RecruitingProgressive Pulmonary FibrosisInterstitial Lung Disease
Study of the Efficacy and Safety of Inhaled Treprostinil in Subjects With Progressive Pulmonary Fibrosis (TETON-PPF)
Eligible age
18+ yrs
Accepts
All genders
Locations
27 states
Healthy volunteers
No
See if you qualify for this study
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About this study
Study RIN-PF-305 is designed to evaluate the safety and efficacy of inhaled treprostinil in subjects with progressive pulmonary fibrosis (PPF) over a 52-week period.
Sponsor: United Therapeutics
You may qualify if…
- ✓ 1. Subject gives voluntary informed consent to participate in the study.
- ✓ 2. Subject is ≥18 years of age, inclusive, at the time of signing informed consent.
- ✓ 3. Subject has radiological evidence of pulmonary fibrosis of \>10% extent on an HRCT scan in the previous 12 months (confirmed by central review).
- ✓ 4. Subject has a diagnosis of PPF (other than IPF) that fulfills at least 1 of the following criteria for progression within 24 months of screening despite standard treatment of ILD, as assessed by the Investigator:
- ✓ 1. Clinically significant decline in % predicted FVC based on ≥10% relative decline
- ✓ 2. Marginal decline in % predicted FVC based on ≥5% to \<10% relative decline combined with worsening of respiratory symptoms
- ✓ 3. Marginal decline in % predicted FVC based on ≥5% to \<10% relative decline combined with increasing extent of fibrotic changes on chest imaging
- ✓ 4. Worsening of respiratory symptoms as well as increasing extent of fibrotic changes on chest imaging
You may not qualify if…
- ✕ 1. Subject is pregnant or lactating.
- ✕ 2. Subject has primary obstructive airway physiology (forced expiratory volume in 1 second/FVC \<0.70 at Screening) or greater extent of emphysema than fibrosis on HRCT (confirmed by central review).
- ✕ 3. Subject has a diagnosis of IPF.
- ✕ 4. Subject has shown intolerance or significant lack of efficacy to a prostacyclin or prostacyclin analogue that resulted in discontinuation or inability to effectively titrate that therapy.
- ✕ 5. Subject has received any PAH-approved therapy, including prostacyclin therapy (epoprostenol, treprostinil, iloprost, or beraprost; except for acute vasoreactivity testing), IP receptor agonists (selexipag), endothelin receptor antagonists, phosphodiesterase type 5 inhibitors (PDE5-Is), soluble guanylate cyclase stimulators, or activin signaling inhibitors (sotatercept) within 60 days prior to Baseline. As needed use of a PDE5-I for erectile dysfunction is permitted, provided no doses are taken within 48 hours prior to any study-related efficacy assessments.
- ✕ 6. Subject is receiving \>10 L/min of oxygen supplementation by any mode of delivery at rest at Baseline.
- ✕ 7. Exacerbation of ILD or active pulmonary or upper respiratory infection within 30 days prior to Baseline. Subjects must have completed any antibiotic or steroid regimens for treatment of the infection or acute exacerbation more than 30 days prior to Baseline to be eligible. If hospitalized for an acute exacerbation of ILD or a pulmonary or upper respiratory infection, subjects must have been discharged more than 90 days prior to Baseline to be eligible.
- ✕ 8. Subject has uncontrolled cardiac disease, defined as myocardial infarction within 6 months prior to Baseline or unstable angina within 30 days prior to Baseline.
Where it's recruiting
Alabama
Birmingham
Arizona
Phoenix
California
Los Angeles · Newport Beach · Orange · Redding …
District of Columbia
Washington D.C.
Florida
Jacksonville · Tampa · Weston
Georgia
Atlanta
Illinois
Chicago · Maywood
Kansas
Kansas City
Kentucky
Lexington · Louisville
Louisiana
New Orleans
Maryland
Baltimore · Silver Spring
Massachusetts
Boston · North Dartmouth
Source: ClinicalTrials.gov · NCT05943535 · last updated 2026-07-13