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Prostate HyperplasiaNCT05443451

BETTY: BEnign Prostatic Hyperplasia Transperineal Targeted Microwave therapY

A study testing 3D-Ultrasound-Guided Transperineal Microwave needle ablation of BPH in people with Prostate Hyperplasia, run by Chinese University of Hong Kong at 1 site in Hong Kong.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a pilot study on applying 3D-Ultrasound-Guided Transperineal Microwave needle ablation for men with symptomatic benign prostatic hyperplasia (BPH). Read more about this study

Who is it for?
Ages 50 years and older, men only
Conditions the study is for
Prostate Hyperplasia
What is being tested?
3D-Ultrasound-Guided Transperineal Microwave needle ablation of BPH
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
12 participants
Where
1 siteHong Kong
Study dates
8 Sep 2022to 30 Oct 2023
Phase
Interventional
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 50 years and older
  • Men only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Age over 50 years.
  • Benign prostatic hyperplasia with prostate size 30-80 cc
  • IPSS ≥ 14
  • PSA ≤ 4 ng/mL or PSA >4 ng/mL with no evidence of suspicious lesion on mpMRI
  • Maximum urine flow rate (Qmax) ≤ 15 mL/s.
  • Post-Void Residual ≤ 150 mL.
  • Patient suitable for IV sedation and/or spinal anaesthesia and/or general anaesthesia and focal microwave ablation.
  • Informed written consent

Who cannot join

  • Significant intravesical median lobe hyperplasia.
  • Suspicious lesion on mpMRI prostate
  • History of prostate, bladder or urethral surgery.
  • History of prostate cancer
  • Presence of stones, bladder diverticulum and/or bladder tumor
  • History of long-term indwelling catheter.
Show all 16Show fewer
  • Urethral stricture
  • Known coagulopathy or on anticoagulant
  • Presence of a pacemaker.
  • Active infection
  • Dysuria due to bladder dysfunction.
  • Serious medical illness, including any of the following: uncontrolled congestive heart failure, uncontrolled angina, myocardial infarction, cerebrovascular event within 6 months prior to the screening visit.
  • Neurological disorders that would impact bladder function (e.g., multiple sclerosis, Parkinson's disease, spinal cord injury).
  • Contraindications for mpMRI exam or MR contrast
  • Acute and/or chronic renal failure (GFR <50 ml/min and serum creatinine > 1.5 mg/d).
  • Patient currently participating in another interventional clinical trial.

Trial locations and contacts

1 site in 1 country.

Hong Kong1 site
  • Prince of Wales Hospital

    Hong Kong

Other trials in Hong Kong

About this study

Official title: 3D-Ultrasound-Guided Transperineal Microwave Needle Ablation for Men With Symptomatic Benign Prostatic Hyperplasia

This is a pilot study on applying 3D-Ultrasound-Guided Transperineal Microwave needle ablation for men with symptomatic benign prostatic hyperplasia (BPH).

Read the detailed description

This is a prospective, single centre, open-label and non-comparative trial planned on 12 patients. Patients who fit inclusion criteria would be recruited and offered microwave ablation to the enlarged prostate. The patients will be closely followed up to 6 months after treatment with serial assessment on safety and efficacy.

Being tested
3D-Ultrasound-Guided Transperineal Microwave needle ablation of BPH
Medical subject headings
Prostatic Hyperplasia

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • 3D-Ultrasound-Guided Transperineal Microwave needle ablation of BPHDevice

    The procedure will consist of a focal, transperineal, targeted microwave ablation of prostate adenoma. Surgical planning using 3D transrectal ultrasound and real-time monitoring of the ablation would preserve key anatomical landmarks such as the bladder neck, prostatic urethra and verumontanum. The Organ-Based Tracking (OBT®) patented technology would provide a 3D prostate model to facilitate real-time navigation-guided ablation and accurate mapping of treatment zone. The procedure will be conducted under general anaesthesia, spinal anaesthesia, or monitored anaesthetic care / sedation. An average number of one to three microwave ablations per lobe is expected, depending on the size and shape of each prostate. The microwave ablation parameters will be chosen intraoperatively. A urinary catheter may be necessary immediately after the procedure. Patients are planned to be discharged on the same day or the day after when they are fit for discharge.

Study groups in NCT05443451
Study groupRoleWhat they receive
Transperineal Microwave needle ablation for symptomatic BPHExperimentalNot described
Receives: Device: 3D-Ultrasound-Guided Transperineal Microwave needle ablation of BPH

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Adverse events (AE) and serious adverse events (SAE) related to the treatment

    The severity of AE is grade by Clavien-Dindo classification.

    Measured: At 1 month

Secondary outcomes (13)
  1. Prostate volume change

    Prostate volume change after treatment

    Measured: Baseline, 3 months, 6 months

  2. Urinary symptoms measured by International Prostate Symptom Score (IPSS) score

    Change in total scores in International Prostate Symptom Score (ranges from 0 to 35) questionnaires. The higher score, the more worse symptom.

    Measured: Baseline, 1 month, 3 months, 6 months

  3. Erectile function measured by International Index of Erectile Function 5-item version (IIEF-5) score

    Change in International Index of Erectile Function 5 questionnaire score (ranges from 0 to 25). The higher score, the more worse symptom.

    Measured: Baseline, 1 month, 3 months, 6 months

  4. Ejaculatory function measured by MSHQ-EjD-SF (function and bother) score

    Change in MSHQ-EjD-SF questionnaire score (Range from 1-15 for function and and 0-5 for bother). The higher score, the more worse symptom.

    Measured: Baseline, 1 month, 3 months, 6 months

  5. Change in urodynamic in uroflowmetry

    Change in urodynamic function assessed by uroflowmetry, parameters include voided volume, maximum flow rate and post-void residual.

    Measured: Baseline, 1 month, 3 months, 6 months

  6. PSA change

    PSA change after treatment

    Measured: Baseline, 3 months, 6 months

  7. Average patient post-operative pain level

    Assessed by a pain numeric rating scale, Score 0-10, the higher score the worsen pain

    Measured: Baseline, 2 and 4 hours after the procedure and at 1-week

  8. Patient quality of life

    Assessed with the EQ-5D-5L questionnaire, the higher the score the better in quality of life

    Measured: Baseline, 1-week, 1-month, 3-month, and 6-month,

  9. Patient satisfaction

    Assessed with the PGI-I questionnaire,the lower score the more satisfaction

    Measured: Baseline, 1-week, 1-month, 3-month, and 6-month,

  10. Ease of the procedure measured with a score chosen by the operator

    1: easy, 2: moderate, 3: difficult

    Measured: Post procedure immediately

  11. Ablation treatment time

    Duration of the ablation procedure

    Measured: Intra-operation

  12. Length of hospital stay

    Total number of days of hospitalization for the surgical procedure

    Measured: The total number of days of hospitalization for this surgical procedure up to day 30 after the procedure]

  13. Operation time

    Duration of patients stay in Operation Room

    Measured: Intra-operation

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted5 Jul 2022
  2. Study start8 Sep 2022
  3. Primary completion5 Oct 2023
  4. Study completion30 Oct 2023

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
12 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05443451
Sponsor's protocol ID
CRE 2022.249
Status last verified
Jun 2026
First submitted
22 Jun 2022
Last updated
6 Nov 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No

Publications

  • Zhang W, Zhang X, Li H, Wu F, Wang H, Zhao M, Hu H, Xu K. Prevalence of lower urinary tract symptoms suggestive of benign prostatic hyperplasia (LUTS/BPH) in China: results from the China Health and Retirement Longitudinal Study. BMJ Open. 2019 Jun 19;9(6):e022792. doi: 10.1136/bmjopen-2018-022792.

    PubMed 31221864
  • Roehrborn CG, Siami P, Barkin J, Damiao R, Major-Walker K, Nandy I, Morrill BB, Gagnier RP, Montorsi F; CombAT Study Group. The effects of combination therapy with dutasteride and tamsulosin on clinical outcomes in men with symptomatic benign prostatic hyperplasia: 4-year results from the CombAT study. Eur Urol. 2010 Jan;57(1):123-31. doi: 10.1016/j.eururo.2009.09.035. Epub 2009 Sep 19.

    PubMed 19825505
  • Ng CF, Yee CH, Chan CK, Wong HM, Chiu PK, Tsu JH, Teoh JY, Ho KL. Bipolar transurethral vapourisation versus monopolar transurethral resection of prostate: a randomised controlled trial. Hong Kong Med J. 2017 Jun;23 Suppl 2(3):32-34. No abstract available.

    PubMed 29938669
  • Yee CH, Wong JH, Chiu PK, Chan CK, Lee WM, Tsu JH, Teoh JY, Ng CF. Short-stay transurethral prostate surgery: A randomized controlled trial comparing transurethral resection in saline bipolar transurethral vaporization of the prostate with monopolar transurethral resection. Asian J Endosc Surg. 2015 Aug;8(3):316-22. doi: 10.1111/ases.12197. Epub 2015 Jun 3.

    PubMed 26042336
  • Madersbacher S, Lackner J, Brossner C, Rohlich M, Stancik I, Willinger M, Schatzl G; Prostate Study Group of the Austrian Society of Urology. Reoperation, myocardial infarction and mortality after transurethral and open prostatectomy: a nation-wide, long-term analysis of 23,123 cases. Eur Urol. 2005 Apr;47(4):499-504. doi: 10.1016/j.eururo.2004.12.010. Epub 2005 Jan 23.

    PubMed 15774249
  • Raizenne BL, Zheng X, Mao J, Zorn KC, Cho A, Elterman D, Bhojani N, Sedrakyan A, Chughtai B. Real-world data comparing minimally invasive surgeries for benign prostatic hyperplasia. World J Urol. 2022 May;40(5):1185-1193. doi: 10.1007/s00345-021-03926-9. Epub 2022 Feb 2.

    PubMed 35107632
  • Chughtai B, Elterman D, Shore N, Gittleman M, Motola J, Pike S, Hermann C, Terrens W, Kohan A, Gonzalez RR, Katz A, Schiff J, Goldfischer E, Grunberger I, Tu LM, Alshak MN, Kaminetzky J. The iTind Temporarily Implanted Nitinol Device for the Treatment of Lower Urinary Tract Symptoms Secondary to Benign Prostatic Hyperplasia: A Multicenter, Randomized, Controlled Trial. Urology. 2021 Jul;153:270-276. doi: 10.1016/j.urology.2020.12.022. Epub 2020 Dec 26.

    PubMed 33373708
  • McVary KT, Gittelman MC, Goldberg KA, Patel K, Shore ND, Levin RM, Pliskin M, Beahrs JR, Prall D, Kaminetsky J, Cowan BE, Cantrill CH, Mynderse LA, Ulchaker JC, Tadros NN, Gange SN, Roehrborn CG. Final 5-Year Outcomes of the Multicenter Randomized Sham-Controlled Trial of a Water Vapor Thermal Therapy for Treatment of Moderate to Severe Lower Urinary Tract Symptoms Secondary to Benign Prostatic Hyperplasia. J Urol. 2021 Sep;206(3):715-724. doi: 10.1097/JU.0000000000001778. Epub 2021 Apr 19.

    PubMed 33872051
  • Chiu PK, Lo KL, Teoh JY, Ma SF, Leung CH, Wong HF, Li KM, Sae-Lo K, Kwok SW, Li SY, Yee CH, Hou SM, Ng CF. Sectoral cancer detection and tolerability of freehand transperineal prostate biopsy under local anaesthesia. Prostate Cancer Prostatic Dis. 2021 Jun;24(2):431-438. doi: 10.1038/s41391-020-00293-1. Epub 2020 Sep 30.

    PubMed 32999465
  • Barry Delongchamps N, Schull A, Anract J, Abecassis JP, Zerbib M, Sibony M, Jilet L, Abdoul H, Goffin V, Peyromaure M. Feasibility and safety of targeted focal microwave ablation of the index tumor in patients with low to intermediate risk prostate cancer: Results of the FOSTINE trial. PLoS One. 2021 Jul 14;16(7):e0252040. doi: 10.1371/journal.pone.0252040. eCollection 2021.

    PubMed 34260598
  • Lo KL, Chui KL, Leung CH, Ma SF, Lim K, Ng T, Wong J, Li JKM, Mak SK, Ng CF. Outcomes of transperineal and transrectal ultrasound-guided prostate biopsy. Hong Kong Med J. 2019 Jun;25(3):209-215. doi: 10.12809/hkmj187599. Epub 2019 May 29.

    PubMed 31178436
  • Dindo D, Demartines N, Clavien PA. Classification of surgical complications: a new proposal with evaluation in a cohort of 6336 patients and results of a survey. Ann Surg. 2004 Aug;240(2):205-13. doi: 10.1097/01.sla.0000133083.54934.ae.

    PubMed 15273542

Questions about this trial

What is this clinical trial studying?

A study testing 3D-Ultrasound-Guided Transperineal Microwave needle ablation of BPH in people with Prostate Hyperplasia, run by Chinese University of Hong Kong at 1 site in Hong Kong.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 16 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 6 Nov 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Hong Kong. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Adverse events (AE) and serious adverse events (SAE) related to the treatment (time frame: At 1 month). It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT05443451, which also lists 12 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Nov 2026.

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