NCT06325696 · National Institute of Environmental Health Sciences (NIEHS)
H01 in Adults With Interstitial Lung Disease (The SOLIS Study)
What this study is about
Background: Interstitial lung disease affects the tissues that aid the transfer of oxygen and carbon dioxide between the air and the bloodstream. The disease can cause fibrosis, a thickening and scarring of lung tissue. Fibrosis often continues getting worse, and most people with this disease die in 3 to 5 years.
View original scientific description
Background: Interstitial lung disease affects the tissues that aid the transfer of oxygen and carbon dioxide between the air and the bloodstream. The disease can cause fibrosis, a thickening and scarring of lung tissue. Fibrosis often continues getting worse, and most people with this disease die in 3 to 5 years. Objective: To test a study drug (hymecromone) in people with interstitial lung disease or lung fibrosis. Eligibility: People aged 18 years and older with interstitial lung disease or lung fibrosis. Design: Participants will have at least 7 clinic visits over 5 months. Participants will have screening and baseline visits. They will have blood tests and tests of their heart function. They will give a sputum sample. Other tests will include: Spirometry: Participants will breathe in and out through a mouthpiece to measure how much air they can hold in their lungs and how hard they can breathe. Diffusion capacity of lungs for carbon monoxide: Participants will breathe in a gas that contains a small amount of carbon monoxide. Then they will breathe through a mouthpiece. This test measures how well oxygen moves from the air into the blood. Resting energy expenditure. Participants will lie still for 30 minutes with a clear dome over their head. This test measures the calories their body burns at rest. 6-minute walk test. Participants will walk at their normal pace for 6 minutes. Their vital signs and blood oxygen levels will be checked. Hymecromone is a tablet taken by mouth. Participants will take 2 tablets every morning and 2 tablets every night for 12 weeks. Tests will be repeated at study visits.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- In order to be eligible to participate in this study, an individual must meet all of the following criteria:
- Ability of subject to understand, and the willingness to sign a written informed consent document and comply with requirements of the study
- Stated willingness to comply with all study procedures and availability for the duration of the study
- Male or Female participants ages \>18 years
- MD diagnosis of Idiopathic Pulmonary Fibrosis or other progressive ILD as defined previously
- DLCO\>30% and FVC\>45%
- Subjects in reproductive age who are heterosexually active must use an acceptable method of contraception: condoms (male or female) with or without a spermicidal agent, diaphragm or cervical cap with spermicide, IUD, or Hormone-based contraceptive
- Agreement to adhere to Lifestyle Considerations throughout study duration
Exclusion criteria
- An individual who meets any of the following criteria will be excluded from participation in this study:
- Active on lung transplantation list
- On supplemental oxygen at rest
- Evidence of an acute respiratory infection or exacerbation of pulmonary fibrosis
- Known diagnosis of celiac disease or wheat or gluten allergies
- Cirrhosis or active viral or non-viral hepatitis: Bilirubin, AST and ALT values higher than twice the upper range of normal, or a Child-Pugh score of 7 or more
- Subjects with history of active Inflammatory Bowel Disease, dysphagia, achalasia, or difficulty swallowing capsules, tablets or pills
- Subjects with significant renal impairment defined as eGFR lower than 40 ml/min.
- Subjects with a baseline corrected Fridericia's QT interval (QTcF) \>450ms or baseline ECG abnormalities which, in the opinion of the study physician, are clinically significant and would place the participant at increased risk for adverse effects.
- Subjects with ongoing alcohol or illegal drug use disorder
- Subjects who are pregnant, lactating or attempting to conceive
- Participants able to become pregnant (have not completed menopause, had a hysterectomy and/or both tubes and/or both ovaries removed) must use effective birth control methods to try and not become pregnant while participant in this study. Methods include (a) partner vasectomy, (b) bilateral tubal ligation, (c) intrauterine devices (IUDs), (d) hormonal implants (such as Implanon), or (e) other hormonal methods (birth control pills, injections, patches, vaginal rings).
- Male participants able to father children with a partner able to become pregnant must agree to use effective birth control (listed above) to participate in this study.
- Known allergy to hymecromone or any component thereof
- Chronic therapy with medications that are known potent human UDP-glucuronosyltransferase inhibitors: canagliflozin, temazepam, tacrolimus.
- Physician concern that participant may not adhere to the study protocol
- Current participation in another clinical treatment trial for ILD. May participate after 12 weeks from conclusion of another treatment trial.
- Changing dose of other ILD medications over the 3 months prior to baseline
- Any condition(s) or diagnosis, both physical or psychological, or physical exam finding that place the participant at increased risk for adverse effects, as determined by the study physician.
Where
- Research Triangle Park, North Carolina
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 1, 2026 · Source of record for eligibility and locations