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Phase 2Data readout

BMS-986446 (PRX005)

Alzheimer's disease

PRTAProthena Corporation
Expected catalystJune 30, 2027Company guidance: Jun 30, 2027

Catalyst overview

Event details

Drug or asset
BMS-986446 (PRX005)
Development stage
Phase 2
Event type
Data readout
Indication
Alzheimer's disease

Research summary

What is being tracked?

This catalyst tracks a Phase 2 data readout for BMS-986446 (PRX005) in Alzheimer's disease. The expected timing is based on the latest available company guidance and may change.

Development notes

7/10/23 Opt-in rights to Bristol Myers Squibb & BMS to provide all updates moving forward. 8/8/24- Enrollment ongoing. 8/4/25- Ph2 TargetTau-1 trial: Primary completion in 2027. Ph1 SC formulation trial: Primary completion in H2 2025. 12/01/25:- Bristol Myers Squibb is conducting the Phase 2 TargetTau-1 trial in early Alzheimer's disease with primary completion expected in H1 2027 and a Phase 1 subcutaneous administration study with primary completion expected in H2 2025; BMS-986446 has also received Fast Track designation from the U.S. FDA. 02/19/26:- Phase 2 TargetTau-1 fully enrolled; primary completion H1 2027. Phase 1 subcutaneous study completed; Fast Track granted. 03/21/26:- AD/PD 2026 Ph1 single-dose study showed safe, well tolerated; no anti-drug antibodies. 05/07/26:- Phase 2 TargetTau-1 in early Alzheimer's ongoing; primary completion H1 2027; Phase 1 subcutaneous study completed; Fast Track confirmed. 08/06/26:- Moponetug name noted; TargetTau-1 Ph2 primary completion remains H1 2027.

Verification

Primary source

Confirm timing and program details against the company announcement or filing.

Open source

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Company

Prothena Corporation

PRTA · NasdaqGS
Industry
Biotechnology
Pipeline assets
7
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Updated Aug 23, 2026. Dates can change; this is not investment advice.

Disclaimer: Biotech Stock Intel is an independent research platform. Information is provided for informational purposes only and is not investment or medical advice. Always verify catalyst dates against primary sources and conduct your own research.
Biotech Stock Intel© 2026 Biotech Stock Intel
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