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Platelet-Rich Plasma for Erectile Dysfunction After Radical Prostatectomy

2 de noviembre de 2026 actualizado por: Mikkel Fode, Herlev and Gentofte Hospital

Treatment of Erectile Dysfunction After Radical Prostatectomy With Platelet-Rich Plasma Injections: a Randomized Controlled Trial

This study will test whether injections of platelet-rich plasma (PRP) can improve erectile function in men with persistent erectile dysfunction (ED) at least 12 months after nerve-sparing radical prostatectomy for prostate cancer. Participants will be randomly assigned to receive either two PRP injections or two saline (placebo) injections into the penis, administered one month apart in a double-blind fashion. Erectile function will be assessed using the International Index of Erectile Function (IIEF) questionnaire at baseline and at 1, 3, 6, and 12 months after the last injection. The primary objective is to determine whether PRP improves the erectile function domain of the IIEF more than saline at one month after the last injection

Descripción general del estudio

Estado

Aún no reclutando

Condiciones

Intervención / Tratamiento

Descripción detallada

Erectile dysfunction is common after nerve-sparing radical prostatectomy and may persist despite recovery from the initial nerve injury. Platelet-rich plasma (PRP) is prepared from autologous blood and contains growth factors that may promote angiogenesis and tissue regeneration. Preclinical studies suggest that PRP may improve erectile function after cavernous nerve injury, but PRP remains an experimental treatment, and no published study has specifically evaluated its effect in men with erectile dysfunction following radical prostatectomy.

The hypothesis is that intracavernosal PRP injections improve erectile function more than saline injections in men with erectile dysfunction persisting 1-3 years after nerve-sparing radical prostatectomy.

Eligible participants will be stratified according to unilateral or bilateral nerve-sparing surgery and randomized 1:1 to receive two intracavernosal injections of either autologous PRP or saline, administered one month apart. An unblinded team member who has no direct interaction with participants will prepare the injections. The participant and the physician administering the injection will remain blinded to treatment allocation. Syringes will be covered with opaque material to maintain blinding.

Blood will be collected before each injection in all participants. For participants assigned to PRP, the blood will be used to prepare the treatment. For the first 10 participants assigned to saline, PRP will also be prepared and analysed to verify the platelet concentration achieved with the preparation procedure. Blood collected from the remaining participants assigned to saline will be discarded.

Participants must discontinue other treatments for erectile dysfunction for four weeks before baseline and until the assessment one month after the last injection. Thereafter, other treatments for erectile dysfunction will be permitted and recorded.

Erectile function and other study outcomes will be assessed at baseline and at 1, 3, 6, and 12 months after the last injection. The primary outcome is the between-group difference in change from baseline in the erectile function domain of the International Index of Erectile Function at one month after the last injection.

Tipo de estudio

Intervencionista

Inscripción (Estimado)

100

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

Ubicaciones de estudio

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

40 años a 75 años (Adulto, Adulto Mayor)

Acepta Voluntarios Saludables

No

Géneros elegibles para el estudio

Masculino

Descripción

Inclusion Criteria:

  • Age 40-75 years
  • Underwent unilateral or bilateral nerve-sparing radical prostatectomy between 1 and 3 years prior to the study
  • Good erectile function prior to surgery (IIEF-EF score ≥ 22)
  • Erectile dysfunction at inclusion with an IIEF-EF score < 22 without aids
  • Acceptance of a pause in other treatments for erectile dysfunction from 4 weeks before baseline (wash-out) until the 1-month follow-up after the last injection
  • In a stable relationship lasting at least 6 months with a desire for sexual activity
  • Able to understand and accept the study protocol

Exclusion Criteria:

  • Known psychiatric, neurological and/or endocrinological disease requiring medication (including hypogonadism with total testosterone <12 nmol/l).
  • Severe urinary incontinence preventing sexual activity (assessed by a physician at inclusion)
  • Clinical or biochemical recurrence of prostate cancer
  • Other surgery or radiation therapy in the pelvic region
  • Severe cardiac disease in the form of unstable angina, NYHA class >II heart failure, uncontrolled arrhythmia, or severe symptomatic and/or significant valvular disease
  • Use of anti-androgen medication
  • Peyronie's disease and/or previous episodes of priapism
  • Excessive alcohol consumption (more than 21 units per week)

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Doble

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: Platelet Rich Plasma (PRP)

A volume of 5 mL PRP will be administered in corpus cavernosum on two occasions, with a 1-month interval between injections

A volume of 5 mL PRP will be administered in corpus cavernosum on two occasions, with a 1-month interval between injections

Otros nombres:
  • PPR
  • Plasma rico en plaquetas
Otro: Saline Solution (Placebo)

A volume of 5 mL saline solution will be administered in corpus cavernosum on two occasions, with a 1-month interval between injections.

A volume of 5 mL saline solution will be administered in corpus cavernosum on two occasions, with a 1-month interval between injections.

Otros nombres:
  • Placebo

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change in IIEF-EF score from baseline to 1 month after the final treatment session
Periodo de tiempo: From baseline to 1 month post the last intervention

Change in the erectile function (EF) domain score of the International Index of Erectile Function (IIEF) from baseline to 1 month after the final treatment session. The change in IIEF-EF score will be compared between the PRP and saline groups using an intention-to-treat analysis.

From baseline to 1 month post the last intervention

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change in IIEF-EF score at 1 month after the final treatment session - per-protocol analysis
Periodo de tiempo: From baseline to 1 month post the last intervention

Change in the erectile function (EF) domain score of the International Index of Erectile Function (IIEF) from baseline to 1 month after the final treatment session. The change in IIEF-EF score will be compared between the PRP and saline groups using a per-protocol analysis.

From baseline to 1 month post the last intervention
Change in IIEF-EF score at 3, 6, and 12 months after the final treatment session
Periodo de tiempo: From baseline to 12 months post the last intervention

Change in the erectile function (EF) domain score of the International Index of Erectile Function (IIEF) from baseline to 3, 6, and 12 months after the final treatment session. Analyses will be performed using both intention-to-treat and per-protocol populations, comparing the PRP and saline groups.

From baseline to 12 months post the last intervention
Analyses of participants achieving a clinically significant improvement in IIEF-EF score at 1, 3, 6, and 12 months
Periodo de tiempo: From baseline to 12 months post the last intervention

Intention-to-treat and per-protocol analyses of the proportion of participants achieving clinically significant improvements in IIEF-EF at 1, 3, 6, and 12 months following the final treatment session with PRP or saline. Clinically significant improvement is defined according to Rosen et al. as an increase of 2 points for mild ED, 5 points for moderate ED, and 7 points for severe ED

From baseline to 12 months post the last intervention
Change in IIEF domain scores at 1, 3, 6, and 12 months
Periodo de tiempo: From baseline to 12 months post the last intervention

Changes in the remaining domains of the International Index of Erectile Function (IIEF): orgasmic function, sexual desire, intercourse satisfaction, and overall satisfaction. As no minimum clinically important difference has been established for these domains, changes in domain scores will be analysed as continuous variables and compared between the PRP and saline groups.

From baseline to 12 months post the last intervention
Participant satisfaction after treatment
Periodo de tiempo: From baseline to 12 months post last intervention

Subjective participant satisfaction following treatment, assessed using the Global Satisfaction Question. This analysis will be performed according to the intention-to-treat principle.

From baseline to 12 months post last intervention
Use of additional treatments for erectile dysfunction
Periodo de tiempo: Until 12 months post last intervention.

Use of additional treatments for erectile dysfunction during the study period, including oral medication, intraurethral treatment, intracavernosal injections, vacuum erection devices, and penile implants. The use of additional treatments will be compared between the PRP and saline groups.

Until 12 months post last intervention.
Treatment effect according to baseline severity of erectile dysfunction, evaluated by the International Index of Erectile Function-Erectile Function (IIEF-EF)
Periodo de tiempo: From baseline to 12 months post last intervention

Subgroup analyses of treatment effects according to severity of erectile dysfunction at baseline (International Index of Erectile Function-Erectile Function (IIEF-EF), recorded just before the first injection). These analyses will be considered exploratory and hypothesis-generating.

From baseline to 12 months post last intervention
Adverse events following treatment
Periodo de tiempo: From baseline to 12 months post last intervention

Incidence and type of adverse events following PRP and saline injections during the study period. All adverse events will be recorded and described in the final study manuscript.

From baseline to 12 months post last intervention

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Investigadores

  • Investigador principal: Mikkel Fode, MD, PhD, Herlev and Gentofte Hospital

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Estimado)

15 de octubre de 2026

Finalización primaria (Estimado)

1 de agosto de 2028

Finalización del estudio (Estimado)

1 de noviembre de 2029

Fechas de registro del estudio

Enviado por primera vez

2 de octubre de 2026

Primero enviado que cumplió con los criterios de control de calidad

2 de octubre de 2026

Publicado por primera vez (Actual)

7 de octubre de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

3 de noviembre de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

2 de noviembre de 2026

Última verificación

1 de noviembre de 2026

Más información

Términos relacionados con este estudio

Otros números de identificación del estudio

  • H-25034065

Plan de datos de participantes individuales (IPD)

¿Planea compartir datos de participantes individuales (IPD)?

NO

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .