Clinical trial Recruiting at 1 site Interventional Ages 45 and up Men only

Comparing Aquablation and Holmium Laser for Enlarged Prostate Treatment

Official title: Aquablation vs. Holmium Laser Enucleation of the Prostate in the Treatment of Benign Prostatic Hyperplasia in Medium to Large Size Prostates: A Prospective Randomized Trial

Run by Cantonal Hospital of St. Gallen · NCT04560907 · Data updated 2026-11-12

This study is testing if a new water-based treatment for enlarged prostates works as well as a traditional laser surgery for men who have symptoms from benign prostatic hyperplasia.

Quick facts

Study typeInterventional
Ages45 Years and up
SexMen only
Enrollment120 (estimated)
SponsorCantonal Hospital of St. Gallen
Academic / other
Locations1 site (Sankt Gallen)
StatusRecruiting
StartedJanuary 5, 2021
Main results expectedApril 2023
Study endsNovember 2027
Registry record updatedJanuary 8, 2021
Trial IDNCT04560907 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are men aged 45 and older with a prostate size between 50 ml and 150 ml who are refractory to medical therapy.

Probably not a fit

Patients with neurogenic lower urinary tract dysfunction or pre-existing prostate cancer 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 clinical trial evaluates the effectiveness of aquablation versus Holmium laser enucleation of the prostate (HoLEP) in treating benign prostatic hyperplasia (BPH) in men with medium to large size prostates. Aquablation utilizes real-time ultrasound imaging and a robotic water jet to remove prostate tissue, while HoLEP is a well-established surgical method. The study aims to determine if aquablation can achieve similar patient-reported and functional outcomes as HoLEP, providing a potentially less invasive option for patients. Participants will be men aged 45 and older who are candidates for HoLEP and have specific prostate size and symptom criteria.

Why it matters

Potential benefit: If successful, this study could provide a less invasive and more accessible treatment option for men suffering from BPH.

How similar studies have gone: Previous studies have shown that aquablation can achieve functional results comparable to traditional methods for smaller prostates, but this specific comparison with HoLEP is novel.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Men ≥45 years of age

  * Patient must be a candidate for HoLEP
  * Refractory to medical therapy or patient is not willing to consider (further) medical treatment
  * Patient has a prostate size of at least 50 ml and not more than 150ml, measured by transrectal ultrasound (TRUS)
  * IPSS ≥12
  * QoL≥3
  * Qmax ≤ 15 ml/s with a minimum voided volume ≥ 125 ml or patient in urinary retention
  * Written informed consent

Exclusion Criteria:

* Neurogenic lower urinary tract dysfunction

  * Urethral stenosis
  * Preinterventionally proven adenocarcinoma of the prostate
  * Nickel allergy
  * Not able to complete questionnaires due to cognitive or thought disorders
  * Language skills insufficient for informed consent and / or completion of questionnaires

Where it's running

  • Cantonal Hospital St. Gallen
    Sankt Gallen, Switzerland
    Recruiting

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.