Neurocognitive Disorders

Alzheimer's disease drug pipeline

  • ICD-11 8A20
  • MeSH D000544

Subtypes: Agitation in Alzheimer's disease, Alzheimer's disease psychosis

7 compounds from 4 companies are in active clinical development for alzheimer's disease.

7Compounds
4Companies
0Phase 3+
5Upcoming readouts
199Trials recruiting
  • Phase 2 5
  • Discontinued 2

Mechanisms: Small molecule (4) · Biologic (3)

Pipeline data compiled July 2026 · every fact sourced.

Upcoming readouts & recent results

  • By end-2026AnticipatedJNJ-2056 (ACI-35.030)Topline dataNCT06544616

    Phase 2b ReTain (NCT06544616): primary completion estimated 22 Dec 2026 (ClinicalTrials.gov); timing may shift given the Feb-2026 recruitment pause.

  • 2H 2026AnticipatedMK-1167Topline dataNCT06721156

    Phase 2 topline efficacy/safety of MK-1167 (vs placebo) on cognition in mild-to-moderate Alzheimer's disease dementia (MK-1167-008)

  • 2H 2027AnticipatedITI-1284 (deulumateperone)Topline dataNCT06540833

    Anticipated Phase 2 topline for ITI-1284 in psychosis associated with Alzheimer's disease (NCT06540833); primary completion targeted September 2027.

  • January 2029AnticipatedLHP588Registry resultsNCT06847321

    ClinicalTrials.gov estimated primary completion of the Phase 2 SPRING trial (NCT06847321) of LHP588 25 mg and 50 mg vs placebo in P. gingivalis-positive mild-to-moderate Alzheimer's disease: January 2029 (estimated study completion 2029-03-15).

  • 2029AnticipatedMK-2214Topline dataNCT07033494

    Anticipated Phase 2 readout in early Alzheimer's disease: change in tau PET SUVr (primary), per estimated primary completion April 2029.

  • 2026-03-21ReportedPosdinemabFull resultsmissedNCT04619420

    AuTonomy Phase 2b full results (AD/PD 2026): posdinemab missed the primary iADRS endpoint - no significant difference for either dose vs placebo at week 104; key secondaries also negative; tau-PET suggested slowed neurofibrillary-tangle accumulation. Program discontinued.

  • 2026-02-17ReportedJNJ-2056 (ACI-35.030)Interim analysispendingNCT06544616

    Phase 2b ReTain (NCT06544616): Janssen temporarily paused recruitment (17 Feb 2026); voluntary, not safety-related, pre-specified interim immunogenicity threshold met; dosing/follow-up of enrolled participants continues.

  • 2025-12-01ReportedMK-2214Full resultsmetNCT05466422

    Phase 1 first-in-human MK-2214 data at CTAD 2025: favorable safety/PK and CSF pS413 tau reductions consistent with near-saturating target engagement; FDA Fast Track granted.

  • 2025-12-01ReportedMK-1167Interim analysis

    Phase 1 healthy-volunteer biomarker data: single doses of MK-1167 modulate prefrontal-cortex glutamate metabolism measured by 13C-magnetic resonance spectroscopy (presented at CTAD 2025)

See the full catalyst calendar →

Compounds in development (7)

CompoundCompanyPhaseStatusMechanism
ITI-1284 (deulumateperone)Johnson & JohnsonPhase 2Recruiting5-HT2A Antagonist
JNJ-2056 (ACI-35.030)Fast TrackJohnson & JohnsonPhase 2ActiveTau (pT217) Agonist
LHP588Lighthouse Pharmaceuticals, Inc.Phase 2RecruitingLysine-gingipain (Kgp) Inhibitor
MK-1167Merck & Co., Inc.Phase 2Activealpha7 nAChR PAM
MK-2214Fast TrackMerck & Co., Inc.Phase 2RecruitingTau (pT217) Inhibitor
Atuzaginstat (COR388)Cortexyme, Inc. (now Quince Therapeutics, Inc.)DiscontinuedDiscontinuedKgp Inhibitor
PosdinemabFast TrackJohnson & JohnsonDiscontinuedDiscontinuedTau (pT217) Inhibitor

Also in development for subtypes of Alzheimer's disease

Trials recruiting now (151)

151 drug-interventional alzheimer's disease trials recruiting now, of 1,537 registered interventional trials. Browse all on ClinicalTrials.gov →

Showing the 12 most advanced of 151 recruiting drug trials · see all on ClinicalTrials.gov →

Frequently asked

How many drugs are in development for alzheimer's disease?
7 compounds from 4 companies are in active clinical development for alzheimer's disease.
What are the next alzheimer's disease trial readouts?
Upcoming catalysts include JNJ-2056 (ACI-35.030) (By end-2026), MK-1167 (2H 2026), ITI-1284 (deulumateperone) (2H 2027) and LHP588 (January 2029).
How many clinical trials are recruiting for alzheimer's disease?
151 drug-interventional alzheimer's disease trials are currently recruiting participants, out of 1,537 registered interventional trials.