Clinical trial Recruiting at 1 site Phase 4 Interventional Ages 40 and up

Optimizing Azithromycin Use to Prevent COPD Exacerbations

Official title: Optimising Azithromycin Prevention Treatment in COPD to Reduce Exacerbations (OPACE): A Double Blind Adaptive Design Pragmatic Phase IV Randomised Controlled Trial

Run by Cambridge University Hospitals NHS Foundation Trust · NCT05772013 · Data updated 2026-11-12

This study is testing whether stopping azithromycin treatment helps people with stable COPD avoid flare-ups while also looking at safety and side effects.

Quick facts

PhasePhase 4
Study typeInterventional
Ages40 Years and up
SexAll
Enrollment1311 (estimated)
SponsorCambridge University Hospitals NHS Foundation Trust
Academic / other
Locations1 site (Cambridge)
StatusRecruiting
StartedMarch 5, 2024
Main results expectedJune 2028
Study endsNovember 2028
Registry record updatedApril 3, 2024
Trial IDNCT05772013 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 40 and older with a clinical diagnosis of COPD who have been on prophylactic azithromycin for at least three months and are clinically stable.

Probably not a fit

Patients who are currently pregnant, breastfeeding, or have a known hypersensitivity to azithromycin will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial evaluates the effectiveness and safety of discontinuing azithromycin treatment in patients with stable chronic obstructive pulmonary disease (COPD) who are at high risk for exacerbations. Participants will be randomly assigned to one of three groups: complete discontinuation, seasonal discontinuation, or continued treatment with azithromycin. The study aims to determine the best approach to managing azithromycin therapy to minimize exacerbations while considering potential side effects and antibiotic resistance. The trial will utilize a double-blinded, adaptive design to ensure robust results.

Why it matters

Potential benefit: If successful, this study could help optimize treatment strategies for COPD patients, potentially reducing the frequency of exacerbations and improving quality of life.

How similar studies have gone: Previous studies have shown varying results regarding the use of azithromycin in COPD management, making this approach both relevant and necessary to explore further.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Be able and willing to provide informed consent.
* Have an established clinical diagnosis of COPD and be receiving prophylactic azithromycin for ≥ (at least) 3 months to reduce COPD exacerbations.
* Have a self-reported smoking history of ≥ (at least) 10 pack years.
* Be aged \>= 40 years.
* Have clinically stable COPD, i.e. no COPD exacerbation for at least 6 weeks.

Exclusion Criteria:

* Known hypersensitivity to any of the trial drugs or excipients.
* Current breast feeding, pregnancy or planned pregnancy during the trial.
* Any medical history or clinically relevant abnormality that makes participant ineligible for inclusion because of a safety concern relating to continuing or discontinuing azithromycin or other considerations.
* Known immunodeficiency requiring immunoglobulin/specific antibody therapy.
* Azithromycin prophylaxis prescribed for non-COPD condition.
* Active participation in COPD Clinical Trial of an Investigational Medicinal Product (CTIMP).

Electrocardiograms (ECGs) will not be a trial assessment nor entry requirement.

Where it's running

  • Cambridge University Hospital NHS Trust, Addenbrookes Hospital
    Cambridge, United Kingdom
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.