A Phase 3 interventional study of Cefepime-Zidebactam and Ceftazidime-avibactam with or without Colistin in Hospital Acquired Bacterial Pneumonia (HABP) and Ventilator Associated Bacterial Pneumonia (VABP), sponsored by Wockhardt. Not yet recruiting at 55 sites in 14 countries. Open to participants aged 18 Years to 90 Years. Per ClinicalTrials.gov, last updated 2026-10-21.
Sponsored by Wockhardt · Phase 3, Interventional, and Treatment
This is a Phase 3, randomized, double-blind, multicenter, comparative study evaluating cefepime-zidebactam (FEP-ZID) versus ceftazidime-avibactam (CAZ-AVI) with or without colistin in the treatment of adults with hospital-acquired bacterial pneumonia (HABP) or ventilator-associated bacterial pneumonia (VABP). Trial participants will be randomized in a 1:1 ratio to receive either FEP-ZID or CAZ-AVI with or without colistin for 7 to 14 days. Colistin will be added to the CAZ-AVI regimen (or matching saline to the FEP-ZID regimen, to maintain blinding) for participants with a baseline pathogen presumed or confirmed to be CAZ-AVI-resistant. All trial participants will also receive linezolid for coverage of methicillin-resistant staphylococci for at least the first 3 days of treatment.
The primary objectives are to assess 14-day all-cause mortality between treatment groups and to assess the safety and tolerability of FEP-ZID relative to CAZ-AVI with or without colistin. Secondary objectives include 28-day all-cause mortality, clinical and microbiological outcomes at End-of-Treatment (EOT) and Test-of-Cure (TOC), sustained clinical cure at Late Follow-up (LFU), superinfection and new infection rates, and pharmacokinetic (PK) characterization of FEP and ZID.
Wockhardt is the lead sponsor of 39 studies on the registry; 3 are open to participants now.
Of its 9 completed or terminated interventional studies of FDA-regulated products, 1 (11%) have results posted.
Counted across the registry records on this site, refreshed daily.
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Have at least one of the following new-onset or worsening signs within 24 hours prior to randomization:
A. VABP:
B. HABP:
5. If a female of childbearing potential, must have a negative urine or serum pregnancy test (β-human chorionic gonadotropin) during their hospitalization and must agree to use one of the following highly effective methods of contraception through TOC:
Note: a female is considered to be of childbearing potential unless post-menopausal for more than 1 year of spontaneous amenorrhea or permanently surgically sterilized (bilateral oophorectomy, salpingectomy, hysterectomy, tubal ligation). A high follicle stimulation hormone level in the post-menopausal range may be used to confirm a post-menopausal state in women not using hormonal contraception or hormonal replacement therapy.
6.If male, trial participant must agree to use an acceptable barrier method of birth control (i.e., condom) with female partner(s) of childbearing potential who are using one of the contraceptive methods described above in Inclusion Criterion 5, and must not donate sperm from Screening through TOC.
Exclusion Criteria:
Any of the following conditions or diagnoses:
Receipt of potentially effective systemic or inhaled antibacterial therapy for more than 48 hours within 72 hours prior to randomization, with the exception of either of the following:
Participants with a CrCl \<15 mL/min will be included with the exception of:
Drug: Cefepime-Zidebactam
Drug: Ceftazidime-avibactam with or without Colistin
3 g (2 g FEP + 1 g ZID) IV every 8 hours (q8h), infused over 60 ± 5 minutes for 7 to 14 days
CAZ-AVI 2.5 g (2 g CAZ + 0.5 g AVI) IV q8h, infused as 2 infusion bags, each bag infused over 60 ± 5 minutes for 7 to 14 days, with or without colistin (loading dose 300 mg IV CBA infused over 60 ± 5 minutes, followed by 180 mg IV CBA q12h) for participants with a CAZ-AVI-resistant baseline pathogen
All-cause mortality at 14 days
All-cause mortality at 14 days defined as death for any reason up to and including Day 14 in the Modified Intent-to-Treat (MITT) analyses set. Each trial participant is expected to complete the study through the LFU visit (the latter to also be performed for participants who prematurely discontinued the study treatment). * Inter-current events (not necessarily mutually exclusive) will be handled as follows: * Participants receiving any alternative non-study systemic antibacterial started post-randomization for the treatment of the HABP/VABP before (and including) Day 14 will be evaluated for mortality as observed on study Day 14 (treatment policy strategy). * Participants with early treatment and/or study discontinuation prior to Day 14 will be followed and evaluated for mortality as observed on Day 14 (treatment policy strategy) * Handling of missing data: * Participants for whom the survival status at Day 14 is unknown for whatever reason will be presumed to be non-survivors.
Time frame: Day 14
All-cause mortality at 28 days
All-cause mortality at 28 days defined as death for any reason up to and including Day 28 in the MITT analyses set. * Inter-current events (not necessarily mutually exclusive) will be handled as follows: * Participants receiving any alternative non-study systemic antibacterial started post-randomization for the treatment of the HABP/VABP before (and including) Day 28 will be evaluated for mortality as observed on study Day 28 (treatment policy strategy). * Participants with early treatment and/or study discontinuation prior to Day 28 will be followed and evaluated for mortality as observed on Day 28 (treatment policy strategy) * Handling of missing data ▪ Participants for whom the survival status at Day 28 is unknown for whatever reason, will be presumed to be non-survivors.
Time frame: Day 28
Clinical Outcome at EOT in the MITT analyses set
Clinical response: improvement in signs and symptoms such that no additional antibacterial therapy is required for the treatment of the pneumonia. Clinical non-response (any of the following): worsening or no improvement of HABP/VABP signs and symptoms requiring additional non-study systemic antibacterial therapy started post-randomization, except antibiotics with sole gram-positive activity; requiring more than 14 days of antibacterial therapy for HABP/VABP; death from any cause by the time of the assessment; discontinuation of study therapy due to a TEAE AND alternative antibacterial therapy is required, except agents with sole gram-positive coverage. Indeterminate: clinical outcome data missing for any reason. Intercurrent events are handled as part of the definition of clinical non-response. Participants with missing data will have an indeterminate outcome.
Time frame: EOT (Days 7 to 14)
Clinical Outcome at TOC in the MITT analyses set
* Clinical cure - continued improvement in signs and symptoms such that no antibacterial therapy is required for the treatment of the pneumonia after EOT. * Clinical failure * Recurrence of any of the pneumonia-associated signs and symptoms that were present before EOT, * Development of new signs and symptoms of HABP/VABP requiring additional and/or alternative non-study systemic antibacterial therapy, * Death from any cause, * Clinical non-response at EOT will be carried forward to the TOC visit as a clinical failure. Indeterminate - study data for the determination of the clinical outcome at TOC are missing for any reason. Intercurrent events (as detailed in Section 15.4.3.2) are handled as part of the definition of clinical non-response (composite variable strategy). Participants with missing data will have an indeterminate outcome.
Time frame: TOC (Day 21± 2 days)
Number of Participants with Sustained clinical cure at LFU in the MITT Population
Sustained clinical cure is a single composite outcome assessed once per participant. A participant is classified as having sustained clinical cure if they had clinical cure at Test-of-Cure (TOC) and, at LFU, had no new signs or symptoms of pneumonia requiring additional antibacterial therapy and had not died from any cause. These criteria define one classification and are not separate outcomes. Participants whose LFU outcome cannot be evaluated because of missing data are classified as indeterminate. The reported value is the number of participants with sustained clinical cure.
Time frame: Day 35 ± 5 days
Number of Participants with Sustained Clinical Cure at LFU in the mMITT Population
Sustained clinical cure is a single composite outcome assessed once per participant. A participant is classified as having sustained clinical cure if they had clinical cure at Test-of-Cure (TOC) and, at LFU, had no new signs or symptoms of pneumonia requiring additional antibacterial therapy and had not died from any cause. These criteria define one classification and are not separate outcomes. Participants whose LFU outcome cannot be evaluated because of missing data are classified as indeterminate. The reported value is the number of participants with sustained clinical cure.
Time frame: Day 35 ± 5 days
Number of Participants with Sustained Clinical Cure at LFU in the CE Population
Sustained clinical cure is a single composite outcome assessed once per participant. A participant is classified as having sustained clinical cure if they had clinical cure at Test-of-Cure (TOC) and, at LFU, had no new signs or symptoms of pneumonia requiring additional antibacterial therapy and had not died from any cause. These criteria define one classification and are not separate outcomes. Participants whose LFU outcome cannot be evaluated because of missing data are classified as indeterminate. The reported value is the number of participants with sustained clinical cure.
Time frame: Day 35 ± 5 days
Microbiological Response in the mMITT analyses set
Overall by-subject response, based on per-pathogen microbiological outcome at EOT and TOC. Eradication - absence of the baseline pathogen from lower respiratory tract culture and blood (if obtained). Presumed eradication - no source to culture and participant assessed as clinical response (EOT) or clinical cure (TOC). Persistence - continued presence of the baseline pathogen in lower respiratory tract or blood culture (if obtained). Presumed persistence - no source to culture in a participant judged clinical non-response (EOT) or failure (TOC). Persistence/presumed persistence at EOT are carried forward to TOC. Indeterminate - data missing for any reason and cannot otherwise be deemed unfavorable. Overall response at TOC: Favorable - eradication or presumed eradication of all baseline pathogens; Unfavorable - persistence or presumed persistence of at least one pathogen (EOT unfavorable responses carried forward); Indeterminate - microbiological response data missing for any reason.
Time frame: EOT (Days 7 to 14) and TOC (Day 21± 2 days)
Exploratory Endpoints:
Health economics: * Total number of days in hospital * Number of days in intensive care unit * Number of days on a ventilator
Time frame: Throughout the study (Day 1 to 35 ± 5 days)
Safety Endpoints (in the Safety Analyses set):
The number and percent of trial participants with TEAEs and the number and percent of trial participants with potentially clinically significant changes in clinical safety laboratories and electrocardiograms (ECGs)
Time frame: Throughout the Study (Day 1 to Day 35 ± 5 days)
Start is estimated for Oct 2026; primary completion for Dec 2027, 14 months later.
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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 ↗
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Studies of the drug tested here: Cefepime-zidebactam