Clinical trial Recruiting at 71 sites Observational Ages 18 and up

Registry for patients with pulmonary hypertension linked to interstitial lung disease

Official title: DeciPHer-ILD: A Real-world Patient Registry in Group 3 Pulmonary Hypertension Associated With Interstitial Lung Disease (PH-ILD)

Run by United Therapeutics · NCT06388421 · Data updated 2026-11-12

This study is collecting information from patients with pulmonary hypertension linked to interstitial lung disease to see how different treatments affect their health over time.

More Pulmonary Hypertension trials

Quick facts

Study typeObservational
Ages18 Years and up
SexAll
Enrollment900 (estimated)
SponsorUnited Therapeutics
Industry-sponsored
Locations71 sites (Birmingham, Alabama and 70 other locations)
StatusRecruiting
StartedJanuary 23, 2025
Main results expectedSeptember 1, 2030
Study endsNovember 30, 2030
Registry record updatedAugust 26, 2026
Trial IDNCT06388421 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults aged 18 and older with a confirmed diagnosis of interstitial lung disease and pulmonary hypertension.

Probably not a fit

Patients who do not have a diagnosis of interstitial lung disease or those who are not eligible for the specified cohorts may not benefit from this registry.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational registry aims to collect and analyze data from patients diagnosed with pulmonary hypertension associated with interstitial lung disease (PH-ILD). It will enroll patients into three cohorts based on their treatment status with Tyvaso/Tyvaso DPI and will follow them for up to five years. Assessments will include pulmonary function tests, imaging, vital signs, and various questionnaires to capture treatment patterns and clinical outcomes. The goal is to enhance understanding of the disease's epidemiology and treatment effects in real-world settings.

Why it matters

Potential benefit: If successful, this registry could provide valuable insights that lead to improved management and treatment strategies for patients with PH-ILD.

How similar studies have gone: Other observational studies in similar patient populations have shown success in capturing meaningful data, suggesting that this approach is viable.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Adults aged 18 years or older
2. Diagnosis of fibrotic ILD based on high-resolution computed tomography imaging, including but not limited to:

   1. Idiopathic interstitial pneumonia, including idiopathic pulmonary fibrosis
   2. Autoimmune ILD
   3. Chronic hypersensitivity pneumonitis
   4. Nonspecific interstitial pneumonia
   5. Occupational lung disease
   6. Combined pulmonary fibrosis and emphysema with fibrosis greater than the extent of emphysema on lung imaging as determined by the Investigator
3. For patients to be eligible for Cohorts 1 to 3: RHC confirmed PH (mean pulmonary artery pressure \>20 mmHg, pulmonary artery wedge pressure

   ≤15 mmHg, pulmonary vascular resistance \>2 WU).
4. For patients to be eligible for Cohort 1, they must not be receiving inhaled treprostinil at Baseline.
5. For patients to be eligible for Cohort 2, they must have initiated

Tyvaso/Tyvaso DPI at 1 of the following time points:

1. Baseline
2. ≤90 days prior to Baseline 6. For patients to be eligible for Cohort 3, they must be receiving Tyvaso/Tyvaso DPI at Baseline and for \>90 days prior to Baseline. 7. For patients to be eligible for Cohort 4: Prior RHC not meeting the definition of PH as described in Inclusion Criterion 3 but has a pulmonary artery wedge pressure ≤15 mmHg. 8. Co-enrollment in other observational or interventional studies is permitted. 9. Patient is willing and able to provide informed consent and complete surveys/questionnaires in English or Spanish.

Exclusion Criteria:

1. Confirmed diagnosis of Group 1, 2, 4, or 5 PH

   a. In cases in which a patient has a diagnosis of PH-ILD along with a concomitant diagnosis of another PH group (eg, Group 1), enrollment may be permitted at the Investigator's discretion if, in their clinical judgment, PH-ILD is the predominant driver of the patient's PH.
2. Confirmed diagnosis of Group 3 PH associated with lung diseases and or hypoxia other than fibrotic ILD, as outlined in Inclusion Criterion 2.
3. Patients receiving inhaled treprostinil (Yutrepia™) at Baseline. Patients receiving other forms of PH therapy will be eligible for enrollment.

Where it's running

  • University of Alabama at Birmingham
    Birmingham, Alabama, United States
    Recruiting
  • Banner Health - University Medical Center Phoenix
    Phoenix, Arizona, United States
    Recruiting
  • Cedars-Sinai Medical Center
    Los Angeles, California, United States
    Recruiting
  • UC Davis Health Medical Center
    Sacramento, California, United States
    Recruiting
  • University of Colorado - Anschutz Medical Campus
    Aurora, Colorado, United States
    Recruiting
  • National Jewish Health
    Denver, Colorado, United States
    Recruiting
Show 44 more locations
  • Pasquerilla Healthcare Center - Georgetown University
    Washington D.C., District of Columbia, United States
    Recruiting
  • University of Florida
    Gainesville, Florida, United States
    Recruiting
  • NCH Research Institute
    Naples, Florida, United States
    Recruiting
  • Advent Health Medical Group Advanced Lung Disease
    Orlando, Florida, United States
    Recruiting
  • Intercoastal Medical Group
    Sarasota, Florida, United States
    Recruiting
  • Tampa General Hospital/University of South Florida Health
    Tampa, Florida, United States
    Recruiting
  • Weston Hospital - Cleveland Clinic Florida
    Weston, Florida, United States
    Recruiting
  • Emory University
    Atlanta, Georgia, United States
    Recruiting
  • Southeastern Cardiology Associates
    Columbus, Georgia, United States
    Recruiting
  • Northwestern University
    Chicago, Illinois, United States
    Recruiting
  • Loyola University Medical Center
    Maywood, Illinois, United States
    Recruiting
  • Advocate Christ Medical Center
    Oak Lawn, Illinois, United States
    Recruiting
  • Ascension St. Vincent
    Indianapolis, Indiana, United States
    Recruiting
  • University of Kansas Medical Center
    Kansas City, Kansas, United States
    Recruiting
  • Norton Pulmonary Specialists
    Louisville, Kentucky, United States
    Recruiting
  • University Medical Center - New Orleans
    New Orleans, Louisiana, United States
    Recruiting
  • University of Maryland Medical Center
    Baltimore, Maryland, United States
    Recruiting
  • Corewell Health Beamont Troy Hospital
    Troy, Michigan, United States
    Recruiting
  • Mayo Clinic - Rochester
    Rochester, Minnesota, United States
    Recruiting
  • Washington University School of Medicine
    St Louis, Missouri, United States
    Recruiting
  • Dartmouth Hitchcock Medical Center
    Lebanon, New Hampshire, United States
    Recruiting
  • Morristown Medical Center
    Morristown, New Jersey, United States
    Recruiting
  • HMH Jersey Shore University Medical Ctr.
    Neptune City, New Jersey, United States
    Recruiting
  • University of New Mexico Health Sciences Center
    Albuquerque, New Mexico, United States
    Recruiting
  • Northwell Health
    New Hyde Park, New York, United States
    Recruiting
  • New York University Langone Medical Center
    New York, New York, United States
    Recruiting
  • New York Presbyterian Hospital - Weill Cornell Medicine
    New York, New York, United States
    Recruiting
  • University of Rochester Medicine
    Rochester, New York, United States
    Recruiting
  • University of North Carolina at Chapel Hill
    Chapel Hill, North Carolina, United States
    Recruiting
  • Duke University School of Medicine
    Durham, North Carolina, United States
    Recruiting
  • Pulmonix, LLC
    Greensboro, North Carolina, United States
    Recruiting
  • East Carolina University Health
    Greenville, North Carolina, United States
    Recruiting
  • Wakemed Health and Hospital
    Raleigh, North Carolina, United States
    Recruiting
  • University of Cincinnati Medical Center
    Cincinnati, Ohio, United States
    Recruiting
  • University Hospitals Cleveland Medical Center
    Cleveland, Ohio, United States
    Recruiting
  • The Cleveland Clinic
    Cleveland, Ohio, United States
    Recruiting
  • Ohio State Richard M. Ross Heart Hospital
    Columbus, Ohio, United States
    Recruiting
  • The University of Oklahoma Health Sciences Center
    Oklahoma City, Oklahoma, United States
    Recruiting
  • Oklahoma Heart Institute
    Tulsa, Oklahoma, United States
    Recruiting
  • Summit Health
    Bend, Oregon, United States
    Recruiting
  • Legacy Research Institute
    Portland, Oregon, United States
    Recruiting
  • Oregon Health & Science University
    Portland, Oregon, United States
    Recruiting
  • St. Luke's University Health Network
    Bethlehem, Pennsylvania, United States
    Recruiting
  • University of Pennsylvania
    Philadelphia, Pennsylvania, United States
    Recruiting

+21 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.