New pill could slow deadly lung scarring – early trial underway
NCT ID NCT05571059
First seen Jun 27, 2026 · Last updated Sep 03, 2026 · Updated 2 times
Summary
This Phase 2 trial tests whether an oral drug called ifetroban can slow the decline in lung function for people with idiopathic pulmonary fibrosis (IPF), a progressive lung-scarring disease. About 128 adults aged 40 and older with IPF will receive either ifetroban or a placebo daily for 52 weeks. The main goal is to see if ifetroban reduces the drop in forced vital capacity (a measure of lung volume) compared to placebo.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- ifetroban
- What this could lead to
- If it works, this could point toward a new oral treatment to slow lung function decline in people with idiopathic pulmonary fibrosis.
- What could go wrong
- This is an early Phase 2 trial with only 128 participants, so results may not confirm benefit. The drug may not slow disease progression or could cause side effects.
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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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 128 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Jan 2024
- Expected to finish
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Jan 2028
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
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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40 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: 1. Male or female age 40 years or older 2. IPF Diagnosis: 1. Satisfying the 2022 American Thoracic Society/European Respiratory Society /Japanese Respiratory Society/Latin American Thoracic Association (ATS/ERS/JRS/ALAT) diagnostic criteria (Raghu 2022) confirmed by the investigator 2. UIP or probable UIP based on chest HRCT obtained within 2 months of Day 0, or historical lung biopsy consistent with UIP. 3. If receiving antifibrotic therapy, patients must be receiving a stable dose for ≥ 4 months prior to Day 0 and planning to stay on stable background therapy. Allowable antifibrotic therapy includes: pirfenidone, nintedanib, nerandomilast, pirfenidone with nerandomilast, or nintedanib with nerandomilast (combination of pirfenidone and nintedanib not allowed). If not receiving antifibrotic therapy, patients must be naive to each drug (pirfenidone, nintedanib, nerandomilast) or not have received either for at least 4 weeks prior to Day 0 and remain off background therapy with no intention to start or re-start. Changes in antifibrotic therapy are not allowed on study. 4. If receiving monotherapy for the treatment of pulmonary hypertension (e.g. phosphodiesterase 5 inhibitors, endothelin receptor antagonists or inhaled or oral prostanoid therapy), patients must be receiving a stable dose for ≥ 4 weeks prior to Day 0 and planning to remain on a stable dose throughout the study. 5. FVC ≥ 40% of predicted normal according to Global Lung Initiative (GLI) 6. Diffusion Capacity of Carbon Monoxide (DLCO) \[corrected for hemoglobin\] ≥ 25% to \<80% of predicted normal Exclusion Criteria: 1. Relevant airways obstruction (pre-bronchodilator Forced Expiratory Volume in one second to forced vital capacity ratio less than 70% (FEV1/FVC \< 0.7)) 2. In the opinion of the Investigator, other clinically significant pulmonary abnormalities. 3. Known significant PAH, defined as previous clinical or echocardiographic evidence of significant right heart failure, history of right heart catheterization showing a cardiac index \< 2 L/min/m2, or PAH requiring combination of PAH-specific therapies or any PAH parenteral therapy. 4. Emphysema ≥ 50% on HRCT assessed by the investigator, or the extent of emphysema is greater than the extent of fibrosis according to reported results from the most recent chest HRCT. 5. Acute IPF exacerbation within 6 weeks prior to screening and/or during the screening period (investigator-determined). 6. ILD associated with other known causes 7. Lower respiratory tract infection requiring antibiotics within 4 weeks prior to Day 0 and/or during the screening period. 8. Major surgery (major according to the investigator's assessment) performed within six weeks prior to Day 0 or planned during the course of the trial. (Being on a transplant list is allowed). 9. AST or ALT \> 1.5 x ULN, Bilirubin \> 1.5 x ULN, Creatinine clearance \< 30 mL/min calculated by Cockcroft-Gault formula. 10. Underlying chronic liver disease (Child Pugh A, B or C hepatic impairment). 11. Cardiovascular diseases, any of the following: 1. Severe hypertension, uncontrolled despite treatment (≥160/100 mmHg) 2. Myocardial infarction within 6 months of Day 0 3. Unstable cardiac angina 12. Bleeding risk, any of the following: 1. Known genetic predisposition to bleeding. 2. Patients who require: i. Fibrinolysis, full-dose therapeutic anticoagulation (e.g. vitamin K antagonists, direct thrombin inhibitors, direct oral anticoagulants, heparin, hirudin) ii. High dose antiplatelet therapy (\> 325 mg/day of aspirin; \> 75 mg/day ticlodipine or clopidogrel; any dose of other 2b3a anti-platelet agents) 13. History of hemorrhagic central nervous system (CNS) event within 12 months of Day 0 14. Any of the following within 3 months of Day 0: 1. Hemoptysis or hematuria 2. Active gastro-intestinal (GI) bleeding needing hospitalization/intervention or peptic ulcer disease 15. Coagulation parameters: International normalized ratio (INR) \>2, prolongation of prothrombin time (PT) and activated partial thromboplastin time (aPTT) by \>1.5 x ULN Note: Prophylactic low dose heparin or heparin flush as needed for maintenance of an indwelling intravenous device (e.g. less than or equal to enoxaparin 40 mg subcutaneously (SC) per day or heparin 5000 units SC every eight hours), low-dose FXa inhibitors (rivaroxaban/apixaban: 2.5mg twice daily (max 5mg/day), edoxaban: 15mg/day), as well as prophylactic use of antiplatelet therapy (e.g. acetyl salicylic acid \[ASA\] up to 325 mg/day, or clopidogrel at 75 mg/day, or equivalent doses of other antiplatelet therapy) are not prohibited. 16. History of thrombotic event (including stroke and transient ischemic attack) within 12 months of Day 0 17. Use of disease-modifying antirheumatic drugs, B-cell depleting therapies or immunosuppressive medications, within 6 months of Day 0. 18. Use of systemic corticosteroids equivalent to prednisone \>15mg/day within 2 weeks of Day 0. 19. Simultaneous use of pirfenidone and nintedanib at screening. 20. Other disease that may interfere with testing procedures or in the judgment of the Investigator may interfere with trial participation or may put the patient at risk when participating in this trial. 21. Any documented active or suspected malignancy within 5 years prior to Day 0, except appropriately treated basal cell carcinoma of the skin, in situ squamous cell carcinoma of the skin or "under surveillance" prostate cancer. 22. Evidence of active infection (chronic or acute) based on clinical exam or laboratory findings. 23. The patient has a confirmed infection with Severe Acute Respiratory Syndrome- Coronvirus-2 (SARS-CoV-2) within the four weeks prior to Day 0 or during the screening period. 24. Women who are pregnant, nursing, or who plan to become pregnant while in the trial. 25. Women of childbearing potential not willing or able to use highly effective methods of birth control per ICH M3 (R2) that result in a low failure rate of less than 1% per year when used consistently for 28 days prior to and three months after Investigational Medicinal Product (IMP) administration. Note: A woman is considered of childbearing potential, i.e. fertile, following menarche and until becoming post-menopausal unless permanently sterile. Permanent sterilization methods include hysterectomy, bilateral salpingectomy and bilateral oophorectomy 26. In the opinion of the Investigator, active alcohol or drug abuse. 27. Patients not able to understand or follow trial procedures including completion of self- administered questionnaires without help.
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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
18 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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Avera Research Institute
RECRUITINGSioux Falls, South Dakota, 57108, United States
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Baylor University Medical Center
RECRUITINGDallas, Texas, 75246, United States
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Beaumont Hospital, Royal Oak
RECRUITINGRoyal Oak, Michigan, 48073, United States
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Bend Memorial Hospital
RECRUITINGBend, Oregon, 97701, United States
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Biosolutions Clinical Research
ACTIVE_NOT_RECRUITINGLa Mesa, California, 91942, United States
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Icahn School of Medicine at Mount Sinai
RECRUITINGNew York, New York, 10029, United States
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Indiana University Health
RECRUITINGIndianapolis, Indiana, 46202, United States
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Mayo Clinic Jacksonville
RECRUITINGJacksonville, Florida, 32224, United States
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Miami VA Health System
RECRUITINGMiami, Florida, 33125, United States
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Northwestern Medicine
RECRUITINGChicago, Illinois, 60611, United States
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Premier Pulmonary Critical Care and Sleep Medicine
RECRUITINGDenison, Texas, 75020, United States
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Pulmonary & Sleep Specialists
ACTIVE_NOT_RECRUITINGDickson, Tennessee, 37055, United States
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Temple University Hospital
RECRUITINGPhiladelphia, Pennsylvania, 19140, United States
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UConn Health
RECRUITINGFarmington, Connecticut, 06030, United States
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UNC Chapel Hill
RECRUITINGChapel Hill, North Carolina, 27514, United States
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UW Health University Hospital
RECRUITINGMadison, Wisconsin, 53792, United States
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University of California San Francisco
RECRUITINGSan Francisco, California, 94143, United States
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University of Kansas
RECRUITINGKansas City, Kansas, 66160, United States
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University of Louisville
RECRUITINGLouisville, Kentucky, 40202, United States
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University of Rochester
RECRUITINGRochester, New York, 14642, United States
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