Can an inhaled drug stop lung blood vessels from stiffening during exercise?
NCT ID NCT07837830
First seen Sep 24, 2026 · Last updated Sep 25, 2026 · Updated 1 time
Summary
Researchers are testing whether inhaled treprostinil, added to standard care, improves blood flow through the lungs during exercise in adults with interstitial lung disease or connective tissue disease. Participants have high blood pressure in the lungs only when they exercise, not at rest. The trial compares those who receive the drug plus standard care with those who receive standard care alone, following both groups for 6 months with an optional extension to 12 months. The main measure is change in exercise pulmonary vascular resistance, a sign of how well lung blood vessels relax during activity.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- inhaled treprostinil
- What this could lead to
- If it works, this could point toward earlier treatment for people whose lung or connective tissue disease causes high blood pressure in the lungs only during exercise.
- What could go wrong
- This is a small, early-phase pilot with 32 participants, so results may not hold in larger studies. Inhaled treprostinil can cause coughing, throat irritation, headache, and low blood pressure, and some participants may not tolerate the full dose.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Early phase 1
The earliest testing in people: a first look at safety, in a very small group.
- Participants
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About 32 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Sep 2026
An estimate. Start dates often move.
- Expected to finish
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Jun 2028
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Age ≥18 years * ILD diagnosis or CTD diagnosis * WHO Functional Class II-III * Resting RHC: * mPAP ≤20 mmHg * PVR ≤2 WU * PAWP ≤15 mmHg * Exercise-induced pulmonary hypertension on iCPET * Able to provide informed consent Exclusion Criteria: * Resting pulmonary hypertension * Significant left heart disease * CTEPH * Acute PE within 6 months * Current PAH-targeted therapy * Pregnancy or breastfeeding * Severe renal or hepatic impairment * Inability to perform exercise testing * Contraindication to RHC * Treprostinil hypersensitivity
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
2 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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The Valley Hospital
RECRUITINGParamus, New Jersey, 07652, United States
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Valley Medical Group Pulmonary Hypertension Clinic
RECRUITINGParamus, New Jersey, 07652, United States
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