A Phase 2/3 interventional study of Inhaled levofloxacin and Standard-of-care / Usual care in Community-acquired Pneumonia, CAP and Community Acquired Pneumonia, sponsored by Copenhagen Respiratory Research. Active, not recruiting at 1 site in Denmark. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-11-05.
Sponsored by Copenhagen Respiratory Research · Phase 2/3, Interventional, and Treatment
This trial aims to determine whether treatment with inhaled levofloxacin (an antibiotic) is equal to systemic antibiotic treatment (usual care) for patients admitted to a hospital with community-acquired pneumonia in regards to treatment-effect and safety parameters.
Additionally, this study will assess if treatment with inhaled antibiotics leads to fewer antibiotic side-effects and a more preserved gastro-intestinal microbial environment.
The main question this study aims to answer is:
Does inhaled levofloxacin 240mg twice daily result in comparable days alive and out of hospital at 14 days compared to standard-of-care (usual care) antibiotic treatment for community-acquired pneumonia in admitted patients?
Secondary questions this study aims to answer are:
The above list is not the complete list of questions this study aims to answer, but serves as highlights.
Community-acquired pneumonia is common and potentially fatal. Standard-of-care treatment mainly consists of systemic antibiotics and treatment supporting recovery (e.g. oxygen-therapy, fluid rescucitation, respiratory physiotherapy, sufficient dietary intake etc.). As with all medicinal treatments, antibiotic treatment is hard on the body and can lead to side-effects as well as organ-failure in extreme cases.
Antibiotic treatment naturally promotes antimicrobial resistance (AMR), which result in less effective antibiotic treatment, and ultimately it could potentially lead to antibiotics being rendered useless in treating infections such as pneumonia.
A strategy to reduce the promotion of antimicrobial restistance (AMR) is better targeting of the disease-inducing microbes and several other strategies exists. Physicians and researchers usually categorize the targeting of disease-promoting microbes as either "local"/"topical" or "systemic". No "local" treatment of community-acquired pneumonia has been demonstrated to this day, but "local" treatment is theoretically possible with inhaled antibiotics. This treatment strategy has been hypothesized in the last decade, but no studies have been conducted regarding community-acquired pneumonia.
This study will include 460 patients and be conducted in two stages: Stage A and Stage B, each stage including 230 patients.
Patients are included voluntarilty and with prior written informed consent.
Patients included in stage A will be treated with systemic antibiotics for 24 hours and will then be randomized to further treatment with either inhaled levofloxacin 240mg twice daily or continue the "usual care"-treatment that they were receiving. The duration of intervention is up to 5 days.
At 230 included patients a planned interrim analysis will be conducted by an appointed data safety monitoring board of certified healthcare professionals to assess the further continuation of the trial. If favorable assessment, the trial will commence to Stage B.
Patients included in Stage B will be randomized at admission to either usual standard-of-care treatment for 5 days OR inhaled levofloxacin 240mg twice daily for 5 days.
The trial is open-label, which means that both patients and healthcare professionals will know which treatment arm the patient is receiving.
324 studies on the registry are indexed under Community-Acquired Pneumonia; 77 are open to participants now.
This study's planned enrollment of 460 is above the median of 250 across 195 interventional studies indexed under Community-Acquired Pneumonia.
Browse Community-Acquired Pneumonia studies →Copenhagen Respiratory Research is the lead sponsor of 5 studies on the registry; 2 are open to participants now.
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.
Clinical suspicion of community-acquired pneumonia necessitating antibiotic treatment.
Defined as one or more of the following:
Exclusion Criteria:
for fluoroquinolone treatment, including but not limited to:
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.
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.
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
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.
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
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.
Contraindication
A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
GFR and eGFR (kidney filtering)
GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².
Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.
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.
QT and QTc
On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.
The study may name a correction formula and a limit in milliseconds, often around 450–480.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Systemic antibiotic treatment
Drug: Standard-of-care / Usual care
Drug: Inhaled levofloxacin
Inhaled levofloxacin 240mg twice daily
Standard-of-care / Usual care deemed of antibiotic treatment for community-acquired pneumonia assessed by the treating physician
DAOH14
Days alive and out of hospital day 14
Time frame: From inclusion to 14 days after
Plan to share: Yes — All reasonable requests will be considered for pseudo-anonymized datasharing in accordance with applicable law of datasharing in the state of Denmark.
Supporting information: Study protocol, Statistical analysis plan, Analytic code
Time frame: At earliest 1 year after Last patients last visit.
Access criteria: To be determined
No publications or documents are linked to this record.
Started Oct 2026 (actual). Primary completion is estimated for Sep 2028, 22 months after the start.
Start moved once since we started tracking on Sep 25, 2026: Sep 2026 → Oct 2026, on Nov 5, 2026.
Earlier changes are on the record history on ClinicalTrials.gov ↗
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 active, not recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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Studies of the drug tested here: Levofloxacin
Community-Acquired Pneumonia →
Copenhagen Respiratory Research