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Phase 1Update

SION-451

Cystic fibrosis

SIONSionna Therapeutics
Expected catalystTBA

Catalyst overview

Event details

Drug or asset
SION-451
Development stage
Phase 1
Event type
Update
Indication
Cystic fibrosis

Research summary

What is being tracked?

This catalyst tracks a Phase 1 update for SION-451 in Cystic fibrosis . The expected timing is based on the latest available company guidance and may change.

Development notes

6/4/25- Initiate Ph1 in healthy volunteers in H2 2025. 8/25/25- First patient dosed. 10/24/25- PK data reported. Topline data in mid-2026. 03/02/26:- Ph1 dual-combination trial with SION-2222 and SION-109 ongoing; topline data still expected Mid-2026. 05/12/26:- NCT07035990 Ph1 dual-combination trial ongoing; topline data still expected summer 2026. Encore Ph1 data at ECFS. 08/06/26:- NCT07035990 Ph1 dual-combination topline data remain on track for Summer 2026. 08/10/26:- Ph1 dual-combo data met safety/PK goals; SION-451+SION-2222 preferred. Next steps under evaluation.

Verification

Primary source

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

Open source

More from SION

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SION-719

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Company

Sionna Therapeutics

SION · NasdaqGM
Industry
Biotechnology
Pipeline assets
2
View SION research

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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
AboutMethodologyTermsPrivacy