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BMS-986446

Phase 2

Alzheimer Disease, Early Onset | Small molecule | Neurology |Bristol-Myers Squibb Company|Trials Updated: Sep 24, 2026

BMS-986446 development status

Highest phase Phase 2
Registered trials 4 across 1 sponsor since Oct 2023

BMS-986446 target and mechanism

ModalitySmall molecule

Also known as BMS-986446 IV, PRX005, Moponetug

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials2
Total Enrollment394

FDA Designations

No designations recorded

BMS-986446 clinical trials

BMS-986446 · 2 trials · 3 indications

Phase 2 1Phase 1 1
NCT06268886Study to Evaluate the Efficacy, Safety, and Tolerability of an Anti-MTBR Tau Monoclonal Antibody (BMS-986446) in Participants With Early Alzheimer's DiseaseAlzheimer Disease, Early Onset
ACTIVE NOT_RECRUITING310 Analytics
PHASE2ACTIVE NOT_RECRUITING
Study to Evaluate the Efficacy, Safety, and Tolerability of an Anti-MTBR Tau Monoclonal Antibody (BMS-986446) in Participants With Early Alzheimer's Disease
Alzheimer Disease, Early OnsetUnlock trial analytics

Study Endpoints

Primary Endpoints

Change from baseline in brain tau deposition as measured by tau positron emission tomography (PET)
At week 76
Absolute bioavailability estimated from geometric mean ratio (GMR) of area under the concentration-time curve from time zero extrapolated to infinite time (AUC(INF)) of BMS-986446 after subcutaneous (SC) infusion
Up to approximately 5 months
Absolute bioavailability estimated from GMR of AUC(INF) of BMS-986446 after intravenous (IV) infusion
Up to approximately 5 months
Maximum observed concentration (Cmax)
Up to approximately 5 months
Time of maximum observed concentration (Tmax)
Up to approximately 5 months
Area under the concentration-time curve from time zero to time of last quantifiable concentration (AUC(0-T))
Up to approximately 5 months
Area under the serum concentration-time curve from time zero to 672 hours (AUC(0-672))
Up to approximately 5 months
AUC(INF)
Up to approximately 5 months
Half-life (T-HALF)
Up to approximately 5 months
Apparent total body clearance in SC administration (CLT/F)
Up to approximately 5 months
Total body clearance in IV infusion (CLT)
Up to approximately 5 months
Apparent volume of distribution of terminal phase in SC administration (Vz/F)
Up to approximately 5 months
Volume of distribution of terminal phase (VZ)
Up to approximately 5 months

Secondary Endpoints

Change from baseline in Clinical Dementia Rating Scale Sum of Boxes (CDR-SB) score
At week 76
Change from baseline in integrated Alzheimer's Disease Rating Scale (iADRS) score
At week 76
Change from baseline in Alzheimer's Disease Assessment Scale-Cognitive subscale (ADASCog14) score
At week 76
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
PlaceboPLACEBO_COMPARATOR -
BMS-986446 Dose AEXPERIMENTAL -
BMS-986446 Dose BEXPERIMENTAL -
Panel A1: BMS986446EXPERIMENTAL -
Panel A2: BMS986446EXPERIMENTAL -
Panel A3: BMS986446EXPERIMENTAL -
Panel B1: BMS986446EXPERIMENTAL -
Panel B2: BMS986446EXPERIMENTAL -
Panel C1: BMS986446EXPERIMENTAL -

Interventions

NameTypeDescription
BMS-986446DRUGSpecified dose on specified days
PlaceboOTHERSpecified dose on specified days
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Eligibility Criteria

Age Range50 Years to 80 Years
SexALL
Healthy VolunteersNo
Study Sites176

Inclusion Criteria * Mild cognitive impairment (MCI) due to Alzheimer's disease (AD) or mild AD dementia consistent with the National Institute on Aging and the Alzheimer's Association (NIA-AA) core clinical criteria. * Global Clinical Dementia Rating (CDR) score of 0.5 to 1.0 and a CDR-Memory Box ...

Countries:United StatesAustraliaBelgiumCanadaJapanSingaporeSouth KoreaSpainSwedenUnited Kingdom
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Recent Changes (Last 90 Days)

LOWSep 24, 2026NCT07780383Status: NOT_YET_RECRUITING → RECRUITING
LOWSep 24, 2026NCT07780383Status: NOT_YET_RECRUITING → RECRUITING
LOWAug 21, 2026NCT07780383NEW_TRIAL: changed
LOWAug 21, 2026NCT07780383NEW_TRIAL: changed

Frequently asked questions about BMS-986446

What is BMS-986446 used for?

BMS-986446 is being developed for the treatment of early Alzheimer's disease, including early-onset Alzheimer's disease. It is an investigational therapy and has not been approved for any indication. Clinical development is focused on participants with early Alzheimer's disease, a population where intervention may help slow disease progression.

What does BMS-986446 target?

BMS-986446 targets the microtubule-binding region (MTBR) of tau. It is an anti-MTBR tau monoclonal antibody designed to bind this region of the tau protein. Tau pathology is a hallmark of Alzheimer's disease, and targeting MTBR tau is an approach under investigation for early Alzheimer's disease.

Who is developing BMS-986446?

BMS-986446 is being developed by Bristol-Myers Squibb Company, which trades on the New York Stock Exchange under the ticker symbol BMY. Bristol-Myers Squibb is the sponsor of the clinical trials evaluating the drug in healthy participants and in patients with early Alzheimer's disease.

What phase is BMS-986446 in?

BMS-986446 is in Phase 2 clinical development for early Alzheimer's disease. A Phase 2 trial is active but not recruiting, and a Phase 1 trial in healthy adults and participants with early Alzheimer's disease is currently recruiting. The drug remains investigational and has not been approved by the FDA.

What clinical trials is BMS-986446 in?

BMS-986446 is being evaluated in two registered clinical trials. The Phase 2 trial NCT06268886 is testing efficacy, safety, and tolerability in participants with early Alzheimer's disease across multiple countries. The Phase 1 trial NCT07780383 is assessing drug levels, absolute bioavailability, safety, tolerability, and immunogenicity in healthy adults and participants with early Alzheimer's disease in the United States.

Is BMS-986446 the same as BMS-986446 IV?

Yes, BMS-986446 IV is another name for BMS-986446. Both refer to the same investigational anti-MTBR tau monoclonal antibody being developed by Bristol-Myers Squibb for early Alzheimer's disease. The IV designation reflects intravenous administration of the drug in clinical trials.