Plain English Summary
Background and study aims
Pulmonary fibrosis is a rare and poorly understood health condition that is caused by scarring of the lungs. It causes a person to become short of breath when physically active and develop a dry, persistent, cough. It gets worse over time and is often fatal. There is no cure for the condition and treatments given are generally palliative. These include giving patients oxygen though a mask, drug treatments (such as pirfenidone) and, in some cases, a lung transplant may be an option. A previous study has showed that people with pulmonary fibrosis who regularly took an antibiotic (called co-trimoxazole) were 5 times more likely to be alive after one year than those that didn’t. However, treatments for pulmonary fibrosis have now changed so researchers now want to see if co-trimoxazole is still as effective. They want to know whether co-trimoxazole, when given alongside current treatments, improves life expectancy and/or reduces the chances of being admitted to hospital for people with pulmonary fibrosis and, by measuring biomarkers (see below), how it may be working.
Who can participate?
Pulmonary fibrosis patients from different regions throughout the UK. All patients must have some degree of breathlessness and reduced breathing tests and not have major health problems, problems with their liver or kidneys.
What does the study involve?
After completing initial assessments and safety blood tests, participants are randomly allocated into one of two groups. Those in group 1 are given co-trimoxazole 960mg twice a day for between 1 year and 3.5 years depending on when they start the study. Those in group 2 are given a placebo tablet for a similar time period. The time until either a participant is admitted to hospital, has a lung transplant or dies is recorded. Questionnaires, breathing tests and blood for biomarkers (chemicals that allow researchers to understand about pulmonary fibrosis) are completed or taken after 3 months, 6 months then every 6 months until the study ends. Patients are also invited to provide a blood sample for genetic testing. Fifty patients are invited to have a bronchoscopy (lung camera test) to find out if co-trimoxazole has an effect on the numbers or amount of inflammatory cells, biomarkers and bacteria (using traditional and new techniques). It is hoped that this study will confirm whether co-trimoxazole has a benefit for patients and, if so, how it may be working.
What are the possible benefits and risks of participating?
Patients may not receive active trial treatment, and may receive the dummy treatment (placebo) but patients will be able to receive any other approved treatment for pulmonary fibrosis from their doctor. Patients may be required to attend the hospital on visits in addition to routine clinic visits for the trial however travel expenses for these will be reimbursed.
Blood tests may cause discomfort and bruising. The questionnaires will take time to complete. The breathing tests may cause slight breathlessness, difficulty breathing or chest discomfort for a few minutes at the most. Patients may experience side-effects listed in the protocol. In addition, its not guaranteed that the study will help patients but the information collected from this study will improve health care professionals ability to treat patients with pulmonary fibrosis in the future.
Where is the study run from?
28 UK NHS hospitals (lead site - Norfolk and Norwich University Hospitals NHS Foundation Trust)
When is the study starting and how long is it expected to run for?
December 2014 to December 2018
Who is funding the study?
National Institute for Health Research (UK)
Who is the main contact?
Mr Matt Hammond
The Efficacy and Mechanism Evaluation of Treating Idiopathic Pulmonary fibrosis with the Addition of Co-trimoxazole (EME-TIPAC)
Pulmonary fibrosis is a condition with limited treatment options. In a previous study we showed that people with pulmonary fibrosis who regularly took an antibiotic (called co-trimoxazole) were 5 times more likely to be alive after one year than those that didn’t. However, treatments for pulmonary fibrosis have now changed and we are trying to find out if co-trimoxazole is still as effective. We want to know whether co-trimoxazole, when given alongside current treatments, improves life expectancy and/or reduces the chances of being admitted to hospital for people with pulmonary fibrosis.
NRES Committee London - Surrey Borders, 24/11/2014, ref: 14/LO/1800
Randomised; Interventional; Design type: Not specified, Treatment
Primary study design
Secondary study design
Randomised controlled trial
Patient information sheet
Not available in web format, please use the contact details to request a patient information sheet
Topic: Respiratory disorders; Subtopic: Respiratory (all Subtopics); Disease: Respiratory
Patients will be randomised on a 1:1 basis to receive Oral co-trimoxazole (960mg as 2 tablets of 480mg twice a day) or matched placebo.
Primary outcome measures
The primary outcome will be the time to death (all causes), lung transplant or the first non-elective hospital admission.
Secondary outcome measures
1. Clinical questionnaires
2. Oxygen saturation
3. Lung function
5. Routine microbiology
6. Adverse events
7. FBC, U&E, LFT
Overall trial start date
Overall trial end date
Participant inclusion criteria
1. Male or female, aged greater than or equal to 40 years. IPF rarely occurs in individuals less than 40 years. Individuals younger than this more frequently have connective tissue related lung disease which is similar to but different from IPF.
2. A diagnosis of idiopathic pulmonary fibrosis (IPF) based on multi-disciplinary consensus according to the latest international guidelines within 2 years of enrollment into the study. Patients with a diagnosis of more than 2 years duration can be enrolled if they have evidence of progressive disease defined as =10% decline in forced vital capacity (FVC) or =15% decline in diffusing capacity of carbon monoxide over the preceding 6 or 12 months.
3. Patients may receive oral prednisolone up to a dose of 10 mg per day, anti-oxidant therapy, pirfenidone or other licensed medication for IPF e.g. nintedanib. Patients should be on a stable treatment regimen for at least 6 weeks to ensure baseline values are representative.
4. MRC dyspnoea score of greater than 1.
5. Able to provide informed consent.; Target Gender: Male & Female ; Lower Age Limit 40 years
Target number of participants
Planned Sample Size: 330; UK Sample Size: 330
Participant exclusion criteria
1. FVC > 70% predicted.
2. A recognised significant co-existing respiratory disease, defined as a respiratory condition that exhibits a greater clinical effect on respiratory symptoms and disease progression than IPF as determined by the principal investigator.
3. Patients with airways disease defined as forced expiratory volume in 1 second (FEV1)/FVC<60%
4. A self-reported respiratory tract infection within 4 weeks of screening defined as two or more of cough, sputum or breathlessness and requiring antimicrobial therapy.
5. Significant medical, surgical or psychiatric disease that in the opinion of the patient’s attending physician would affect subject safety or influence the study outcome including liver (Serum transaminase > 3 x upper limit of normal (ULN), Bilirubin > 2 x ULN) and renal failure (creatinine clearance <30ml/min).
6. Patients receiving recognised immunosuppressant medication (except prednisolone above) including azathioprine and mycophenolate mofetil.
7. Female subjects must be of non-childbearing potential, defined as follows: postmenopausal females who have had at least 12 months of spontaneous amenorrhoea or 6 months of spontaneous amenorrhoea with serum FSH>40mIU/ml or females who have had a hysterectomy or bilateral oophorectomy at least 6 weeks prior to enrollment.
8. Allergy or intolerance to trimethoprim or sulphonamides or their combination.
9. Untreated folate or B12 deficiency.
10. Known glucose-6-phosphate dehydrogenase (G6PD) deficiency or G6PD deficiency measured at screening in males of African, Asian or Mediterranean descent.
11. Receipt of an investigational drug or biological agent within the 4 weeks prior to study entry or 5 times the half-life if longer.
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
Norfolk and Norwich University Hospitals NHS Foundation Trust (lead site)
National Institute for Health Research
Funding Body Type
Funding Body Subtype
Results and Publications
Publication and dissemination plan
Not provided at time of registration
Intention to publish date
Participant level data
Not provided at time of registration
Results - basic reporting