Clinical trial Recruiting at 30 sites Phase 2 Interventional Ages Any age to 39 Weeks

Evaluating Aztreonam-Avibactam for Treating Bacterial Infections in Infants and Newborns

Official title: A PHASE 2A, 2-PART, OPEN-LABEL, NON-RANDOMIZED, MULTICENTER, SINGLE AND MULTIPLE DOSE TRIAL TO EVALUATE PHARMACOKINETICS, SAFETY AND TOLERABILITY OF AZTREONAM AND AVIBACTAM ± METRONIDAZOLE IN NEONATES AND INFANTS FROM BIRTH TO LESS THAN 9 MONTHS OF AGE WITH SUSPECTED OR CONFIRMED INFECTIONS DUE TO GRAM-NEGATIVE PATHOGENS REQUIRING INTRAVENOUS ANTIBIOTIC TREATMENT

Run by Pfizer · NCT06462235 · Data updated 2026-11-12

This study is testing a new antibiotic combination to see if it is safe and effective for treating bacterial infections in hospitalized infants and newborns.

More Gram-negative Bacterial Infection trials

Quick facts

PhasePhase 2
Study typeInterventional
AgesAny age to 39 Weeks
SexAll
Enrollment48 (estimated)
SponsorPfizer
Industry-sponsored
Locations32 sites (Orange, California and 31 other locations)
StatusRecruiting
StartedSeptember 25, 2024
Main results expectedApril 25, 2027
Study endsApril 25, 2027
Registry record updatedOctober 15, 2026
Trial IDNCT06462235 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are hospitalized infants and newborns up to 9 months old who are receiving intravenous antibiotics for suspected or confirmed bacterial infections.

Probably not a fit

Patients with severe renal impairment or those who have received other investigational products recently may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study aims to assess the safety and effects of a combination antibiotic, aztreonam-avibactam (ATM-AVI), in hospitalized infants and newborns with bacterial infections caused by gram-negative bacteria. The study is divided into two parts: Part A involves a single intravenous infusion of ATM-AVI to evaluate safety and pharmacokinetics, while Part B consists of multiple infusions for confirmed infections. Participants will be closely monitored for safety and tolerability during and after the treatment. The study will enroll a total of 48 participants across four age cohorts, ensuring a comprehensive evaluation of the treatment's effects in this vulnerable population.

Why it matters

Potential benefit: If successful, this treatment could provide a new effective option for managing serious bacterial infections in infants and newborns.

How similar studies have gone: While this approach is novel in this specific population, similar studies have shown promise in treating bacterial infections with combination antibiotics.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria

Participants must meet the following key inclusion criteria to be eligible for enrollment into the study:

1. Hospitalized with age from birth \<9 months, including preterm birth
2. Part A: Receiving IV antibiotics for treatment of suspected or confirmed bacterial infection, including but not limited to cIAI, cUTI, HAP/VAP, BSI, or sepsis.
3. Part B: Suspected or confirmed gram-negative bacterial infection requiring IV antibiotics, including but not limited to cIAI, cUTI, HAP/VAP, BSI, or sepsis.

Participants with any of the following characteristics/conditions will be excluded:

1. Received any other investigational medicinal product within the longer of 30 days or 5 half-lives before enrollment.
2. Any medical or laboratory abnormality that may increase the risk of study participation or, in the investigator's judgment, make the participant inappropriate for the study.
3. Severe renal impairment or known significant renal disease, as evidenced by elevated serum creatinine at screening, or urinary output \<0.5 mL/kg/h for 6 consecutive hours or requirement for dialysis.
4. Part B Only: Received \>24 hours of systemic antibiotic treatment for gram-negative organisms at time of enrollment, unless documented treatment failure or lack of improvement in at least one objective sign or symptom of infection after ≥48 hours of antibiotics.

Where it's running

  • Children's Hospital of Orange County Southwest Tower
    Orange, California, United States
    Recruiting
  • Children's Hospital of Orange County
    Orange, California, United States
    Recruiting
  • Children's Hospital Colorado
    Aurora, Colorado, United States
    Recruiting
  • Riley Hospital for Children at Indiana University Health
    Indianapolis, Indiana, United States
    Recruiting
  • Norton Children's Hospital
    Louisville, Kentucky, United States
    Recruiting
  • Novak Center for Children's Health
    Louisville, Kentucky, United States
    Recruiting
Show 26 more locations
  • University of Louisville, Norton Children's Research Institute
    Louisville, Kentucky, United States
    Recruiting
  • Tufts Medical Center
    Boston, Massachusetts, United States
    Recruiting
  • Duke University - Main Hospital and Clinics
    Durham, North Carolina, United States
    Recruiting
  • Memorial Hermann Hospital - Texas Medical Center
    Houston, Texas, United States
    Recruiting
  • The University of Texas Health Science Center at Houston
    Houston, Texas, United States
    Recruiting
  • Sanatorio Sagrado Corazón
    Ciudad Autónoma de Buenos Aires, Buenos Aires, Argentina
    Recruiting
  • Clinica Del Niño Y La Madre
    Mar del Plata, Buenos Aires, Argentina
    Recruiting
  • Clinica Privada del Sol S.A
    Córdoba, Córdoba Province, Argentina
    Recruiting
  • Hospital del Niño Jesús
    San Miguel de Tucumán, Tucumán Province, Argentina
    Recruiting
  • UMHAT Deva Maria
    Burgas, Bulgaria
    Recruiting
  • Umhat Kanev
    Rousse, Bulgaria
    Recruiting
  • Nirmal Hospital Pvt Ltd.
    Surat, Gujarat, India
    Recruiting
  • RajaRajeswari Medical College and Hospital
    Bengaluru, Karnataka, India
    Recruiting
  • Sahyadri Super Speciality Hospital
    Pune, Maharashtra, India
    Recruiting
  • Medanta Hospital Lucknow
    Lucknow, Uttar Pradesh, India
    Recruiting
  • Institute of Child Health
    Kolkata, West Bengal, India
    Recruiting
  • Schneider Children's Medical Center
    Petah Tikva, Central District, Israel
    Recruiting
  • Rambam Health Care Campus
    Haifa, Northern District, Israel
    Recruiting
  • Azienda Ospedaliera Universitaria Meyer IRCCS
    Florence, Florence, Italy
    Recruiting
  • Hospital Universitario La Paz
    Madrid, Madrid, Comunidad de, Spain
    Recruiting
  • Hsinchu Municipal Mackay Children's Hospital
    Hsinchu, Hsinchu, Taiwan
    Recruiting
  • Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation
    Hualien City, Hualien, Taiwan
    Recruiting
  • Taichung Veterans General Hospital
    Taichung, Taiwan
    Recruiting
  • Chang Gung Medical Foundation Linkou Chang Gung Memorial Hospital
    Taoyuan, Taiwan
    Recruiting
  • Ippokrateio General Hospital of Thessaloniki
    Thessaloniki, Kentrikí Makedonía, Greece
    Not yet recruiting
  • Hospital Universitario 12 de Octubre
    Madrid, Spain
    Not yet recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.