Omadacycline vs. Moxifloxacin for the Treatment of Community-Acquired Bacterial Pneumonia

Overview

The purpose of this study is to evaluate the safety and efficacy of omadacycline as compared to moxifloxacin in the treatment of adults with community-acquired bacterial pneumonia.

Full Title of Study: “A Phase 3b Randomized, Double-Blind, Multi-Center Study to Compare the Safety and Efficacy of Omadacycline IV/PO to Moxifloxacin IV/PO for Treating Adult Subjects With Community-Acquired Bacterial Pneumonia (CABP)”

Study Type

  • Study Type: Interventional
  • Study Design
    • Allocation: Randomized
    • Intervention Model: Parallel Assignment
    • Primary Purpose: Treatment
    • Masking: Triple (Participant, Investigator, Outcomes Assessor)
  • Study Primary Completion Date: April 2024

Interventions

  • Drug: Omadacycline
    • IV for injection, oral tablets
  • Drug: Moxifloxacin
    • IV solution, oral tablets

Arms, Groups and Cohorts

  • Experimental: Omadacycline
    • Omadacycline 100 mg IV; Omadacycline 300 mg PO (2 x 150 mg tablets); QD Dosing; 7-10 day duration.
  • Active Comparator: Moxifloxacin
    • Moxifloxacin 400 mg IV; Moxifloxacin 400 mg tablets; QD Dosing; 7-10 day duration

Clinical Trial Outcome Measures

Primary Measures

  • Number of participants with early clinical response in the Intent-to-Treat (ITT) Population at the Early Clinical Response (ECR) visit
    • Time Frame: 72 to 120 hours after the first dose of test article
    • Early clinical response is defined as clinical success, categorized by survival with improvement of at least 1 level compared to Baseline in at least 2 CABP symptoms (cough, sputum production, pleuritic chest pain, and dyspnea) with no worsening in the other CABP symptoms. Response is determined programmatically using the investigator’s assessment of the CABP symptoms. The severity of the participant’s CABP symptoms was evaluated on a 4-point scale (absent, mild, moderate, or severe) based upon the CABP Subject Symptom Severity Guidance Framework for Investigator Assessment. An indeterminate response is defined as one that could not be adequately inferred because the participant was not assessed because they withdrew consent, were lost to follow-up, or other specified reason. Clinical failure is defined as no improvement by at least 1 level in CABP symptoms, worsening of any CABP symptom, alternative antibacterial treatment for CABP, discontinuation due to adverse event, or death.

Secondary Measures

  • Number of participants with the indicated investigator assessment of clinical response in the Intent-to-Treat (ITT) Population at the Post Therapy Evaluation (PTE) Visit
    • Time Frame: 5 to 10 days after the last dose of test article
    • At the PTE Visit, the investigator indicates one of the following outcomes relating to the primary infection under study: Clinical Success: survival after completion of a test article regimen without receiving any systemic antibacterial therapy other than test article, resolution of signs/symptoms of the infection present at Screening with no new symptoms/complications attributable to CABP and no need for further antibacterial therapy. Clinical Failure: alternative antibacterial treatment for CABP was required prior to the PTE Visit related to either (a) progression/development of new CABP symptoms or (b) development of infectious complications of CABP. Other reasons for clinical failure: participant received antibiotics that may have been effective for the infection under study for a different infection from the one under study; death prior to the PTE Visit. Indeterminate: the clinical response to test article could not be adequately inferred.
  • Number of participants with the indicated investigator assessment of clinical response in the Clinically Evaluable-Post Therapy Evaluation (CE-PTE) Population at the Post-Therapy Evaluation (PTE) Visit
    • Time Frame: 5 to 10 days after the last dose of test article
    • At the PTE Visit, the investigator indicates one of the following outcomes relating to the primary infection under study: Clinical Success: survival after completion of a test article regimen without receiving any systemic antibacterial therapy other than test article, resolution of signs/symptoms of the infection present at Screening with no new symptoms/complications attributable to CABP and no need for further antibacterial therapy. Clinical Failure: alternative antibacterial treatment for CABP was required prior to the PTE Visit related to either (a) progression/development of new CABP symptoms or (b) development of infectious complications of CABP. Other reasons for clinical failure: participant received antibiotics that may have been effective for the infection under study for a different infection from the one under study; death prior to the PTE Visit. Indeterminate: the clinical response to test article could not be adequately inferred.

Participating in This Clinical Trial

Inclusion Criteria

  • Male or female subjects, age 18 or older who have signed the informed consent form – Must have a qualifying community-acquired bacterial pneumonia – Subjects must not be pregnant or nursing at the time of enrollment – Must agree to a reliable method of birth control during the study and for 30 days following the last dose of study drug Exclusion Criteria:

  • Known or suspected hospital-acquired pneumonia – Confirmed or suspected SARS-CoV-2 infection – Evidence of significant immunological disease – Has a life expectancy of less than or equal to 3 months or any concomitant condition that is likely to interfere with evaluation of the response of the infection under study, determination of AEs, or completion of the expected course of treatment – Has a history of contraindications, hypersensitivity, or allergic reaction to any tetracycline or fluoroquinolone antibiotic – Has received an investigational drug within the past 30 days

Gender Eligibility: All

Minimum Age: 18 Years

Maximum Age: N/A

Are Healthy Volunteers Accepted: No

Investigator Details

  • Lead Sponsor
    • Paratek Pharmaceuticals Inc
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Official(s)
    • Amy Manley, Study Director, Paratek Pharmaceuticals Inc

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