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FOSFORMEN : Randomized, multicenter, non-inferiority trial comparing the efficacy of fosfomycin versus fluoroquinolones or cotrimoxazole as oral follow-up treatment in febrile urinary tract infections in men caused by susceptible enterobacteria
EU CTIS ID: 2026-525972-25-00
What this study is testing
To demonstrate that the fosfomycin-trometamol (FT) combination is not inferior to fluoroquinolones (FQ) or cotrimoxazole (TMP-SMX) as oral step-down therapy in febrile male urinary tract infections caused by Escherichia coli.
- Therapeutic confirmatory (Phase III)
A plain-language read of the study's public EU CTIS listing. The study team confirms the details.
Who can take part
You may be able to join if
- Male
- Age ≥ 18
- Body temperature ≥ 38°C within the 72 hours preceding the diagnosis of UTI
- At least one of the following symptoms : dysuria, higher urinary frequency, urgency, hematuria, suprapubic pain, prostatic pain, flank pain, or perineal pain
- Positive urine microbiological examination (urine culture) : Sample collected before initiation of the empiric antibiotic therapy, ≥ 10 leukocytes/µL, and monomicrobial culture positive for E. coli with bacteriuria ≥ 103 CFU/mL
- The strain must be suceptible to fosfomycin and to either FQ or TMP-SMX according to EUCAST
You likely can't join if
- Presence of another condition that could explain the fever
- UTI treated within the past 3 months
- High probability of death within 3 months
- Major cognitive disorders
- Patients deprived of their liberty by judicial or administrative decision, under guardianship or curatorship
- Lack of social security coverage
See the full eligibility criteria
- Male
- Age ≥ 18
- Body temperature ≥ 38°C within the 72 hours preceding the diagnosis of UTI
- At least one of the following symptoms : dysuria, higher urinary frequency, urgency, hematuria, suprapubic pain, prostatic pain, flank pain, or perineal pain
- Positive urine microbiological examination (urine culture) : Sample collected before initiation of the empiric antibiotic therapy, ≥ 10 leukocytes/µL, and monomicrobial culture positive for E. coli with bacteriuria ≥ 103 CFU/mL
- The strain must be suceptible to fosfomycin and to either FQ or TMP-SMX according to EUCAST
- The strain must be suceptible to the empiric antibiotic therapy received
- Ability to take oral treatment
- Favorable clinical evolution after receiving effective empiric antibiotic therapy for 72 ± 24 hours ; favorable evolution is defined as body temperature < 38°C with clinical improvement of urinary tract infection signs and symptomps present at diagnosis
- Presence of another condition that could explain the fever
- UTI treated within the past 3 months
- High probability of death within 3 months
- Major cognitive disorders
- Patients deprived of their liberty by judicial or administrative decision, under guardianship or curatorship
- Lack of social security coverage
- Absence of written informed consent
- Participation in another interventional research protocol
- Individuals depreived of liberty by juriducal or administrative decision
- Septic shock of urinary origin
- Need for a urological procedure
- Anatomical abnormalities of the urinary tract (e.g., urinary prostheses and implants [except JJ], Bricker, neobladder, total prostatectomy, uretrestomy, nephrostomy, urinary fistula)
- Presence of an indwelling urinary catheter, except of placed during the current UTI episode
- Neurogenic bladder
- Immunosupression
- Contraindication to the use of FQ, TMP-SMX or FT
- Severe chronic kidney disease with an estimated flomerular filtration rate < 20 mL/min
The study team makes the final eligibility decision.
Questions & answers
Do participants get paid in this trial?
This listing doesn't specify compensation. Many trials still reimburse travel or offer a stipend, so it's worth asking the study team when you connect.
Is it free to join, and do I need insurance?
Searching and applying through BridgeMD is free. In clinical trials the study-related treatment and visits are generally provided at no cost to you. You usually don't need insurance to take part - confirm specifics with the study team.
How long does this study last?
The listing doesn't state an exact length. The study team walks you through the schedule and number of visits before you decide to enroll.
Who can join this trial?
This study is enrolling male, 18-64 years, 65+ years. The study team makes the final eligibility decision.
Explore other conditions
BridgeMD is an information and trial-matching tool - not medical advice, and not the study sponsor. Details come from EU CTIS; the study team decides eligibility.