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StocksMediumUpdated•Originally published 30 March 2026•Updated 31 March 2026•

1 min read

United Therapeutics Stock Surges 12.5% on Positive TETON-1 Study Results for Tyvaso

Fortified uniQure building, fences, caution tape, security cameras. FDA buildings, US flags, justice symbols. Charts on tablets and papers.

Key Facts

1The TETON-1 pivotal study evaluating Tyvaso for the treatment of idiopathic pulmonary fibrosis (IPF) met its primary efficacy endpoint.

2 months ago

Version History

1 additional source confirmed this story

Version 12 months ago

What changed: Added the 12.5% stock price surge and confirmed the TETON-1 study as a Phase III trial paving the way for an FDA filing.

United Therapeutics (UTHR) stock surged by 12.5% following the announcement of successful results from its TETON-1 study for nebulized Tyvaso. The company confirmed that TETON-1 was a Phase III trial, effectively paving the way for a potential regulatory filing with the FDA. The study met its primary efficacy endpoint in treating patients with idiopathic pulmonary fibrosis (IPF), a chronic lung disease. Data revealed a significant improvement in absolute forced vital capacity (FVC) by 130.1 mL compared to the placebo group. Notably, these Phase III results exceeded the treatment effects observed in the previous TETON-2 study. Analysts view this clinical success and the subsequent market reaction as a major fundamental catalyst for the company’s growth in the biotech sector.