Shortened Antibiotic Treatment of 5 Days in Community-Acquired Pneumonia (CAP5)

April 2, 2025 updated by: Thomas Benfield

Shortened Antibiotic Treatment in Community-Acquired Pneumonia: A Nationwide Danish Randomized Controlled Trial

CAP5 is an investigator-initiated multicentre non-inferiority randomized controlled trial which aims to assess the efficacy and safety of shortened antibiotic treatment duration of community-acquired pneumonia (CAP) in hospitalized adult patients based on clinical stability criteria.

Three to five days after initiation of antimicrobial therapy for CAP, participants are randomized 1:1 to parallel treatment arms: 5 days (intervention) or minimum 7 days (control) of antibiotic treatment. The intervention group discontinues antibiotics at day 5 if clinically stable and afebrile for at least 48 hours. The control group receives antibiotics for a duration of 7 days or longer at the discretion of the treating physician.

The primary outcome is 90-day survival which will be tested with a non-inferiority margin of 6%.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
395

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • Denmark
      • Aalborg, Denmark, 9000
        • Aalborg University Hospital
      • Copenhagen, Denmark, 2400
        • Bispebjerg Hospital
      • Gentofte, Denmark, 2900
        • Gentofte Hospital
      • Herlev, Denmark, 2730
        • Herlev Hospital
      • Hillerød, Denmark, 3400
        • Nordsjællands Hospital
      • Hvidovre, Denmark, 2650
        • Hvidovre Hospital
      • Odense, Denmark, 5000
        • Odense University Hospital

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Hospitalized with community-acquired pneumonia; defined as new pulmonary infiltrate on chest X-ray and/or CT scan and at least one symptom compatible with pneumonia (cough, fever, dyspnoea and/or chest pain)
  • Initiation of antibiotics within 12 hours of the time of the chest X-ray with an infiltrate
  • Age ≥ 18 years
  • Afebrile (temperature ≤ 37.8 °C) for 48 hours at randomization
  • Clinically stable at randomization (systolic blood pressure ≥ 90 mm Hg, heart rate ≤ 100/min., respiratory rate ≤ 24/min., peripheral oxygen saturation ≥ 90%)

Exclusion Criteria:

  • Immunosuppression (HIV-positive, neutropenia, corticosteroid treatment (≥10 mg/day of prednisone or the equivalent for >30 days), chemotherapy, immunosuppressive agents, immunosuppressed after solid organ transplantation, asplenia)
  • Hospitalization during the previous 14 days
  • Antibiotic treatment (>2 days) within the past 30 days, directed at lower respiratory tract pathogens
  • Uncommon cause requiring longer duration of antimicrobial therapy (Pseudomonas aeruginosa, Staphylococcus aureus, Mycobacterium spp., fungi)
  • Extrapulmonary infection (e.g. endocarditis, meningitis, or abscess)
  • Pleural empyema or lung abscess
  • Pleural effusion requiring drainage tube
  • Intensive care unit (ICU) admittance
  • Pregnancy and breastfeeding

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Intervention group
Shortened antibiotic treatment of 5 days
Other: Intervention
Shortened antibiotic treatment of 5 days
Active Comparator: Control group
Antibiotic treatment of 7 days or longer at the discretion of the treating physician
Other: Control
Antibiotic treatment of 7 days or longer at the discretion of the treating physician

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
90-day survival
Time Frame: within 90 days
within 90 days

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Duration of antibiotic treatment
Time Frame: within 90 days
Days that the participant receives antibiotic treatment for pneumonia, adding intravenous and oral therapy
within 90 days
Length of hospital stay
Time Frame: within 90 days
Days from the date of hospital admission for pneumonia to the date of discharge
within 90 days
Antibiotic adverse events
Time Frame: within 90 days
Number of participants with adverse events with possible relation to the antibiotic treatment of pneumonia
within 90 days
Serious adverse events
Time Frame: within 90 days
Number of participants with serious adverse events according to International Council of Harmonisation-Good Clinical Practice (ICH-GCP) guidelines
within 90 days
Major complications
Time Frame: within 90 days
Number of participants with major complications, including pleural effusion, pleural empyema, lung abscess, respiratory failure, severe sepsis, renal failure, use of non-invasive or invasive ventilation, need for vasopressors, and intensive care unit (ICU) admission
within 90 days
Use of antimicrobials after discharge
Time Frame: within 90 days
Days of antibiotic treatment for any reason after hospital discharge
within 90 days
Post-discharge follow-up visits
Time Frame: within 90 days
Number of participants with medical visits after hospital discharge, including visits at the outpatient clinic and at the general practitioner
within 90 days
Readmissions
Time Frame: days 30 and 90
Number of participants with readmissions for reasons related to or unrelated to pneumonia
days 30 and 90
Mortality
Time Frame: in-hospital, days 30 and 90
Number of deaths by any cause
in-hospital, days 30 and 90

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Thomas Benfield

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Simone Bastrup Israelsen, MD, Copenhagen University Hospital - Amager and Hvidovre, Hvidovre, Denmark

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
September 18, 2019

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 22, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 22, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 11, 2019

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 12, 2019

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 13, 2019

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
April 3, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
April 2, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
April 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • H-19014479
  • 2019-000404-15 (EudraCT Number)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Trial data will be made available in anonymous form at public clinical trial databases when the trial has ended. Anonymized patient-level data and other detailed information will be provided by reasonable request to the principal investigator.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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