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TerminatedNCT05258851AVI-ICUUpdated Jun 14, 2024

Ceftazidime-Avibactam Use in Critically Ill Patients With Carbapenem-Resistant Enterobacteriaceae Infections

A Phase 3 interventional study of Ceftazidime-avibactam and Colistin in Carbapenem-Resistant Enterobacteriaceae Infection, sponsored by King Faisal Specialist Hospital & Research Center. Terminated at 1 site in Saudi Arabia. Open to participants aged 18 Years to 85 Years. Per ClinicalTrials.gov, last updated 2024-06-14.

Sponsored by King Faisal Specialist Hospital & Research Center · Phase 3, Interventional, and Treatment

Why this study was terminated
Difficulties encountered in the recruitment process and slow enrollment. The study was not terminated due to any safety issues or concerns.
Phase
Phase 3
Study type
Interventional
Enrollment
29
Allocation
Randomized
Ages
18 Years to 85 Years
Sex
All
01

Study summary

Carbapenem-Resistant Enterobacteriaceae (CRE) infections are a growing national and international challenge in healthcare settings. This is not only due to the rapid spread of resistance and paucity of options of targeted-antimicrobial agents, but also owing to the high mortality of patients infected with CRE reaching up to 50% as per the Centers of Disease Control and Prevention.

Colistin-based combination regimens have been the mainstay for treating CRE-related infections. Ceftazidime-avibactam is a beta-lactamase inhibitor combination, a novel antibiotic, which recently showed a better clinical and microbiological cure against CRE along with the potential to reduce mortality and nephrotoxicity in comparison to colistin-based regimens in observational studies. However, randomized clinical trials are lacking.

This non-inferiority randomized controlled study aims to assess the efficacy and safety of ceftazidime-avibactam-based regimens in critically ill patients with CRE infections in comparison to colistin-based regimens.

02

Conditions studied

  • Carbapenem-Resistant Enterobacteriaceae Infection

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Keywords

  • Carbapenem-Resistant Enterobacteriaceae
  • Critically ill
  • Ceftazidime-avibactam
  • Colistin
03

In context

Critical Illness

1,924 studies on the registry are indexed under Critical Illness; 465 are open to participants now.

This study's enrollment of 29 is below the median of 90 across 1,003 interventional studies indexed under Critical Illness.

Browse Critical Illness studies →

Lead sponsor

King Faisal Specialist Hospital & Research Center is the lead sponsor of 99 studies on the registry; 18 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 85 Years
Sexes eligible
All
Accepts healthy volunteers
No

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.

Inclusion criteria

  1. Patients aged ≥ 18 years.
  2. Admitted to an intensive care unit (ICU).
  3. Patients with hospital-acquired pneumonia (HAP) or ventilator-associated pneumonia (VAP), complicated urinary tract infection (cUTI), bacteremia, complicated intraabdominal infection (cIAI), and complicated skin and soft tissue infection (cSSTI).
  4. Confirmed infection with CRE, based on a culture and sensitivity obtained within the past 72 hours of study enrollment.
  5. Suspected CRE infection according to one of the following: (1) positive Xpert Carba-R test screening for blaKPC or blaOXA-48 or blaNDM or blaVIM or blaIMI assessed on the admission to the ICU, (2) positive culture for CRE obtained within 3 months from time of enrollment.

Exclusion criteria

Exclusion Criteria:

  1. Acute Physiology and Chronic Health Evaluation II (APACHE II) score more than 30
  2. known significant hypersensitivity reaction to beta-lactam antibiotics or colistin
  3. Positive culture for Stenotrophomonas maltophilia or Acinetobacter baumannii within the current hospitalization.
  4. Patients received the study intervention or control for more than 24 hours before the intended randomization.
  5. Patient/substitute decision-maker or caring physician's refusal to enroll in the study.
  6. Patient with concomitant suspected or confirmed meningitis.
  7. Pregnancy.
  8. Cystic fibrosis.
  9. Patients with Do Not Attempt to Resuscitate (DNAR) code status.
  10. Prior knowledge that the index CRE pathogen was resistant to colistin (MIC >2 μg/ml) or ceftazidime-avibactam (MIC > 8 μg/ml) before randomization.
  11. Objective clinical evidence for any of the following infections that necessitate study therapy for >14 days: endovascular infection, including endocarditis, osteomyelitis, prosthetic joint infection, meningitis, and/or other central nervous system infections
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
29 participants (actual)

Study arms

  • Experimental
    Ceftazidime-avibactam

    Ceftazidime-avibactam 2.5 grams intravenous (IV) every 8 hours infused over two hours for a duration of 7-14 days, with dose adjustment for renal impairment according to the FDA prescribing information. Patients who have a positive Xpert Carb-R screening test or culture for CRE with metallo-beta-lactamases will receive aztreonam added to ceftazidime-avibactam.

    Drug: Ceftazidime-avibactam

  • Active comparator
    Colistin

    Colistin (9-million-unit loading dose IV followed with 9 million units IV daily divided into 3 doses), for 7 to 14 days. Patients with renal impairment will receive antibiotics with adjusted doses based on their glomerular filtration rate or the use and type of renal replacement therapy according to the 2019 International Consensus Guidelines for the Optimal Use of the Polymyxins.

    Drug: Colistin

Interventions

  • DrugCeftazidime-avibactam

    Experimental

  • Control

06

What researchers measure

Primary outcomes

  1. 28-day mortality

    Death

    Time frame: 28 days from randomization

Secondary outcomes

  1. 14-day mortality

    Death

    Time frame: 14 days from randomization

  2. Number of patients with clinical success at end of therapy (EOT) at day 7-14 from randomization and test of cure (TOC) 7 days after completion of treatment

    Defined as: 1- Alive, fever or hypothermia resolution, WBC counts normalization, hemodynamic stability with MAP ≥65 mmHg without vasopressors support. 1. For HAP or VAP: 1+ improving respiratory status including improving PaO2/FiO2 ratio from baseline, decreasing FiO2 and PEEP or extubation or source control for empyema. 2. For bloodstream infection: 1+ documented two negative blood cultures with source removal if applicable. 3. For complicated intra-abdominal infection: 1+ resolution or decreasing size of intra-abdominal collections with source control if applicable. 4. For complicated skin and soft tissue infection: 1+ resolution of signs and symptoms plus surgical drainage or debridement if applicable. 5. For complicated urinary tract infection: 1+ resolution of signs and symptoms and source removal if applicable.

    Time frame: EOT at 7-14 days from randomization and TOC 7 days after completion of treatment

  3. Number of patients with microbiological response at the EOT at days 7-14 from randomization and TOC 7 days after completion of treatment

    Defined as: 1. Eradication (successful microbiological response): Baseline pathogen no longer present in the culture(s) that indicated the use of study drugs. 2. Presumed eradication (successful microbiological response): Patient deemed a clinical cure as assessed by the adjudication committee at EOT and TOC, and repeat culture that indicated enrollment in the study is not available. 3. Persistence (failure of microbiological response): Presence of baseline pathogen in the culture that indicated the use of study drugs. 4. Presumed persistence (failure of microbiological response): Patients deemed a clinical failure as assessed by the adjudication committee at EOT and TOC, and specimen is not available. 5. Indeterminate: Any culture that cannot be classified into one of the above categories, or the patient was an indeterminate clinical response and no cultures were taken.

    Time frame: EOT at 7-14 days from randomization and TOC 7 days after completion of treatment

  4. Time to weaning from mechanical ventilation at day 28

    Number of days not receiving mechanical ventilation

    Time frame: 28 days from randomization

  5. Requirement for renal replacement therapy at day 28

    New start of renal replacement therapy

    Time frame: 28 days from randomization

  6. Intensive care unit (ICU) length of stay, censored at 28 days

    Duration of stay inside the ICU

    Time frame: 28 days from randomization

  7. Days alive and out of the ICU, censored at 28 days

    Number of days alive and outside the ICU

    Time frame: 28 days from randomization

  8. Drug-related adverse events

    Acute kidney injury, seizures, leukopenia, thrombocytopenia, allergic reaction, diarrhea, clostridium difficile infection.

    Time frame: 28 days from randomization

07

Study locations

1 site
  • King Faisal Specialist Hospital & Research Centre
    Riyadh, Saudi Arabia
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from Jun 2022 to primary completion in Apr 2023, 10 months.

How these figures are worked out, and which studies are left out of them.

Registered
Feb 17, 2022
First posted
Feb 28, 2022
StartActual
Jun 1, 2022
Primary completionActual
Apr 12, 2023
CompletionActual
Jan 28, 2024
Last update
Jun 14, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Jun 14, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05258851
Lead sponsor
King Faisal Specialist Hospital & Research Center
Responsible party
Zainab Alduhailib (Critical Care Medicine Consultant, King Faisal Specialist Hospital & Research Center) — Principal investigator
First posted
Feb 28, 2022
Start date
Jun 1, 2022
Primary completion
Apr 12, 2023
Completion
Jan 28, 2024
Last update
Jun 14, 2024

Study contacts

Zainab Al Duhailib
principal investigator · King Faisal Specialist Hospital & Research Center
Hakeam Hakeam
principal investigator · King Faisal Specialist Hospital & Research Center

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is terminated, as verified in Jun 2024. You cannot join it, but the record below documents what was studied.

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