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FailedDiscontinued

SION-719

Cystic fibrosis

SIONSionna Therapeutics
Expected catalystTBA

Catalyst overview

Event details

Drug or asset
SION-719
Development stage
Failed
Event type
Discontinued
Indication
Cystic fibrosis

Research summary

What is being tracked?

This catalyst tracks a Failed discontinued for SION-719 in Cystic fibrosis . The expected timing is based on the latest available company guidance and may change.

Development notes

6/4/25- Reported Ph1 data. Planned advancement to Ph2a proof-of-concept trial. 10/21/25- Trial initiated. 10/24/25– PK data reported; additional readout in mid-2026. 03/02/26:- PreciSION CF Ph2a POC trial ongoing; topline data still expected in Mid-2026. 04/27/26:- Completed enrollment in PreciSION CF Ph2a POC (NCT07108153). Data expected Summer 2026. 05/12/26:- Enrollment completed in PreciSION CF Ph2a POC; topline data still expected summer 2026. Encore Ph1 data at ECFS. 08/06/26:- PreciSION CF Ph2a POC topline data remain on track for Summer 2026. 08/10/26:- PreciSION CF Ph2a POC missed sweat chloride endpoint; SION-719 not advancing as add-on.

Verification

Primary source

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

Open source

More from SION

Related pipeline programs

Phase 1

SION-451

Cystic fibrosis

View company pipeline

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