Phase 3 study

Recruiting Phase 3

Sources: ClinicalTrials.gov Checked: 11 October 2026 Not medical advice

This trial at a glance

Status Recruiting
Phase Phase 3
Sponsor University of Sydney
Registry number NCT05709028
Started 2 August 2023 Today 16 October 2026 Estimated completion 1 August 2027

Where this trial is running

Trial sites and the status recorded for each
SiteCityState or countryStatus at this site
Sydney Childrens Hospital Sydney NSW Recruiting
The Children's Hospital at Westmead Sydney NSW Not yet recruiting
Queensland Children's Hospital Brisbane QLD Recruiting
Royal Childrens Hospital Melbourne VIC Recruiting
Perth Children's Hospital Perth WA Recruiting

voxsanity.com.au · trial sites from public registries · registry record synced 11 October 2026 · not medical advice

Who can join

Age 6 Months to 17 Years
Sex Anyone, regardless of sex
Healthy volunteers Not accepted
Enrolment target 300

The official eligibility criteria

Registry text, reproduced exactly. These are the words the trial's sponsor published on ClinicalTrials.gov. They have not been edited, shortened or rewritten, and they are written for researchers rather than for patients.

Inclusion Criteria:

Children aged ≥6 months to \<18 years with:

1. Symptoms consistent with a clinical diagnosis of a UTI (as per the treating clinician); AND

2. Microbiological confirmation: Defined as a urine culture revealing a predominant growth of a bacterial uropathogen \[≥10\^6 CFU/L, or ≥10\^3 CFU/mL\] together with ≥10x10\^6 white blood cells on microscopy; AND

3. The bacterial uropathogen is a non-pseudomonal gram-negative organism likely to cause urinary tract infections in children; being one of either: Escherichia coli, Proteus spp., Klebsiella spp., Enterobacter spp., Serratia spp., or Citrobacter spp., AND

4. The uropathogen has in vitro evidence of resistance to all oral penicillins and oral first- and second- generation cephalosporins (or is presumed to be resistant based on the pattern of phenotypic testing); AND

5. The patient has not yet received \>48 hours of antibiotics with in vitro activity against the urinary pathogen prior to enrolment.

Exclusion Criteria:

6. Evidence of bacteraemia due to the same uropathogen within the same clinical illness; OR

7. Evidence of infection at a secondary site (such as meningitis or endocarditis); OR

8. Children with features suggestive of sepsis (defined as requiring inotropic support, or \>20ml/kg fluid bolus); OR

9. Children who are unable to tolerate or absorb oral antibiotics; OR

10. Children with severe renal unsifficiency (creatinine clearance \<10ml/minute/1.73m\^2); OR

11. Known allergy to fosfomycin; OR

12. A decision by the primary treating physician that enrolment in the trial is not in the child's best interest.

Dates on the record

Started 2 August 2023
Estimated completion 1 August 2027
Registry last updated 6 June 2024
Checked by Voxsanity 11 October 2026

Results, publications and the official record

Sources and dates

  • ClinicalTrials.gov – the record this page reformats
  • ClinicalTrials.gov processing date: 6 June 2024.
  • This page last checked by Voxsanity: 11 October 2026.

Voxsanity reformats data from public registries into this layout. It does not edit, interpret or add to what the registry published.

Not medical advice.

Individual trial records are refreshed on a rolling basis rather than all at once, so a record may be up to several weeks old. Each trial page and trial card shows the date its own record was last synced. Where a record has lagged, its status, sites and enrolment can differ from the current registry state in either direction, so check the registry link on the trial page before acting on them.

Letter for your doctor

A one-page summary of this trial to print or email to your GP. It carries the registry's own record of the trial and its eligibility criteria, and nothing Voxsanity has written about whether it suits you.