Sionna Therapeutics releases Phase 2a SION-719, Phase 1 SION-451 dual-combination data presentation

Reuters2026/08/10 12:12

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Sionna Therapeutics released clinical topline results for its NBD1 stabilizer programs SION-719 Phase 2a in cystic fibrosis.
PreciSION CF missed the key activity endpoint, showing a -1 mmol/L placebo-adjusted sweat chloride change when SION-719 was added to Trikafta.
Development of SION-719 as an add-on to standard of care will not advance.
SION-451 dual-combination Phase 1 met predefined safety, tolerability, pharmacokinetic objectives; preferred regimen was SION-451 BID with SION-2222 QD.
Cash and cash equivalents were about $268 million as of 2Q26; capital-preservation actions planned while next steps are evaluated.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Sionna Therapeutics Inc. published the original content used to generate this news brief on August 10, 2026, and is solely responsible for the information contained therein.

Disclaimer: The content of this article solely reflects the author's opinion and does not represent the platform in any capacity. This article is not intended to serve as a reference for making investment decisions.

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Sionna Therapeutics releases Phase 2a SION-719, Phase 1 SION-451 dual-combination data presentation

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