Platelet-rich Plasma (PRP) Injection for Treatment of Erectile Function

The Effect of Platelet-rich Plasma(PRP) Injection Treatment on Erectile Function: a Double-blind, Placebo Controlled Randomized Clinical Trial

The primary objective of the present study is to investigate and compare the treatment efficacy of PRP injection vs placebo treatment in men with mild-moderate vasculogenic ED, as measured by IIEF.The secondary objective of the present clinical trial is to study the adverse events and safety of the PRP injection treatment in vasculogenic ED patients

Study Overview

• Status: Completed
• Conditions: Erectile Dysfunction Due to Arterial Insufficiency
• Intervention / Treatment: Biological: Platelet-Rich Plasma (PRP); Biological: Normal saline injection

• Study Type: Interventional
• Enrollment (Actual): 60
• Phase: Phase 2; Phase 3

Contacts and Locations

Study Locations

• Greece
  • Thessaloniki, Greece, 54621
    • G.Gennimatas Hospital

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 40 years to 70 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: Male

Description

Inclusion Criteria:

1. Consent to participate.
2. Age 40-70 years.
3. Sexually active in a stable, heterosexual relationship of more than three months duration.
4. Presence of Erectile Dysfunction for at least 6 months.
5. IIEF-ED: 11-25 at visit 1
6. PDE5i users and report some/good response to PDE5i at the last month before screening.
7. Agree to suspend all ED therapy for the duration of the study.
8. Agree to attempt sexual intercourse at least 4 times every 4 weeks, for the duration of the study without being under the influence of alcohol or recreational drugs. Agree to document the outcome using the Sexual Encounter Profile (SEP) diary, as needed.

Exclusion Criteria:

1. Previous major pelvic surgery or pelvic trauma that could impact erectile function, such as radical prostatectomy, radical cystectomy, rectal surgery. Patients with previous TURP surgery without sequelae of iatrogenic ED, may be included.
2. Previous penile surgery of any kind except circumcision and condyloma removal, such as penile lengthening, penile cancer surgery, penile plication, grafting.
3. Previous history of priapism or penile fracture
4. Previous radiation therapy to pelvis.
5. Abnormal morning serum testosterone level defined as a value lower than 300 ng/dL +/- 5 %(indicative of untreated hypogonadism), or greater than 1197 ng/dL +/- 5%.
6. Current or previous hormone usage, other than prescribed testosterone, clomiphene or thyroid medication. Subjects with prior or current use of hormonal treatment for prostate cancer are also excluded.
7. Psychogenic ED.
8. Peyronie's Disease or penile curvature that negatively influences sexual activity.
9. Anatomical or neurological abnormalities in the treatment area.
10. Any untreated medical condition (medical history)
11. Patients with generalized polyneuropathy, or neurological conditions irrespective of cause, such as severe diabetes, multiple sclerosis or Parkinson's Disease.
12. Refusal to suspend ED therapy for duration of study. Subjects who are using Tadalafil as a treatment for BPH (Benign Prostatic Hyperplasia) will also be excluded.
13. Men deemed not healthy enough to participate in sexual activity.
14. Any condition or behavior that indicates to the Principal Investigator that the subject is unlikely to be compliant with study procedures and visits.
15. Any health history or laboratory result that indicates to the Principal Investigator that the subject has a significant medical condition and should not participate in the study.
16. History of consistent treatment failure with PDE5 inhibitors for therapy of ED.
17. Any history of significant psychiatric disease, such as bipolar disorder or psychosis, greater than one lifetime episode of major depression, current depression of moderate or greater severity. Patients who are currently using SSRI or psychotropic medications.
18. Partners who are < 18 years of age, who are nursing, who are known to be pregnant at screening, who wish to become pregnant during the study period, who have any gynecologic problems, sexual dysfunction, or major medical conditions that would limit participation in sexual intercourse.
19. Patients with any hematological disorder.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Double

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Placebo Comparator: Group B	Biological: Normal saline injection; All subjects of this group will receive 2 sessions of normal saline penile injection with 30 +/- 3 day treatment interval for all subjects, 10 ml of normal saline will be injected at each session.
Active Comparator: Group A	Biological: Platelet-Rich Plasma (PRP); All subjects of this group will receive 2 sessions of PRP penile injection with 30 +/- 3 day treatment interval, 10 ml of PRP will be injected at each session.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The % of patients in each group who attain Minimal Clinically Important Difference (MCID) in International Index of Erectile Function -Erectile Function (IIEF-EF) domain from baseline to 24 weeks after final treatment.	MCID is defined according to baseline ED severity as:Improvement by 5 or more in the EF domain score of the IIEF for patients with moderate ED at baseline and by 2 or more in the EF domain score of the IIEF for patients with moderate ED at baseline	at 24 weeks follow up visit

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The % of patients in each group who attain MCID in IIEF-EF domain from baseline to 12 weeks after final treatment.	MCID is defined according to baseline ED severity as:Improvement by 5 or more in the EF domain score of the IIEF for patients with moderate ED at baseline and by 2 or more in the EF domain score of the IIEF for patients with moderate ED at baseline	at 12 weeks follow up visit
The % of patients in each group who attain MCID in IIEF-EF domain from baseline to 4 weeks after final treatment.	MCID is defined according to baseline ED severity as:Improvement by 5 or more in the EF domain score of the IIEF for patients with moderate ED at baseline and by 2 or more in the EF domain score of the IIEF for patients with moderate ED at baseline	at 4 weeks follow up visit
The difference between the PRP group (2 sessions of PRP) and the placebo group in the change of the IIEF-ED score from baseline to 4 weeks after final treatment.	EF domain of the IIEF questionnaire will be completed. IIEF-EF consists of items 1,2,3,4,5,15 of the IIEF questionnaire.According to the score of the iIEF-EF there are five categories of erectile function: 1-10 (Severe Erectile Dysfunction), 11-16(Moderate dysfunction), 17-21(Mild to moderate dysfunction), 22-25(Mild dysfunction), 26-30 (No dysfunction).	baseline and 4 weeks follow up visit
The difference between the PRP group (2 sessions of PRP) and the placebo group in the change of the IIEF-ED score from baseline to 12 weeks after final treatment.	EF domain of the IIEF questionnaire will be completed.IIEF-EF consists of items 1,2,3,4,5,15 of the IIEF questionnaire.According to the score of the iIEF-EF there are five categories of erectile function: 1-10 (Severe Erectile Dysfunction), 11-16(Moderate dysfunction), 17-21(Mild to moderate dysfunction), 22-25(Mild dysfunction), 26-30 (No dysfunction)	baseline and 12 weeks follow up visit
The difference between the PRP group (2 sessions of PRP) and the placebo group in the change of the IIEF-ED score from baseline to 24 weeks after final treatment.	EF domain of the IIEF questionnaire will be completed.IIEF-EF consists of items 1,2,3,4,5,15 of the IIEF questionnaire.According to the score of the iIEF-EF there are five categories of erectile function: 1-10 (Severe Erectile Dysfunction), 11-16(Moderate dysfunction), 17-21(Mild to moderate dysfunction), 22-25(Mild dysfunction), 26-30 (No dysfunction)	baseline and 24 weeks follow up visit
The difference between the PRP group (2 sessions of PRP) and the placebo group in the change in Sexual Encounter Profile Question 3 (SEP3) score from baseline to 4 weeks after final treatment.	The percent of subjects who answer ''YES'' in question 3 of SEP questionnaire will be reported	baseline and 4 weeks follow up visit
The difference between the PRP group (2 sessions of PRP) and the placebo group in the change in Sexual Encounter Profile Question 3 (SEP3) score from baseline to 12 weeks after final treatment.	The percent of subjects who answer ''YES'' in question 3 of SEP questionnaire will be reported	baseline and 12 weeks follow up visit
The difference between the PRP group (2 sessions of PRP) and the placebo group in the change in Sexual Encounter Profile Question 3 (SEP3) score from baseline to 24 weeks after final treatment.	The percent of subjects who answer ''YES'' in question 3 of SEP questionnaire will be reported	baseline and 24 weeks follow up visit
The difference between the PRP group (2 sessions of PRP) and the placebo group in Erectile Dysfunction Inventory of Treatment Satisfaction (EDITS) questionnaire score	EDITS is an 11-item validated questionnaire assessing treatment satisfaction. The 11 items in the EDITS questionnaire are combined into an index score by computing the mean of the 11 item scores and multiplying this value by 25. This results in an EDITS index score with a range of 0 (extremely low treatment satisfaction) to 100 (extremely high treatment satisfaction) for an individual patient.	4,12, 24 weeks follow up visit
The difference between the PRP group (2 sessions of PRP) and the placebo group in the the Pain Visual Analogue Scale (VAS) after each injection treatment session	It will be assessed by the pain VAS, right after each LIST session. Pain VAS is a unidimensional measure of pain intensity . It is a continuous scale comprised of a horizontal (HVAS) or vertical (VVAS) line, usually 10 centimeters (100 mm) in length, anchored by 2 verbal descriptors, one for each symptom extreme. For pain intensity, the scale is most commonly anchored by "no pain" (score of 0) and "pain as bad as it could be" or "worst imaginable pain" (score of 100 [100-mm scale]. To avoid clustering of scores around a preferred numeric value, numbers or verbal descriptors at intermediate points are not recommended. The following cut points on the pain VAS have been recommended: no pain (0-4 mm), mild pain (5-44 mm), moderate pain (45-74 mm), and severe pain (75- 100 mm	at week 0 and 4
Number of patients with treatment related adverse events	Potential treatment related adverse events after the first PRP injection session and during the 3 month follow up period will be reported	28 weeks

Collaborators and Investigators

• Sponsor: Institute for the Study of Urological Diseases, Greece
• Collaborators: European Society for Sexual Medicine
• Investigators: Principal Investigator: Dimitrios Hatzichristou, Prof., G.Gennimatas General Hospital, Thessaloniki,Greece

Publications and helpful links

General Publications

• Epifanova MV, Gvasalia BR, Durashov MA, Artemenko SA. Platelet-Rich Plasma Therapy for Male Sexual Dysfunction: Myth or Reality? Sex Med Rev. 2020 Jan;8(1):106-113. doi: 10.1016/j.sxmr.2019.02.002. Epub 2019 Mar 19.
• Scott S, Roberts M, Chung E. Platelet-Rich Plasma and Treatment of Erectile Dysfunction: Critical Review of Literature and Global Trends in Platelet-Rich Plasma Clinics. Sex Med Rev. 2019 Apr;7(2):306-312. doi: 10.1016/j.sxmr.2018.12.006. Epub 2019 Mar 2.
• Wu YN, Wu CC, Sheu MT, Chen KC, Ho HO, Chiang HS. Optimization of platelet-rich plasma and its effects on the recovery of erectile function after bilateral cavernous nerve injury in a rat model. J Tissue Eng Regen Med. 2016 Oct;10(10):E294-E304. doi: 10.1002/term.1806. Epub 2013 Aug 16.

Study record dates

Study Major Dates

• Study Start (Actual): September 2, 2019
• Primary Completion (Actual): March 26, 2020
• Study Completion (Actual): September 24, 2020

Study Registration Dates

• First Submitted: August 6, 2019
• First Submitted That Met QC Criteria: August 6, 2019
• First Posted (Actual): August 8, 2019

Study Record Updates

• Last Update Posted (Actual): October 20, 2020
• Last Update Submitted That Met QC Criteria: October 19, 2020
• Last Verified: October 1, 2020

More Information

Terms related to this study

• Keywords: PRP; Platelet-Rich Plasma
• Additional Relevant MeSH Terms: Mental Disorders; Sexual Dysfunctions, Psychological; Sexual Dysfunction, Physiological; Erectile Dysfunction
• Other Study ID Numbers: 65-08/10/18

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: Undecided

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No