Skip to content

Azithromycin Versus Doxycycline in Hospitalized Adult Patients With Community Acquired Pneumonia Treated With Beta-lactams

Azithromycin Versus Doxycycline in Hospitalized Adult Patients With Community Acquired Pneumonia Treated With Beta-lactams

Status
Recruiting
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07164131
Acronym
AD-CAP
Enrollment
1120
Registered
2025-09-09
Start date
2025-09-15
Completion date
2031-09-01
Last updated
2026-07-02

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Community-acquired Pneumonia

Keywords

Azithromycin, Doxycycline, hospitalized

Brief summary

The purpose of this study is to compare effectiveness and safety of Azithromycin versus Doxycycline in adult patients hospitalized with community acquired pneumonia (CAP) treated with Beta-lactams.

Interventions

DRUGDoxycycline

Subjects will receive Doxycycline (orally or intravenously) in combination with beta-lactam therapy within 12 hours of hospital admission. Treatment duration will be 5-7 days.

DRUGAzithromycin

Subjects will receive Azithromycin (orally or intravenously) in combination with beta-lactam therapy within 12 hours of hospital admission. Treatment duration will be 5-7 days.

Sponsors

Mayo Clinic
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

• All adult patients (\>18 years old) admitted with CAP and receiving a beta-lactam antibiotic plus a form of atypical coverage (azithromycin or doxycycline) in the ED within 12 hours of admission.

Exclusion criteria

* High clinical suspicion for Legionella pneumonia * Allergy or contraindication to the use of either azithromycin or doxycycline (usual clinical practice) * Antibiotics not for CAP * Pregnant women (based on clinical assessment as part of standard of care) * Severe CAP as defined by the ATS/IDSA criteria * Corrected QT prolongation (\> 440 ms in men and \> 460 ms in women) * Receiving a different antibiotic (e.g quinolones) * Admission \> 24 hours * Known to be a prisoner

Design outcomes

Primary

MeasureTime frameDescription
Hospital-free days28 daysNumber of days subject remained out of hospital

Secondary

MeasureTime frameDescription
Oxygen-free days28 daysNumber of days subject does not require new supplemental oxygen use. Oxygen-free days will be set as 0 for patients who died during the stay or had a length of stay of ≥28 days
180-day mortality180 daysDefined as mortality at 180 days after discharge
Need for advanced respiratory support or in-hospital mortalityUp to 28 daysDefined as a composite of need for advanced respiratory support or mortality during hospitalization. Need for advanced respiratory support would include need for high flow nasal cannula, non-invasive positive pressure ventilation, and invasive ventilation in patients not requiring this at baseline.

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORYewande Odeyemi

Mayo Clinic

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 3, 2026