A Phase 2 interventional study of Placebo and BI 3810477 in Idiopathic Pulmonary Fibrosis, sponsored by Boehringer Ingelheim. Not yet recruiting at 37 sites in 8 countries. Open to participants aged 40 Years and older. Per ClinicalTrials.gov, last updated 2026-11-09.
Sponsored by Boehringer Ingelheim · Phase 2, Interventional, and Treatment
This study is for adults aged 40 and older who have idiopathic pulmonary fibrosis (IPF). Women can only participate if they cannot get pregnant. The purpose of this study is to find out whether a medicine called BI 3810477 can slow down the worsening of lung function in people with IPF.
Participants are put into 2 groups randomly, which means by chance. One group receives BI 3810477 and the other group receives placebo. Placebo looks like BI 3810477 but does not contain any medicine. Participants receive BI 3810477 or placebo for 12 weeks. Participants may continue their regular treatment for IPF during the study.
Participants are in the study for about 6 to 7 months. During this time, they visit the study site regularly, about 18 times. Some of the visits may be done at the participant's home instead of the study site. Doctors regularly test how well the lungs work by doing lung function tests. They also look at lung scans and measure markers in the blood that are linked to lung health. The results are compared between the 2 groups to see whether BI 3810477 works. The doctors also regularly check participants' health and note any unwanted effects.
576 studies on the registry are indexed under Idiopathic Pulmonary Fibrosis; 123 are open to participants now.
This study's planned enrollment of 70 is above the median of 55 across 389 interventional studies indexed under Idiopathic Pulmonary Fibrosis.
Browse Idiopathic Pulmonary Fibrosis studies →Boehringer Ingelheim is the lead sponsor of 2,304 studies on the registry; 62 are open to participants now.
Of its 167 completed or terminated interventional studies of FDA-regulated products, 123 (74%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Participants may be either:
- On stable monotherapy with nintedanib, pirfenidone, or nerandomilast for at least 12 weeks prior to Visit 1 and are planning to stay on this background treatment through the screening period and during the treatment period.
OR
- Not currently on treatment with nintedanib, pirfenidone, or nerandomilast for at least 12 weeks prior to Visit 1 (i.e. either antifibrotic-treatment naïve or previously discontinued) and do not plan to start or re-start antifibrotic treatment during the screening or the treatment periods.
Males or females of non-
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
From a breathing test (spirometry): how much air you can blow out in the first second. Often given as a percentage of what is expected for your age, height and sex.
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.
Stroke symptoms need emergency care at once, even if they go away.
Hemoglobin (Hb)
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Postmenopausal
Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
FEV1
From a breathing test (spirometry): how much air you can blow out in the first second. Often given as a percentage of what is expected for your age, height and sex.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Clinically significant
Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
TIA (transient ischaemic attack)
A “mini-stroke”: temporary stroke-like symptoms caused by reduced blood flow to part of the brain, spinal cord or eye, without signs of a new stroke on a scan.
Stroke symptoms need emergency care at once, even if they go away.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Other: Placebo
Biological: BI 3810477
Placebo
BI 3810477
Absolute change from baseline in forced vital capacity (FVC) [mL] at Week 12
Time frame: At baseline and at Week 12.
Absolute change from baseline in quantitative lung fibrosis (QLF) Draft[%] on high-resolution computed tomography (HRCT) at Week 12
Time frame: At baseline and at Week 12.
Absolute change from baseline in log10-transformed Surfactant protein-D (SP-D) plasma concentration [ng/mL] at Week 12
Time frame: At baseline and at Week 12.
Absolute change from baseline in FVC % predicted at Week 12
Time frame: At baseline and at Week 12.
Absolute change from baseline in diffusing capacity of the lung for carbon monoxide (DLCO) % predicted at Week 12
Time frame: At baseline and at Week 12.
Plan to share: Yes — Once the criteria in section "Time Frame" are fulfilled, researchers can use the following link https://www.clinicalstudies.boehringer-ingelheim.com/msw/datasharing to request access to the clinical study documents regarding this study, and upon a signed "Document Sharing Agreement". Furthermore, researchers can request access to the clinical study data, for this and other listed studies, after the submission of a research proposal and according to the terms outlined on the website.
Supporting information: Study protocol, Statistical analysis plan, Clinical study report
Time frame: One year after the approval has been granted by major Regulatory Authorities and after the primary manuscript has been accepted for publication, or after termination of the development program.
Access criteria: For study documents - upon signing of a "Document Sharing Agreement". For study data - 1. after the submission and approval of the research proposal (checks will be performed by the sponsor and/or the independent review panel, including checking that the planned analysis does not compete with sponsor's publication plan); 2. and upon signing of a legal agreement.
Data sharing details ↗ · www.clinicalstudies.boehringer-ingelheim.com
Start is estimated for Nov 2026; primary completion for Jan 2028, 14 months later.
Of 63 industry-sponsored phase 2 interventional studies under Idiopathic Pulmonary Fibrosis, half reached primary completion within 26 months of starting (the median), counting those still running; a quarter within 20 and three quarters within 48. This study's planned 14 months is below that.
Counting every sponsor, half of 76 studies reached it within 30 months; a quarter within 21 and three quarters within 50.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is not yet recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: BI 3810477
Idiopathic Pulmonary Fibrosis →