United Therapeutics completes enrollment in PPF lung fibrosis trial

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United Therapeutics Corporation Announces Full Enrollment of the TETON-PPF Study of Inhaled Treprostinil for the Treatment of Progressive Pulmonary Fibrosis

August 17, 2026 7:00 AM EDT

Approximately 200,000 patients in the United States have PPF, with limited treatment options

Topline data expected in the second half of 2027

SILVER SPRING, Md. & RESEARCH TRIANGLE PARK, N.C.--(BUSINESS WIRE)-- United Therapeutics Corporation (Nasdaq: UTHR) announced full enrollment of its TETON-PPF study evaluating the use of Tyvaso® (treprostinil) inhalation solution (nebulized Tyvaso) for the treatment of progressive pulmonary fibrosis (PPF). The TETON-PPF study enrolled 754 patients.

The rapid pace of enrollment underscores both the significant unmet need for new treatment options in PPF and the strong interest in... More