PRP Exosomes Therapy for Erectile Dysfunction

NCT07124871 | Recruiting Phase 2

• 1 other identifier: PRP-DET:7/3/25
• Study Type: interventional
• Target: 30
• Locations: 1 country
• Sites: 1

Brief Summary

It will be a Single-arm, single-center, feasibility clinical trial with Primary Objective to investigate the treatment efficacy of PRP-derived exosomes injection in men with mild-moderate vasculogenic ED, as measured by the International Index of Erectile Function (IIEF). Also secondary objectives will be to study the adverse events and safety of the PRP-derived exosomes injection treatment in vasculogenic ED patients Study Centers The study will be carried out at Saint Lucas Hospital, Thessaloniki, Greece. Laboratory tests of all patients will be performed at the hospital's microbiology laboratory. PRP-derived exosomes preparation and application will take place at the Regenerative Clinic.

Conditions

Erectile Dysfunction Due to Arterial Insufficiency

Outcome Measures

Primary Outcomes (1)

• The % of patients in each group who attain Minimal Clinically Important Difference (MCID) in the International Index for Erectile Function- Erectile Function (IIEF-EF) domain

  The IIEF classifies the severity of ED into five categories stratified by score: No ED: 26-30, Mild ED: 22-25, Mild to moderate ED: 17-21, Moderate ED: 11-16 and Severe ED: 6-10. MCID values for the IIEF-EF (Erectile Function) domain are 2-point increase for mild ED, a 5-point increase for moderate ED and a 7-point increase for severe ED In IIEF-EF score higher values mean better outcome

  From baseline to 12 weeks after final treatment

Secondary Outcomes (3)

• The % of patients who attain Minimal Clinically Important Difference(MCID) in the International Index for Erectile Function- Erectile Function (IIEF-EF) domain .

  From baseline to 4 weeks after final treatment

• The change of the International Index for Erectile Function- Erectile Function (IIEF-EF) domain from baseline to 12 weeks after final treatment.

  From baseline to 12 weeks after final treatment.

• Adverse events in all patients

  Periprocedural

Study Arms (1)

Study Arm

EXPERIMENTAL

All patients will be regular PDE5I users/responders. After one one-month washout period, ED patients will be screened by the IIEF-EF domain, and 30 eligible patients will be enrolled. subjects will receive three sessions of PRP-derived exosomes injection with 21± 3 days treatment interval.

Biological: PRP-derived exosomes injection

Interventions

PRP-derived exosomes injection BIOLOGICAL

All subjects will receive three sessions of PRP-derived exosomes injection with 21± 3 days treatment interval.The patient will be positioned supine. A ¼-inch Penrose drain will be used as a tourniquet by placing it at the base of the penis and maintaining it in place under tension by a sterile clamp. We will obtain 10 mL of PRP per patient, but one of them will be used for platelet cell count analysis. A total 9 mL of the PRP-derived exosomes will be infused steadily over a 2 minutes period - 4.5 mL each into the right and left corpus cavernosum. The infusion will be performed at this slow speed - each side over 2 minutes of infusion - to minimize injury to the exosomes and cells. Following administration, compression of the penis will be achieved with a clenched fist for 20 minutes. At 20 minutes, the tourniquet will be removed, and a compressive dressing will be placed around the penile shaft. The patient will be instructed to remove the compression bandage in 4 hours

Study Arm

Eligibility Criteria

• Age: 40 Years - 70 Years
• Sex: male
• Healthy Volunteers: No
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Consent to participate.
• Age 40-70 years.
• Sexually active in a stable, heterosexual relationship of more than three months duration.
• Presence of ED for at least 6 months.
• IIEF-ED: 17-25 at visit 2. The IIEF classifies the severity of ED into five categories stratified by score: No ED: 26-30, Mild ED: 22-25, Mild to moderate ED: 17-21, Moderate ED: 11-16 and Severe ED: 6-10.
• Patients will be PDE5i users for at least 6 months and report some/good response to PDE5i in the last month before screening (at visit 1
• Agree to suspend all ED therapy for the duration of the study.
• Agree to attempt sexual intercourse at least 4 times every 3 weeks for the duration of the study without being under the influence of alcohol or recreational drugs.
• Agree to document the outcome using IIEF questionnaire during every visit and the Sexual Encounter Profile (SEP) diary, as needed (months 1 and 3 post treatment).

You may not qualify if:

• Previous major pelvic surgery or pelvic trauma that could impact EF, such as radical prostatectomy, radical cystectomy, or rectal surgery. 19
• Patients with previous transurethral resection of the prostate (TURP) surgery without sequelae of iatrogenic ED may be included.
• Previous penile surgery of any kind except circumcision and condyloma removal, such as penile lengthening, penile cancer surgery, penile plication, and grafting.
• Previous history of priapism or penile fracture
• Previous radiation therapy to the pelvis.
• Abnormal morning serum testosterone level, defined as a value lower than 300 ng/dL (indicative of untreated hypogonadism) or greater than1197 ng/dL.
• Current or previous hormone use, other than prescribed testosterone, clomiphene or thyroid medication. Subjects with prior or current use of hormonal treatment for prostate cancer are also excluded.
• Psychogenic ED.
• Peyronie's Disease or penile curvature that negatively influences sexual activity.
• Anatomical or neurological abnormalities in the treatment area.
• Any untreated medical condition (based on medical history)
• Patients with generalized polyneuropathy or neurological conditions irrespective of cause, such as severe diabetes, multiple sclerosis, or Parkinson's Disease.
• Refusal to suspend ED therapy for the duration of the study. Subjects who are using Tadalafil as a treatment for benign prostatic hyperplasia (BPH) will also be excluded.
• Men deemed not healthy enough to participate in sexual activity.
• Any condition or behavior that indicates to the Principal Investigator that the subject is unlikely to be compliant with study procedures and visits.

Sponsors & Collaborators

• Institute for the Study of Urological Diseases, Greece: lead

Study Sites (1)

St Lukes Hospital

Thessaloniki, 54636, Greece

RECRUITING

Related Publications (1)

• Colombo M, Raposo G, Thery C. Biogenesis, secretion, and intercellular interactions of exosomes and other extracellular vesicles. Annu Rev Cell Dev Biol. 2014;30:255-89. doi: 10.1146/annurev-cellbio-101512-122326. Epub 2014 Aug 21.

  PMID: 25288114 BACKGROUND

Central Study Contacts

Dimitrios Hatzichristou, Professor

CONTACT

+306944541516; d.hatzichristou@gmail.com

Study Design

• Study Type: interventional
• Phase: phase 2
• Allocation: NA
• Masking: NONE
• Purpose: TREATMENT
• Intervention Model: SINGLE GROUP
• Sponsor Type: OTHER
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: April 27, 2025
• First Posted: August 15, 2025
• Study Start: June 20, 2025
• Primary Completion: February 1, 2026
• Study Completion: May 1, 2026
• Last Updated: August 15, 2025

Record last verified: 2025-08

Data Sharing

• IPD Sharing: Will not share

Locations

GR (1)