Clinical trial Recruiting at 1 site Interventional Ages 18 and up Men only

Bladder cancer and urinary microbiota in adults

Official title: BLADDER MICROBIOTA AND BLADDER CANCER

Run by Centre Hospitalier Universitaire de Nice · NCT07080333 · Data updated 2026-11-12

This study looks to see if the bacteria in the bladder relate to bladder cancer in adults.

Quick facts

Study typeInterventional
Ages18 Years and up
SexMen only
Enrollment95 (estimated)
SponsorCentre Hospitalier Universitaire de Nice
Academic / other
Locations8 sites (Cannes and 7 other locations)
StatusRecruiting
StartedMarch 23, 2026
Main results expectedApril 30, 2028
Study endsOctober 30, 2028
Registry record updatedMay 26, 2026
Trial IDNCT07080333 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adult men over 18 with suspected bladder cancer undergoing diagnostic procedures and meeting consent and safety criteria.

Probably not a fit

Patients with bladder cancer due to causes not related to microbiota or those who do not show a microbiota association may not benefit from any direct impact.

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

What this trial studies

In France, bladder cancer is a common cancer that mainly affects older men, with smoking as a major risk factor. Researchers will examine bladder tissue samples from adults undergoing diagnostic procedures to explore how urinary microbiota may be linked to bladder cancer. The study uses a biopsy-based approach to collect tissue for microbiota analysis. It is an observational/interventional design focusing on the association between microbiota and bladder cancer characteristics. Eligible participants are adults with suspected bladder cancer who give informed consent and are not recently treated with antibiotics or undergoing active infections at enrollment.

Why it matters

Potential benefit: If successful, the findings could improve understanding of bladder cancer risks and may guide future prevention or diagnostic strategies.

How similar studies have gone: Previous research has linked urinary microbiota imbalances to various urogenital conditions, but direct links to bladder cancer are exploratory and evidence is still emerging.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age \> 18 years old
* Male
* First RTUV for suspected CV in the presence of macroscopic haematuria or other clinical signs and/or urinary cytology and/or cystoscopy and/or imaging tests suggestive of CV
* Signed informed consent form
* Affiliation with a social security scheme

Exclusion Criteria:

* Antibiotic use within 3 months prior to inclusion
* Current urinary tract infection (urine culture recommended by the AFU prior to RTUV)
* History of surgical treatment of the urinary and genital tracts within the last 6 months prior to inclusion
* History of RTUV
* History of pelvic radiotherapy
* Interstitial cystitis
* Patients with an indwelling urinary catheter
* Vulnerable patients: minors, patients under guardianship or curatorship
* Patients with benign tumours after receipt of the pathological report (inverted papilloma, non-tumour inflammatory lesion)

Where it's running

  • Nice University Hospital
    Nice, France
    Recruiting
  • Cannes Hospital
    Cannes, France
    Not yet recruiting
  • Marseille university Hospital
    Marseille, France
    Not yet recruiting
  • Menton Hospital
    Menton, France
    Not yet recruiting
  • Nimes University hospital
    Nîmes, France
    Not yet recruiting
  • Paris University Hospital
    Paris, France
    Not yet recruiting
Show 2 more locations
  • Rennes University Hospital
    Rennes, France
    Not yet recruiting
  • Tours University Hospital
    Tours, France
    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.