United Therapeutics' Tyvaso meets primary endpoint in IPF study

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United Therapeutics Corporation Announces TETON-1 Study of Tyvaso Published in The New England Journal of Medicine and Presented at ATS 2026

May 18, 2026 4:15 PM EDT

The pivotal TETON-1 phase 3 study of nebulized Tyvaso® (treprostinil) Inhalation Solution in idiopathic pulmonary fibrosis (IPF) preserved lung function as measured by absolute forced vital capacity (FVC) and demonstrated reduced risk of a clinical worsening event, meeting both its primary endpoint and a key secondary endpoint with statistical significance, respectively

In combined analyses of TETON-1 and TETON-2 also included in the NEJM publication and presented at ATS nebulized Tyvaso achieved statistically significant... More