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CompletedNCT06600893Updated Sep 19, 2024

Sham-Controlled Prospective Study Characterizing Erectile Tissue Ultrasound Changes Resulting From Penile LiSWT

An interventional study of Low intensity shockwave therapy (LiSWT) and Sham in Erectile Dysfunctions, sponsored by San Diego Sexual Medicine. Completed at 1 site in United States. Open to male participants aged 21 Years to 80 Years. Per ClinicalTrials.gov, last updated 2024-09-19.

Sponsored by San Diego Sexual Medicine · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was Jun 2022, 4 years 3 months ago, and no results have been posted to the registry.
  • Registered 5 years 1 month after the study started (first participant enrolled Aug 2019, registered Sep 2024).
Phase
Not applicable
Study type
Interventional
Enrollment
35
Allocation
Randomized
Ages
21 Years to 80 Years
Sex
Male
01

Study summary

The primary goal of this single blind, prospective sham-controlled clinical trial is to assess safety and efficacy of low intensity shockwave therapy (LiSWT) to improve erectile function in men 21-80 years of age with erectile dysfunction naive to radial ballistic acoustic wave and LiSWT. The main questions it aims to answer are:

  • Does homogeneity/inhomogeneity of corporal cavernosal tissue improve using Grayscale ultrasound (GUS) when comparing sham to active treatment groups?
  • Do peak systolic velocity (PSV) and end diastolic velocity (EDV) improve using color duplex Doppler ultrasound when comparing sham to active treatment groups?
  • Do the International Index of Erectile Function (IIEF), its erectile function domain (IIEF-EF) and question 3 of the Sexual Encounter Profile (SEP) improve comparing sham to active treatment groups?
Read the detailed description

This is a single site sham-controlled clinical trial to be conducted at San Diego Sexual Medicine in San Diego, California. Subjects meeting inclusion and exclusion criteria will be randomized to one of two arms, each 2:1 active to sham, treated in 3-week cycles. Arm 1 consists of 5000 shocks the first week and two weeks off for each of three treatment cycles. Arm 2 is made up of 5000 shocks the first week and 3000 active shocks the second and third weeks followed by three weeks without treatment, and then 5000, 3000 and 3000 shocks again over the next three weeks. Each of these is followed by the first follow-up visit at 20 weeks after the first treatment, when GUS and DUS is repeated and validated instruments completed, at which time treatment will be unblinded. SEP diaries will be completed during sexual activity in the screening period and during the 4 weeks prior to the follow up visit. Those subjects assigned to sham will be crossed over to the opposite arm for active treatment (arm 1 sham goes to arm 2 open label and arm 2 sham to arm 1 open label) and begin active treatment with decreased intervals between shocks and therefore decreased number of shocks needed, with 3500 rather than 5000 shocks and 2000 rather than 3000 shocks at a lower frequency at that visit after completing the follow up procedures. Subjects assigned initially to the active arm will have a second follow up 32 weeks after the first treatment, and complete SEP diaries during the 4 weeks preceding this visit. GUS and DUS is performed and validated instruments completed at the last follow up.

02

Conditions studied

  • Erectile Dysfunctions

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Keywords

  • low intensity shockwave therapy
  • erectile dysfunction
  • grayscale ultrasound
  • duplex Doppler ultrasound
  • erectile tissue homogeneity/inhomogeneity
03

In context

Erectile Dysfunction

683 studies on the registry are indexed under Erectile Dysfunction; 117 are open to participants now.

This study's enrollment of 35 is below the median of 72 across 542 interventional studies indexed under Erectile Dysfunction.

Browse Erectile Dysfunction studies →

Lead sponsor

San Diego Sexual Medicine is the lead sponsor of 5 studies on the registry; 2 are open to participants now.

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

04

Who can participate

Ages eligible
21 Years to 80 Years
Sexes eligible
Male
Accepts healthy volunteers
No

Inclusion criteria

  1. Subject provides written informed consent and HIPAA authorization before any study procedures are conducted;
  2. Subject is male;
  3. Subject is aged 21-80 years;
  4. Subject is in a relationship with a female partner for at least 3 months;
  5. Subject has a body mass index (BMI) \< 37 kg/m2;
  6. Subject has erectile dysfunction;
  7. Subject has testosterone ≥ 300;
  8. Subject has a prostate specific antigen (PSA) \< 4.0;
  9. Subject is willing to attempt sexual activity at least 4 times during the screening period and 4 weeks before each follow-up visit;
  10. Subject is willing to stop all erectile function aids (e.g. prescription and non-prescription medications, injections, vacuum erection devices, constriction ring) during the screening period and 4 weeks before each follow-up visit;
  11. Subject agrees to comply with the study procedures and visits.

Exclusion criteria

Exclusion Criteria:

  1. Subject has been treated with acoustic wave previously;
  2. Subject has a pacemaker or implanted defibrillator;
  3. Subject has clinically significant findings on physical examination;
  4. Subject has sciatica or severe back pain;
  5. Subject has uncontrolled hypertension;
  6. Subject has uncontrolled hypogonadism;
  7. Subject is unwilling to maintain testosterone replacement therapy if currently using testosterone to treat hypogonadism;
  8. Subject scores ≥ 26 on the IIEF;
  9. Subject has homogenous corpora cavernosa on grey scale ultrasound;
  10. Subject has any chronic medical condition or psychologic disorder that the Principal Investigator feels makes him ineligible for the study;
  11. Subject has lesions or active infections on the penis or perineum;
  12. Subject is unwilling to remove piercings from the genital region;
  13. Subject has a history of substance abuse within 12 months prior, or consuming > 14 alcoholic drinks per week;
  14. Subject has received an investigational drug within 30 days prior to signing consent;
  15. Subject has received platelet rich plasma (PRP) within 3 months of signing consent;
  16. Subject has received stem cell within 6 months of signing consent;
  17. Subject has any condition or exhibits behavior that indicates to the Principal Investigator that the Subject is unlikely to be compliant with study procedures and visits.
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
Double (Participant, Outcomes assessor)
Enrollment
35 participants (actual)

Study arms

  • Sham comparator
    Sham Arm 1-Simulated Low Intensity Shockwave Therapy

    Using the shockwave device, 5000 simulated low intensity shockwave therapy delivered week 0, week 3, week 6

    Device: Sham

  • Experimental
    Active Arm 1- Low Intensity Shockwave Therapy

    Using the shockwave device, 5000 low intensity shockwave therapy delivered week 0, week 3, week 6

    Device: Low intensity shockwave therapy (LiSWT)

  • Sham comparator
    Sham Arm 2 - Simulated Low Intensity Shockwave Therapy

    Using the shockwave device, 5000 simulated low intensity shockwave therapy delivered week 0, 3000 week 1, 3000 week 3, 5000 week 6, 3000 week 7, 3000 week 8

    Device: Sham

  • Experimental
    Active Arm 2 - Low Intensity Shockwave Therapy

    Using the shockwave device, 5000 low intensity shockwave therapy delivered week 0, 3000 week 1, 3000 week 3, 5000 week 6, 3000 week 7, 3000 week 8

    Device: Low intensity shockwave therapy (LiSWT)

Interventions

  • DeviceLow intensity shockwave therapy (LiSWT)

    The Urogold100™ uses electrohydraulic technology to generate low intensity shockwave energies in ranges of 0.1 - 0.18 mJ/mm2 (using 0.9 - 0.12 mJ/mm2 in this study) associated with biologic activities of stimulation of mechanosensors, activation of neo-angiogenesis processes, recruitment and activation of stem cell progenitor cells, improvement of microcirculation, nerve regeneration, remodeling of erectile tissue with increase in the muscle/collagen ratio and reducing inflammatory and cellular stress responses. The device uses the parabolic applicator OP 155 that generates a plasma-driven detonation resulting in a shockwave with a broad and widely-stretched 5 megapascal therapeutic volume. Due to the absence of a concentrated focus, a 14 mm wide shockwave is delivered to the erectile tissue with up to 30 mm penetration. LiSWT is delivered to Active Arms 1 and 2 per protocol. After unblinding at the first follow up visit, participants in Sham Arms 1 and 2 receive active LiSWT treatment

    Also known as: SoftWave TRT/UroGold 100MTS, Parabolic applicator OP 155

  • DeviceSham

    With the Urogold 100 turned on and with the participant wearing headphones and blinded by a pulled curtain the applicator is applied in a similar manner to when it is active treatment and the sound of shockwave playing in a blue tooth speaker the participant believes he is receiving active treatment but zero energy is delivered.

06

What researchers measure

Primary outcomes

  1. Grayscale ultrasound (GUS)

    Changes from low intensity shockwave treatment using Grayscale ultrasound to assess erectile tissue homogeneity of the corpora cavernosa comparing sham and active treatment groups

    Time frame: Baseline to follow up visit 1 at week 20, and follow up visit 2 at week 32 for those assigned initially to the active arm and week 40 to those initially assigned to sham

  2. Duplex Doppler ultrasound (DUS)

    Changes from low intensity shockwave treatment in peak systolic velocity (PSV) and end diastolic velocity (EDV) using color duplex Doppler ultrasound comparing sham and active treatment groups

    Time frame: Baseline to follow up visit 1 at week 20, and follow up visit 2 at week 32 for those assigned initially to the active arm and week 40 to those initially assigned to sham

Secondary outcomes

  1. International Index of Erectile Function (IIEF)

    Changes in IIEF, a validated patient reported outcome instrument used to assess sexual function will be compared from baseline to both follow up visit. This has a 4 week recall.

    Time frame: Baseline to follow up visit 1 at week 20, and follow up visit 2 at week 32 for those assigned initially to the active arm and week 40 to those initially assigned to sham

  2. IIEF Erectile Function Domain (IIEF-EF)

    Changes in the erectile function domain, IIEF-EF, used specifically to assess erectile function, will be compared from baseline to both follow up visit. This is a 4 week recall.

    Time frame: Baseline to follow up visit 1 at week 20, and follow up visit 2 at week 32 for those assigned initially to the active arm and week 40 to those initially assigned to sham

  3. Sexual Encounter Profile (SEP)

    The SEP diary is a standard assessment completed by a participant after each attempt at sexual activity.

    Time frame: Completed over the 4 week screening period, and during the 4 weeks prior to each follow up

Other outcomes

  1. International Prostate Symptom Score (IPSS)

    The IPSS is a validated patient reported outcome instrument to assesses lower urinary tract symptoms, comparing baseline to follow up visits in active and sham groups.

    Time frame: Baseline to follow up visit 1 at week 20, and follow up visit 2 at week 32 for those assigned initially to the active arm and week 40 to those initially assigned to sham

07

Study locations

1 site
  • San Diego Sexual Medicine
    San Diego, California 92120, United States
08

References and documents

Publications

  • Kitrey ND, Vardi Y, Appel B, Shechter A, Massarwi O, Abu-Ghanem Y, Gruenwald I. Low Intensity Shock Wave Treatment for Erectile Dysfunction-How Long Does the Effect Last? J Urol. 2018 Jul;200(1):167-170. doi: 10.1016/j.juro.2018.02.070. Epub 2018 Mar 1. PubMed 29477719 ↗
  • Kalyvianakis D, Hatzichristou D. Low-Intensity Shockwave Therapy Improves Hemodynamic Parameters in Patients With Vasculogenic Erectile Dysfunction: A Triplex Ultrasonography-Based Sham-Controlled Trial. J Sex Med. 2017 Jul;14(7):891-897. doi: 10.1016/j.jsxm.2017.05.012. Erratum In: J Sex Med. 2018 Feb;15(2):270. doi: 10.1016/j.jsxm.2017.12.001. PubMed 28673433 ↗
  • Kalyvianakis D, Memmos E, Mykoniatis I, Kapoteli P, Memmos D, Hatzichristou D. Low-Intensity Shockwave Therapy for Erectile Dysfunction: A Randomized Clinical Trial Comparing 2 Treatment Protocols and the Impact of Repeating Treatment. J Sex Med. 2018 Mar;15(3):334-345. doi: 10.1016/j.jsxm.2018.01.003. Epub 2018 Feb 1. PubMed 29396020 ↗
  • Sokolakis I, Hatzichristodoulou G. Clinical studies on low intensity extracorporeal shockwave therapy for erectile dysfunction: a systematic review and meta-analysis of randomised controlled trials. Int J Impot Res. 2019 May;31(3):177-194. doi: 10.1038/s41443-019-0117-z. Epub 2019 Jan 21. PubMed 30664671 ↗
  • Sokolakis I, Dimitriadis F, Teo P, Hatzichristodoulou G, Hatzichristou D, Giuliano F. The Basic Science Behind Low-Intensity Extracorporeal Shockwave Therapy for Erectile Dysfunction: A Systematic Scoping Review of Pre-Clinical Studies. J Sex Med. 2019 Feb;16(2):168-194. doi: 10.1016/j.jsxm.2018.12.016. PubMed 30770067 ↗
  • Rizk PJ, Krieger JR, Kohn TP, Pastuszak AW. Low-Intensity Shockwave Therapy for Erectile Dysfunction. Sex Med Rev. 2018 Oct;6(4):624-630. doi: 10.1016/j.sxmr.2018.01.002. Epub 2018 Mar 22. PubMed 29576441 ↗
  • Ruffo A, Capece M, Prezioso D, Romeo G, Illiano E, Romis L, Di Lauro G, Iacono F. Safety and efficacy of low intensity shockwave (LISW) treatment in patients with erectile dysfunction. Int Braz J Urol. 2015 Sep-Oct;41(5):967-74. doi: 10.1590/S1677-5538.IBJU.2014.0386. PubMed 26689523 ↗

Individual participant data

Plan to share: No — The research is from a small medical practice without the manpower, financial or technical support from a larger institution or industry to enter data into a data repository.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 19, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06600893
Lead sponsor
San Diego Sexual Medicine
Responsible party
Sponsor
First posted
Sep 19, 2024
Start date
Aug 5, 2019
Primary completion
Jun 22, 2022
Completion
Apr 7, 2023
Last update
Sep 19, 2024

Study contacts

Irwin Goldstein, MD
principal investigator · San Diego Sexual Medicine

Oversight

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

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