|
ACP-204 in Adults With Alzheimer's Disease Psychosis Open Label Extension Study
NCT06194799 · ClinicalTrials.gov ↗ · Alzheimer's Disease Psychosis
|
Phase 3 | By invitation | ACADIA Pharmaceuticals Inc. | USA |
|
Phase 3, Open Label Extension Study of ACP-204 in Lewy Body Dementia Psychosis
NCT07095465 · ClinicalTrials.gov ↗ · Lewy Body Dementia Psychosis
|
Phase 3 | By invitation | ACADIA Pharmaceuticals Inc. | USA |
Registers list studies that are recruiting, about to open, active but closed to enrolment, or enrolling by invitation. The UK and USA registers cover industry-sponsored studies only. Trial titles and statuses are copied from the registry as published.
| Lead sponsor | Trials |
|---|---|
| ACADIA Pharmaceuticals Inc. | 4 |
| Register | Trials | Recruiting |
|---|---|---|
| Clinical trials in USA | 4 | 2 |
A trial with sites in more than one country appears in each of those registers.
4 current trials in our USA register name ACP-204 as a drug or biological intervention, as of the registry sync on 25 September 2026. Completed and withdrawn studies are not counted.
Yes. 2 of the 4 trials are recruiting: 2 with sites in USA. Eligibility and site contacts are on each trial's record. Only the study team can confirm whether a patient is eligible.
The lead sponsor is ACADIA Pharmaceuticals Inc. The number in brackets is how many trials each organisation leads.
Every trial, status, phase and sponsor on this page is copied from public ClinicalTrials.gov records by a daily sync. Nothing here describes how ACP-204 works or whether it is effective, and it is not medical advice.
Everything on this page is copied from public ClinicalTrials.gov registry records — it is not written from memory, and nothing here describes how ACP-204 works or whether it is effective. Each trial links to its own record so you can check it yourself.
This page is built automatically: a daily sync job reads the registry records behind our country trial registers, collects every trial that lists ACP-204 (or a registered synonym) as a drug or biological intervention, and tabulates the registry fields directly. Placebos and generic comparators are excluded. There is no AI drafting and no per-compound editorial pass, and the page has not been clinically reviewed. The “last verified” date above is the timestamp of that sync, not a review date. Our general editorial approach is described in our editorial standards and corrections policy. The ClinicalTrials.gov data on this page was last retrieved on 25 Sep 2026.