United Therapeutics TETON-1 study meets primary endpoint for lung disease treatment

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United Therapeutics Corporation Announces TETON-1 Pivotal Study of Tyvaso® Meets Primary Endpoint for Treatment of Idiopathic Pulmonary Fibrosis, Exceeding Impressive Treatment Effect Seen in TETON-2

March 30, 2026 7:00 AM EDT

Nebulized Tyvaso® (treprostinil) Inhalation Solution demonstrated superiority over placebo for the change in absolute forced vital capacity by 130.1 mL and reduced the risk of clinical worsening in patients with idiopathic pulmonary fibrosis, with positive results observed across all subgroups

Integrated analyses of TETON-1 and TETON-2 showed... More