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Idiopathic Pulmonary FibrosisPhase 3PAciFy CoughNCT04429516

Morphine Sulfate/Placebo for the Treatment of PulmonAry Fibrosis Cough

A Phase 3 study testing Morphine Sulfate in people with Idiopathic Pulmonary Fibrosis, run by Royal Brompton & Harefield NHS Foundation Trust at 1 site in United Kingdom.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Idiopathic pulmonary fibrosis (IPF) is a disease of unknown cause that results in scarring of the lungs. Cough is reported by 85% of patients with IPF and can be a distressing symptom with significant physical, social and psychological consequences particularly anxiety and depression. Read more about this study

Who is it for?
Ages 40 to 90 years
Conditions the study is for
Idiopathic Pulmonary Fibrosis
What is being tested?
Morphine Sulfate
Type of treatment
Pill or oral medicine
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
44 participants
Where
1 siteUnited Kingdom
Study dates
17 Dec 2020to 21 Mar 2023
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 40 to 90 years
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Self-reported cough (> 8 weeks), with cough VAS ≥ 30/100
  • A diagnosis of IPF within 5 years prior to the screening visit, as per applicable ATS/ERS/JRS/ALAT guidelines, in line with hospital records.
  • Age 3.1. Male and female participants aged ≥ 40 - 90 years at the time of signing informed consent
  • Sex:
  • 4.1 Male participants: A male participant must agree to use contraception as detailed in Appendix 2 of this protocol during the study and for at least 90 days after the follow-up visit, and refrain from donating sperm during this period 4.2 Female participants: A female participant is eligible to participate if she is not pregnant, not breastfeeding, and not a woman of childbearing potential (WOCBP)
  • Meeting all of the following criteria during the screening period: FVC ≥ 45% predicted of normal, Forced expiratory volume in 1 second (FEV1)/FVC ≥0.7, DLCO corrected for Hb ≥30% predicted of normal.
  • The extent of fibrotic changes is greater than the extent of emphysema on the most recent HRCT scan (investigator determined within 24 months of the study screening visit)
  • Written informed consent.

Who cannot join

  • Treatment with immunosuppressive therapy or antibiotics within last 4 weeks. A stable dose of corticosteroids equivalent to prednisolone of 10 mg per day or less, if used for an indication other than pulmonary disease will be permitted
  • Current smoker
  • History of alcohol and drug(s) addiction
  • Regular use of sedative therapies
  • Acute IPF exacerbation within 6 months prior to screening and/or during the screening period.
  • Concurrent use of pirfenidone or Nintedanib, unless receiving a stable dose for at least 8 weeks prior to screening
Show all 16Show fewer
  • Use of ACE inhibitors
  • Patients with co-existent conditions know to be associated with the development of fibrotic lung disease. This includes: connective tissue disease, (plural plaques, mesothelioma), granulomatous disease including sarcoidosis. Patient with auto-immune profile considered diagnostic for a specific connective tissue disease will be excluded, even in the absence of systemic symptoms. Non-specific rises in auto antibodies e.g. rheumatoid factors, anti-nuclear antibody etc. will not be used to exclude individuals from the study.
  • Significant other organ co-morbidity including hepatic or renal impairment and pulmonary hypertension (investigator determined).
  • Significant coronary artery disease (myocardial infarction within 6 months or ongoing unstable angina within 4 weeks of screening visit) or congestive cardiac failure based on clinical examination
  • Patients as significant risk of side effects, intolerance or allergy to morphine
  • Pregnant and breastfeeding patients, or women or child-bearing potential, not using a reliable contraceptive method (see Appendix 2). A urine pregnancy test will be performed in females of child-bearing potential at the initial study visit.
  • Unable to provide informed written consent
  • Predicted life expectancy < 6 months
  • Use of long-term oxygen therapy. Use of ambulatory oxygen will be permitted.
  • Current or use of opiates within 14 days of the screening visit.

Trial locations and contacts

1 site in 1 country.

United Kingdom1 site
  • Royal Brompton Hospital

    London, SW3 6NP

Other trials in United Kingdom

About this study

Official title: PAciFy Cough: A Multicentre, Double Blind, Placebo Controlled, Crossover Trial of Morphine Sulfate for the Treatment of PulmonAry Fibrosis Cough

Idiopathic pulmonary fibrosis (IPF) is a disease of unknown cause that results in scarring of the lungs.

Cough is reported by 85% of patients with IPF and can be a distressing symptom with significant physical, social and psychological consequences particularly anxiety and depression.

Read more

The cause of cough in IPF is poorly understood and there are currently no proven effective therapies. Morphine has long been advocated for the suppression of chronic cough in other conditions. While morphine is frequently used as a palliative agent for breathlessness in IPF, its effects on cough have never been tested. The aim of this study is therefore to explore and compare the effect of low dose morphine, one of the few therapies shown to be effective in some patients with otherwise refractory chronic cough, in patients with IPF, to an inactive substance known as a placebo.

To make a fair comparison, patients will be randomly allocated to receiving either morphine or placebo in a blinded fashion. This means neither the doctor nor the patient will know which drug they are receiving, and the drugs will appear the same. However, the trial is designed so that you will receive both morphine and placebo, but at different times (this is called a cross-over study). More specifically, you will be given either morphine or placebo for 14 days at a time.

In this study, it is hypothesised that compared with placebo, low dose (5mg) controlled release Morphine sulfate (MST) will reduce the number of coughs recorded during a 24hr period in patients with IPF.

Being tested
Morphine Sulfate, Placebo oral tablet
Medical subject headings
Idiopathic Pulmonary Fibrosis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Morphine SulfateDrug

    over-encapsulated Morphine Sulfate prolonged release 5mg tablet, twice daily for 14 days. Patients will then crossover after a 7 day wash out period.

  • Placebo oral tabletDrug

    capsule containing Microcrystalline Cellulose Ph. Eur, 5 mg twice daily

Study groups in NCT04429516
Study groupRoleWhat they receive
Morphine SulfateExperimentalNot described
Receives: Drug: Morphine Sulfate
PlaceboPlacebo comparatorNot described
Receives: Drug: Placebo oral tablet

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. The Percent Change in Daytime Cough Frequency (Coughs Per Hour)

    Measured: from baseline as assessed by objective digital cough monitoring at Day 14 of treatment

Secondary outcomes (8)
  1. Change From Baseline in Health-related Quality of Life Scores (Living With Idiopathic Pulmonary Fibrosis Questionnaire)

    Living with Idiopathic Pulmonary Fibrosis (L-IPF): Developing a Patient-Reported Symptom and Impact Questionnaire to Assess Health-Related Quality of Life in IPF; on a scale between 0 to 4, where 0 is Not at all and 4 is Extremlly. QoL scores were measured at baseline and day 14. A single estimate was reported which is the mean change from baseline

    Measured: At Day 0, Day 14

  2. Change From Baseline in Health-related Quality of Life Scores (HADS- Hospital Anxiety and Depression Scale)

    HADS - Hospital Anxiety and Depression Scale (Scoring 0-7 = Normal 8-10 = Borderline abnormal (borderline case) 11-21 = Abnormal (case). QoL scores were measured at baseline and day 14. A single estimate was reported which is the mean change from baseline

    Measured: At Day 0, Day 14

  3. Change From Baseline in Health-related Quality of Life Scores (K-BILD - King's Brief Interstitial Lung Disease Questionnaire)

    The KBILD is a self-completed health status questionnaire that comprises 15 items and a seven-point Likert response scale. It has three domains: psychological, breathlessness and activities and chest symptoms. The KBILD score ranges are 0-100; 100 represents best health status. QoL scores were measured at baseline and day 14. A single estimate was reported which is the mean change from baseline

    Measured: At Day 0, Day 14

  4. Change From Baseline in Self-reported Cough (Leicester Cough Questionnaire (LCQ)

    The Leicester Cough Questionnaire comprises of 19 questions. Score ranges from 3 to 21 with higher values indicating a better QoL. 8 of the questions assess the physical cough domain, 7 items assess the psychological impact of cough, and 4 questions assess the social impact of cough. QoL scores were measured at baseline and day 14. A single estimate was reported which is the mean change from baseline

    Measured: At Day 0, Day 14

  5. Change From Baseline in Self-reported Cough - Visual Analogue Scale (VAS)

    VAS - The cough visual analogue scale (VAS) represents a simple instrument, using a 100 mm linear scale where patient can indicate the severity of their cough between the two extremes: zero is no cough while 100 mm is the worst cough imaginable. QoL scores were measured at baseline and day 14. A single estimate was reported which is the mean change from baseline

    Measured: At Day 0, Day 14

  6. Change From Baseline in Dyspnoea (Dyspnoea 12)

    D-12 consists of 12 descriptor items on a scale of none (0), mild (1), moderate (2), or severe (3). It provides an overall score for breathlessness severity that incorporates seven physical items and five affective items. The range of scores is between 0 and 36 with higher score representing greater levels of dyspnoea. QoL scores were measured at baseline and day 14. A single estimate was reported which is the mean change from baseline

    Measured: At Day 0, Day 14

  7. Change From Baseline in Global Impression of Change in Quality of Life, Cough and Breathlessness.

    It provides a brief, stand-alone assessment of treatment effect on cough, breathlessness and overall quality of live on a scale of: worse, same and better.

    Measured: At Day 14 and Day 36

  8. Proportion of Responders With a Minimum of 20% Decrease From Baseline at the End of Treatment in 24-hour Average Cough Count.

    Proportion of responders with a minimum of 20% decrease from baseline at the end of treatment in 24-hour average cough count.

    Measured: Comparison made between pre-treatment and at follow up visit in both the first and then the crossover arms of the study: Day 0, Day 14, Day 22 and Day 36

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Jun 2020
  2. Study start17 Dec 2020
  3. Primary completion21 Mar 2023
  4. Study completion21 Mar 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Crossover
Masking
Triple blind
Who is masked
Participant, Care provider, Investigator
Enrolment
44 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04429516
Sponsor's protocol ID
RBH2019/001
Other IDs
2019-003571-19, 2019
Acronym
PAciFy Cough
Status last verified
May 2026
First submitted
12 Mar 2020
Last updated
7 May 2026
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Hope-Gill BD, Hilldrup S, Davies C, Newton RP, Harrison NK. A study of the cough reflex in idiopathic pulmonary fibrosis. Am J Respir Crit Care Med. 2003 Oct 15;168(8):995-1002. doi: 10.1164/rccm.200304-597OC. Epub 2003 Aug 13.

    PubMed 12917229
  • van Manen MJ, Birring SS, Vancheri C, Cottin V, Renzoni EA, Russell AM, Wijsenbeek MS. Cough in idiopathic pulmonary fibrosis. Eur Respir Rev. 2016 Sep;25(141):278-86. doi: 10.1183/16000617.0090-2015.

    PubMed 27581827
  • Morice AH, Menon MS, Mulrennan SA, Everett CF, Wright C, Jackson J, Thompson R. Opiate therapy in chronic cough. Am J Respir Crit Care Med. 2007 Feb 15;175(4):312-5. doi: 10.1164/rccm.200607-892OC. Epub 2006 Nov 22.

    PubMed 17122382
  • Bajwah S, Davies JM, Tanash H, Currow DC, Oluyase AO, Ekstrom M. Safety of benzodiazepines and opioids in interstitial lung disease: a national prospective study. Eur Respir J. 2018 Dec 6;52(6):1801278. doi: 10.1183/13993003.01278-2018. Print 2018 Dec.

    PubMed 30309973
  • Wu Z, Spencer LG, Banya W, Westoby J, Tudor VA, Rivera-Ortega P, Chaudhuri N, Jakupovic I, Patel B, Thillai M, West A, Wijsenbeek M, Maher TM, Smith JA, Molyneaux PL. Morphine for treatment of cough in idiopathic pulmonary fibrosis (PACIFY COUGH): a prospective, multicentre, randomised, double-blind, placebo-controlled, two-way crossover trial. Lancet Respir Med. 2024 Apr;12(4):273-280. doi: 10.1016/S2213-2600(23)00432-0. Epub 2024 Jan 15.

    PubMed 38237620
  • Wu Z, Banya W, Chaudhuri N, Jakupovic I, Maher TM, Patel B, Spencer LG, Thillai M, West A, Westoby J, Wijsenbeek M, Smith J, Molyneaux PL. PAciFy Cough-a multicentre, double-blind, placebo-controlled, crossover trial of morphine sulphate for the treatment of pulmonary Fibrosis Cough. Trials. 2022 Mar 2;23(1):184. doi: 10.1186/s13063-022-06068-4.

    PubMed 35236391

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Morphine Sulfate in people with Idiopathic Pulmonary Fibrosis, run by Royal Brompton & Harefield NHS Foundation Trust at 1 site in United Kingdom.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 7 May 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United Kingdom. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 7 May 2026). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

The Percent Change in Daytime Cough Frequency (Coughs Per Hour) (time frame: from baseline as assessed by objective digital cough monitoring at Day 14 of treatment). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04429516, which also lists 6 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 7 May 2026.

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