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Updated May 2026 · ClinicalTrials.gov

RECRUITINGPhase 1INTERVENTIONAL

NAL ER IPF Respiratory Function and Safety Study

An Open Label, In-Clinic Study to Assess Respiratory Function and Safety of Escalating Doses of Nalbuphine Extended-Release Tablets (NAL ER) in Subjects With Idiopathic Pulmonary Fibrosis (IPF)

NAL ER IPF Respiratory Function and Safety Study (NCT07036029) is a Phase 1 interventional studying Idiopathic Pulmonary Fibrosis, sponsored by Trevi Therapeutics. RECRUITING as of the most recent ClinicalTrials.gov update. Talk to your doctor before contacting the trial site.

Important: This information is not medical advice. Talk to your doctor about whether a clinical trial is right for you.

About This Trial

The primary purpose of this study is to assess the safety and tolerability of escalating doses of NAL ER and to evaluate its effect on respiratory function in participants with IPF.

What Stage of Research Is This?

Phase 1 trials test a new treatment for the first time in humans, focusing on safety, dosing, and how the body processes the drug. For Idiopathic Pulmonary Fibrosis, a Phase 1 study typically enrolls a small number of participants — often healthy volunteers or patients who have exhausted standard treatment options. Phase 1 results determine whether a treatment moves into larger Phase 2 efficacy studies.

This trial is currently recruiting participants. The sponsor has registered the study with ClinicalTrials.gov as actively enrolling, which means new applicants who meet the eligibility criteria can be considered for screening. Trial status can change between updates — confirm current recruiting status with the study contact before traveling for a screening visit.

With a target enrollment of 10 participants, this is a small study — typical of early-phase research, rare-disease trials, or pilot studies designed to generate preliminary signal before a larger study is launched.

Who May Be Eligible (Plain English)

Who May Qualify: - Diagnosis of IPF as determined by a pulmonologist based on American Thoracic Society (ATS)/ European Respiratory Society (ERS) / Japanese Respiratory Society (JRS) / Asociación Latinoamericana de Tórax (ALAT) guidelines. - SpO2 ≥ 92%, taken after at least 5 minutes in a sitting position, undisturbed and non-stimulated - Saturation of Hemoglobin with Oxygen as measured by pulse oximetry. - FVC ≥ 40% of Global Lung Function Initiative (GLI) 2012 predicted values- Forced Vital Capacity, as determined by spirometry adhering to ATS/ERS guidelines. Who Should NOT Join This Trial: - Exacerbation of IPF in the last 3 months. - Positive results for coronavirus infection (COVID-19) at Day -2, prior to Admission to the clinical research unit (CRU). - Diagnosis of Chronic Obstructive Pulmonary Disease (COPD), or an forced expiratory volume in 1 second (FEV1)/forced vital capacity (FVC) \<0.8. - Currently using any overnight oxygen therapy at any level or delivered by any modality. Intermittent daytime oxygen use of any duration is allowed. - Diagnosis of sleep disordered breathing (e.g., sleep apnea). - Upper or lower respiratory tract infection within the 8 weeks prior to admission to the CRU. - Clinical history of aspiration pneumonitis. Note: Other inclusion/exclusion criteria mentioned in the protocol may apply. Always talk to your doctor about whether this trial is right for you.

These are translations of the protocol\'s inclusion and exclusion criteria, simplified for patients and caregivers. The original clinical text appears below. Eligibility is ultimately confirmed by the trial site\'s screening process — this summary is a starting point for a conversation with your doctor, not a final determination.

Original Eligibility Criteria

View original clinical language
Inclusion criteria: * Diagnosis of IPF as determined by a pulmonologist based on American Thoracic Society (ATS)/ European Respiratory Society (ERS) / Japanese Respiratory Society (JRS) / Asociación Latinoamericana de Tórax (ALAT) guidelines. * SpO2 ≥ 92%, taken after at least 5 minutes in a sitting position, undisturbed and non-stimulated - Saturation of Hemoglobin with Oxygen as measured by pulse oximetry. * FVC ≥ 40% of Global Lung Function Initiative (GLI) 2012 predicted values- Forced Vital Capacity, as determined by spirometry adhering to ATS/ERS guidelines. Exclusion criteria: * Exacerbation of IPF in the last 3 months. * Positive results for coronavirus infection (COVID-19) at Day -2, prior to Admission to the clinical research unit (CRU). * Diagnosis of Chronic Obstructive Pulmonary Disease (COPD), or an forced expiratory volume in 1 second (FEV1)/forced vital capacity (FVC) \<0.8. * Currently using any overnight oxygen therapy at any level or delivered by any modality. Intermittent daytime oxygen use of any duration is allowed. * Diagnosis of sleep disordered breathing (e.g., sleep apnea). * Upper or lower respiratory tract infection within the 8 weeks prior to admission to the CRU. * Clinical history of aspiration pneumonitis. Note: Other inclusion/exclusion criteria mentioned in the protocol may apply.

Treatments Being Tested

DRUG

NAL ER

Oral tablets

DRUG

Placebo

Oral tablets

Locations (2)

Trial sites listed on ClinicalTrials.gov for this study. Site activation status can vary — confirm with the specific site before traveling for a screening visit.

Mayo Clinic
Rochester, Minnesota, United States
Medicines Evaluation Unit Ltd.
Manchester, United Kingdom

How to Talk to Your Doctor About This Trial

Bring the printable summary of this trial — including the NCT ID (NCT07036029), the sponsor (Trevi Therapeutics), and the key eligibility criteria — to your next appointment. Your doctor can review the inclusion and exclusion criteria against your medical history, lab values, and current treatments to assess whether you are likely to qualify. They can also help you weigh whether trial participation makes sense alongside your existing care plan.

Useful questions to walk through together: What does the trial protocol require beyond standard care? How long is the active treatment phase, and how long is follow-up? Are there study visits at sites I can reach? Who pays for the trial-specific procedures, and who pays for standard-of-care portions? See our 25 questions to ask about clinical trials guide for a more complete checklist.

Authoritative Sources

The official record for this trial lives on ClinicalTrials.gov — the federal registry maintained by the National Library of Medicine at NIH. For background on how this trial fits into the FDA approval pathway, see the FDA drug approval process. For oncology-specific guidance for patients considering trials, the National Cancer Institute publishes patient-oriented overviews. International trial registries are aggregated by the WHO ICTRP.

Frequently Asked Questions

What is the NCT07036029 clinical trial studying?

The primary purpose of this study is to assess the safety and tolerability of escalating doses of NAL ER and to evaluate its effect on respiratory function in participants with IPF. The full protocol is registered on ClinicalTrials.gov and includes the primary outcome measures, eligibility criteria, and study endpoints.

Who can participate in NCT07036029?

Eligibility for this trial depends on the specific inclusion and exclusion criteria set by the sponsor. The plain-English summary above translates the most important criteria into accessible language; the official clinical text is preserved in the collapsible section underneath. Whether you fit any specific trial is a medical decision your doctor needs to confirm — bring the trial information to your treating physician for a full review against your medical history.

How do I contact the trial site for NCT07036029?

Contact information registered with ClinicalTrials.gov is shown in the sidebar of this page. Before reaching out, confirm with your treating physician that this trial is appropriate for your situation. The trial site will then walk you through the screening process to determine final eligibility.

Is participating in a clinical trial safe?

Clinical trials in the United States are regulated by the FDA and overseen by Institutional Review Boards (IRBs) that review the protocol for safety. Risk varies by trial — Phase 1 studies test new treatments in humans for the first time, while Phase 3 trials use treatments that have already passed earlier safety screening. The informed consent document for any specific trial details the known risks and what to expect. Discuss those risks with your physician before deciding whether to participate.

Where can I verify the data on this page?

Every detail on this page comes directly from the ClinicalTrials.gov API. Click "View on ClinicalTrials.gov" in the sidebar to see the official, unmodified record. The federal record is always authoritative; this page is a structured presentation with a plain-English eligibility translation. For background on how clinical trials are regulated, see the FDA drug approval process documentation.

How This Page Is Built

Every field on this page is pulled directly from the ClinicalTrials.gov API v2 — no estimates, no proxies. The plain-English eligibility translation is generated from the original protocol text and reviewed for fidelity to the underlying clinical criteria. The original clinical text remains visible in the collapsible section above so users and clinicians can verify the translation. Read the full methodology for the data pipeline and known limitations.

Source: ClinicalTrials.gov API v2 record for NCT07036029. Maintained by the National Library of Medicine at NIH. Public domain. Cite as: "TrialFinderData. NCT07036029. Data: ClinicalTrials.gov."

Medical disclaimer: This page is informational, not medical advice. Talk to your doctor about whether a clinical trial is right for you.

Last updated 2026-05-08 · Data from ClinicalTrials.gov.