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Not yet recruitingNCT07430423Updated Oct 21, 2026

The FLOW Registry.

An observational study in Benign Prostatic Hyperplasia (BPH), sponsored by University of Chicago. Not yet recruiting at 1 site in United States. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-10-21.

Sponsored by University of Chicago · Observational

Updated Oct 21, 2026Start date movedGo to Updates ↓
Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
3,000
Ages
18 Years and older
Sex
Male
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Study summary

The purpose of this study is to create a database and prospective registry for data collection on patients with benign prostatic hyperplasia undergoing Aquablation of the prostate. All patients undergoing Aquablation of the prostate will be enrolled in the registry. Historical data from 1/1/2024- 11/30/2025 will be added through chart review. Current and future patient data will be collected through chart review during the subject's clinical care. Only data available in the electronic medical record will be collected and no additional data will be collected for research purposes. No biospecimens will be collected, and there are no physical risks from study participation.

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Conditions studied

  • Benign Prostatic Hyperplasia (BPH)

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03

In context

Prostatic Hyperplasia

827 studies on the registry are indexed under Prostatic Hyperplasia; 179 are open to participants now.

This study's planned enrollment of 3,000 is above the median of 250 across 177 observational studies indexed under Prostatic Hyperplasia.

Browse Prostatic Hyperplasia studies →

Lead sponsor

University of Chicago is the lead sponsor of 924 studies on the registry; 185 are open to participants now.

Of its 103 completed or terminated interventional studies of FDA-regulated products, 72 (70%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Patients with benign prostatic hyperplasia undergoing Aquablation of the prostate

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Male sex
  • ≥18 years of age
  • Diagnosis of benign prostatic hyperplasia
  • Scheduled to undergo or have already undergone Aquablation as part of routine clinical care or any ongoing clinical trials
  • Aquablation performed with ultrasound guided, robotic assisted waterjet. Newer methods and instrumentation continue to be developed to ablate tissue, and these energy sources can be entered into the registry as clinical use begins.

Exclusion criteria

Exclusion Criteria:

  • Under 18 Years of age.
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Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
3,000 participants (estimated)
Target follow-up
10 Years
Patient registry
Yes

Groups and cohorts

  • Benign Prostatic Hyperplasia Patients Undergoing Prostate Aquablation

    Patients with benign prostatic hyperplasia undergoing aquablation of the prostate for the management of benign prostatic hyperplasia.

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What researchers measure

Primary outcomes

  1. Efficacy of aquablation procedure in patients with benign prostatic hyperplasia as assessed by the change in mean International Prostate Symptom Score (IPSS)

    Time frame: Baseline to follow up every 6 months (at minimum) for 2 years, and annually through 10 years of total after prostate aquablation

  2. Safety of the aquablation procedure in patients with BPH.

    Number of incidences of Clavien-Dindo Grade ≥ II complications

    Time frame: Baseline to 30 days post-aquablation

  3. Efficacy of aquablation procedure in patients with benign prostatic hyperplasia as assessed by the change in Q max/uroflowmetry.

    Time frame: Baseline to follow up every 6 months (at minimum) for 2 years, and annually through 10 years of total after prostate aquablation.

Secondary outcomes

  1. Change from baseline in urinary function

    To assess the change from baseline in urinary function

    Time frame: Baseline and 3, 6, 12, and 24 months post-procedure

  2. Association between preoperative characteristics and clinical outcomes

    To identify preoperative predictors of improved outcomes .

    Time frame: Baseline through 24 months post-procedure

  3. Rate of procedural failure requiring reoperation for benign prostatic hyperplasia

    To determine the rate of procedural failure, defined as the need for re-operation for BPH (e.g., transurethral resection of the prostate, Holmium laser surgery) within 24 months.

    Time frame: Baseline to 24 months post-procedure

  4. Incidence of urethral stricture or bladder neck contracture

    Incidence of urethral stricture or bladder neck contracture diagnosed during follow-up after the index procedure.

    Time frame: 12 and 24 months post-procedure

  5. Relationship between prostate volume reduction and prostate-specific antigen (PSA) reduction

    To analyze the correlation between prostate volume reduction (via TRUS/MRI) and PSA reduction at 6 months.

    Time frame: Baseline to 6 months post-procedure

  6. Change from baseline in sexual function as assessed by the change in Male Sexual Health Questionnaire - Ejaculation Short Form (MSHQ-EjD)

    To assess the change from baseline in sexual function

    Time frame: Baseline and 3, 6, 12, and 24 months post-procedure

  7. Change from baseline in quality of life scores as assess by the The International Prostate Symptom Score (IPSS-QoL)

    To assess the change from baseline in quality of life.

    Time frame: Baseline and 3, 6, 12, and 24 months post-procedure

  8. Change from baseline in sexual function as assessed by the change in SEXUAL HEALTH INVENTORY FOR MEN (SHIM)

    To assess the change from baseline in sexual function

    Time frame: Baseline and 3, 6, 12, and 24 months post-procedure

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Study locations

1 site
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Updates

1 registry update since Sep 25, 2026
Start date
Aug 2026→Nov 2026
Oct 21, 2026
Show all 1 update
  1. Oct 21, 2026
    Start date Aug 2026→Nov 2026
    + 1 other change: verification date

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

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Registry details

Key details

Study ID
NCT07430423
Responsible party
Sponsor
First posted
Feb 24, 2026
Start date
Nov 2026 (estimated)
Primary completion
Dec 2036 (estimated)
Completion
Dec 2036 (estimated)
Last update
Oct 21, 2026

Study contacts

Mahmoud Khalil
Contact
mahmoud.khalil@bsd.uchicago.edu
773-702-6105
mahmoud khalil
principal investigator · University of Chicago

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

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