Clinical trial Recruiting at 16 sites Observational Ages 18 and up Men only

Database for Rezum Water Vapor Therapy for Prostate Issues

Official title: SteamOne - Prospective Database for Rezum Water Vapor Therapy of the Prostate

Run by University Hospital, Basel, Switzerland · NCT05495633 · Data updated 2026-11-12

This study is testing how well Rezum water vapor therapy works for men with prostate issues and urinary symptoms by collecting data from 1000 patients over five years.

Quick facts

Study typeObservational
Ages18 Years and up
SexMen only
Enrollment1000 (estimated)
SponsorUniversity Hospital, Basel, Switzerland
Academic / other
Locations19 sites (Graz and 18 other locations)
StatusRecruiting
StartedDecember 16, 2022
Main results expectedDecember 2031
Study endsDecember 2031
Registry record updatedOctober 20, 2026
Trial IDNCT05495633 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include male patients aged 18 and older who are undergoing Rezum treatment for prostate obstruction and LUTS.

Probably not a fit

Patients who are unable to provide informed consent or have significant cognitive impairments 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 observational study aims to collect and analyze clinical data on the efficacy, durability, and safety of Rezum water vapor therapy in treating benign prostate obstruction (BPO) and lower urinary tract symptoms (LUTS) in men. The study will involve a large cohort of 1000 patients across multiple centers, with a follow-up period of five years. Rezum therapy involves the injection of steam into the prostate to reduce tissue size and alleviate symptoms. The study will evaluate patient-reported outcomes and uroflowmetry data to assess treatment effectiveness in a real-world setting.

Why it matters

Potential benefit: If successful, this study could provide valuable insights into the long-term effectiveness and safety of Rezum therapy, potentially improving treatment options for men with BPO.

How similar studies have gone: While Rezum therapy has been approved, this study aims to gather extensive real-life data, making it a novel approach to understanding its long-term outcomes.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* All male patients who are treated with Rezum due to prostate obstruction and LUTS in the participating study centers can be included if certain inclusion criteria are met and some exclusion criteria are not present.
* The indication to perform Rezum needs to be made independently from the study. The decision for Rezum treatment is the responsibility of each individual practitioner and patient.
* Age ≥ 18 years
* Operated or supervision of surgery by a certified urologist
* Subgroups of special interest are e.g. catheter-dependent patients, patients with oral anticoagulation, patients with preoperative urodynamic pressure-flow investigation (not older than 6 months) or patients with prostates bigger than 80 ml

Exclusion Criteria:

* Missing informed consent
* Lack of ability to answer questionnaires due to laguage problems or mental incapacity (e.g. in dementia, mental disability)
* Patient does not have a personal email address available and the survey cannot be completed via a relative's email address and the patient is not willing to complete the survey on the tablet at the clinic
* Known or suspected neurogenic bladder dysfunction in e.g. Parkinson's disease, multiple sclerosis or other neurological diseases with possible effects on bladder function
* History of malignant bladder tumor in the last two years (including CIS) or currently present malignant bladder tumor at time of Rezum treatment (including CIS)
* Previous operation(s) on the prostate, except prostate biopsy, if this was performed more than 4 weeks ago at time of Rezum treatment
* Previous operation(s) on the bladder neck
* Presence of bladder neck stenosis requiring treatment at time of Rezum treatment
* Planned combination of Rezum treatment concurrently with another urologic (\*) or non-urologic procedure

(\*) also the combination with a planned transurethral procedure is not allowed except for bladder stone removal

Where it's running

  • Alexianer St. Hedwig-Krankenhaus
    Berlin, Germany
    Recruiting
  • Universitätsklinikum Frankfurt
    Frankfurt, Germany
    Recruiting
  • Asklepios Westklinikum Hamburg GmbH
    Hamburg, Germany
    Recruiting
  • Urologische Gemeinschaftspraxis Prüner Gang
    Kiel, Germany
    Recruiting
  • Krankenhaus Maria Hilf - Alexianer Krefeld
    Krefeld, Germany
    Recruiting
  • Klinikum Nürnberg
    Nuremberg, Germany
    Recruiting
Show 13 more locations
  • Krankenhaus Reinbek St. Adolf Stift
    Reinbek, Germany
    Recruiting
  • Kliniken Sindelfingen
    Sindelfingen, Germany
    Recruiting
  • Kantonsspital Aarau
    Aarau, Aarau, Switzerland
    Recruiting
  • Hirslanden Klinik St. Anna
    Lucerne, Canton of Lucerne, Switzerland
    Recruiting
  • University Hospital Basel, Department of Urology
    Basel, Switzerland
    Recruiting
  • Inselspital Bern
    Bern, Switzerland
    Recruiting
  • Kantonsspital Luzern
    Lucerne, Switzerland
    Recruiting
  • Uroviva AG
    Rothrist, Switzerland
    Recruiting
  • Kantonsspital St. Gallen
    Sankt Gallen, Switzerland
    Recruiting
  • Universitätsspital Zürich
    Zurich, Switzerland
    Recruiting
  • Universitätsklinikum Graz
    Graz, Austria
    Active not recruiting
  • Universitätsklinikum Hamburg-Eppendorf (UKE),
    Hamburg, Germany
    Not yet recruiting
  • Diakonie-Klinikum Stuttgart Diakonissenkrankenhaus und Paulinen gGmbH
    Stuttgart, Germany
    Not yet recruiting

Study contacts

  • Principal investigator: Felix Wieland, Dr. med. — University Hospital Basel, Department of Urology
  • Study coordinator: Niklas Simon, Study Coordinator
  • Email: Niklas.Simon@usb.ch
  • Phone: +41 615565616

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.