Pulmonary fibrosis: thinking outside of the lung.
Stavros Garantziotis, Mark P Steele, David A Schwartz
https://pubmed.ncbi.nlm.nih.gov/15286797/Actively Recruiting
Led by National Institute of Environmental Health Sciences (NIEHS) · Updated on 2026-07-28
37
Participants Needed
1
Research Sites
N/A
Total Duration
This research aims to evaluate the effects of the study drug hymecromone in adults with interstitial lung disease or lung fibrosis, conditions that cause thickening and scarring of lung tissue, often worsening over time and leading to serious outcomes. The study is a Phase 2a open-label trial enrolling up to 37 participants with progressive interstitial lung disease. The main goal is to assess how hymecromone influences serum hyaluronan levels and other related biomarkers. Participants will take hymecromone tablets, 400 mg twice daily 2 tablets in the morning and 2 at night, for 12 weeks. Those who wish may continue for an optional 12-week extension, making the maximum treatment period 24 weeks. The study includes at least seven clinic visits over five months, with repeated testing during the treatment and extension phases. During the study, participants will undergo various assessments including blood tests, heart function tests, sputum collection, spirometry to measure lung capacity, diffusion capacity tests for oxygen transfer, resting energy expenditure measurement, and a 6-minute walk test to evaluate physical function. Researchers will monitor safety, tolerability, lung function, symptoms, and biomarker changes throughout the study. The total participation duration is about five months, including the optional extension for some.
CONDITIONS
H01 in Adults With Interstitial Lung Disease (The SOLIS Study)
N
NIEHS Join A Study Recruitment Group
S
Stavros Garantziotis, M.D.
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National Institute of Environmental Health Sciences (NIEHS)
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | H01 investigational therapy | Current antifibrotic standard of care |
|---|---|---|
| What it is | Investigational oral therapy: hymecromone (H01) administered at 400 mg twice daily in adults with progressive ILD including idiopathic pulmonary fibrosis. | Established antifibrotic medications such as nintedanib or pirfenidone are the current first‑line therapies used to slow progression in progressive fibrotic interstitial lung disease. |
| Role in trial | All participants receive hymecromone as the investigational treatment in an open‑label design. | Antifibrotic therapy is not included in the study and represents the usual clinical management outside the trial. |
| Primary purpose | To evaluate hymecromone’s effect on serum hyaluronan reduction and clinical, functional, and biomarker changes in progressive ILD. | Used to slow lung function decline and disease progression in patients with idiopathic pulmonary fibrosis or other progressive fibrotic ILDs. |
| Evidence status | Early‑phase investigation; efficacy and safety are not yet established. | Supported by clinical guideline recommendations and systematic reviews showing slowed lung function decline. |
| Important risks | Risks are being evaluated; safety and tolerability data are not yet available. | Antifibrotic treatments are associated with gastrointestinal side effects, liver enzyme elevations, and photosensitivity. |
| Important limitations | Single‑group design limits ability to compare directly with standard care and sample size is small (approx. 37 participants). | While slowing progression, antifibrotic drugs do not reverse fibrosis and can cause tolerability issues. |
| Patient impact | Not yet evaluated; impact on symptoms or quality of life is unknown. | Evidence shows antifibrotics slow lung function decline and may preserve mobility or exercise capacity. |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
You may qualify if you...
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
At least 1 screening and baseline visit
Duration - 12 to 24 weeks
Participants take hymecromone tablets twice daily for 12 weeks to assess safety, tolerability, and effects on lung disease. Those willing may continue treatment for an additional 12 weeks in an optional extension phase.
At least 7 clinic visits over 5 months
Duration - Up to 24 weeks for those in the extension phase
Researchers monitor participants' lung function, symptoms, biomarkers, and safety after treatment through repeated tests and assessments.
Follow-up assessments during study visits
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
TREATMENT
Number of Arms
1
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Lead Sponsor