Comparing two antibiotics for treating blood infections in cancer patients

Ceftolozane/Tazobactam vs. Piperacillin/Tazobactam for the Treatment of Bacteremia Due to Enterobacteriaceae and Pseudomonas Aeruginosa in Hemato-oncological Patients With Severe Neutropenia and Fever: Non-inferiority Study

Not applicable Interventional Instituto Nacional de Cancerologia de Mexico · NCT06422533

This study tests whether a new antibiotic called ceftolozane/tazobactam works just as well as the standard antibiotic piperacillin/tazobactam for treating blood infections in cancer patients with low white blood cell counts.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment226 (estimated)
Ages18 Years and up
SexAll
SponsorInstituto Nacional de Cancerologia de Mexico Academic / other
Drugs / interventionschemotherapy
Locations1 site (Mexico City, Tlalpan)
Trial IDNCT06422533 on ClinicalTrials.gov

What this trial studies

This study evaluates the effectiveness of ceftolozane/tazobactam compared to piperacillin/tazobactam in treating bacteremia in patients with hematological malignancies who are experiencing severe neutropenia. The research aims to demonstrate that ceftolozane/tazobactam is non-inferior to piperacillin/tazobactam, particularly in cases involving multidrug-resistant Gram-negative bacteria. Patients will be monitored for clinical outcomes, and the study will focus on those with fever and bacteremia due to resistant strains. The goal is to provide a safer alternative to traditional antibiotics that may contribute to resistance issues.

Who should consider this trial

Good fit: Ideal candidates are adults over 18 with hematological malignancies, severe neutropenia, and fever.

Not a fit: Patients with known hypersensitivity to cephalosporins or those with severe hemodynamic instability may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a more effective treatment option for patients with severe infections caused by resistant bacteria.

How similar studies have performed: Other studies have shown promising results using ceftolozane/tazobactam in similar patient populations, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* All patients \>18 years old
* Diagnosis of any hematological malignancy
* Severe neutropenia (polymorphonuclear \<500 cells/mm3)
* Fever (≥38.3 degrees Celsius in one measure, or ≥38 degrees Celsius in at least two measures)
* Median arterial pressure ≥65 mmHg on admission
* A life expectancy ≥ 5 days
* Agree to participate in the study

Exclusion Criteria:

* Known hypersensitivity to cephalosporins or anaphylaxis with beta-lactams
* Clinical signs related to hemodynamic instability
* Concomitant use of another antibiotic with activity against Gram-negatives (except Trimethoprim/Sulfamethoxazole (TMP/SMX) as prophylaxis for P. jirovecii
* Patients with end-stage chronic renal failure (\<10 ml/min by creatinine clearance-ACCr) or on renal replacement therapy.
* Patients with grade IV mucositis

Where this trial is running

Mexico City, Tlalpan

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Hematologic NeoplasmsNeutropeniaceftolozane/tazobactampiperacillin/tazobactamneutropeniahematologic neoplasms
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.