NCT07048314 · The Methodist Hospital Research Institute
Stem Cells for Erectile Dysfunction Post RALP
What this study is about
This is a phase 1/2 single center, pilot study to assess safety and effectiveness of allogeneic adipose-derived mesenchymal stem cells (HB-adMSCs) and to evaluate the timing and combination effects of active treatment versus placebo in promoting the recovery of erectile function in patients undergoing radical retropubic prostatectomy (RALP) of localized prostate cancer.
View original scientific description
This is a phase 1/2 single center, pilot study to assess safety and efficacy of allogeneic adipose-derived mesenchymal stem cells (HB-adMSCs) and to evaluate the timing and combination effects of active treatment versus placebo in promoting the recovery of erectile function in patients undergoing radical retropubic prostatectomy (RALP) of localized prostate cancer.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Patients scheduled for RALP with Dr. B. Miles at Houston Methodist.
- Men aged between 40 and 70 (inclusive) years old
- Localized prostate cancer: Clinical stage T1-T2, N0, M0
- Gleason score \< 7
- Pre-op IIEF-5 \>20 (Appendix A)
- Testosterone serum: \> 300ng/dl with normal Free Testosterone
- Life expectancy of at least 10 years
- Performance status of ≤ 2 (Zubrod scale). (Appendix B)
- Patients must sign an informed consent indicating that they are aware of the investigational nature of the study, in keeping with the policies of the institution
- Patient is willing to attempt intercourse at least 5 times per month following urinary control after surgery
- Supportive partner willing to complete sexual survey questionnaire (Appendix D)
- PDE5 inhibitors like sildenafil, tadalafil, vardenafil and avanafil are permitted pre and post-surgery if participant was taking this for ED at least 6 months before surgery.
- Patient need cardiac clearance by the cardiologist
Exclusion criteria
- Penile anatomical abnormalities (Peyronie's disease)
- Hypogonadism
- Any medication used for androgen ablation (e.g., LHRH agonist or antagonist, anti-androgens, etc.)
- Patients with AST levels above 40U/L ; ALT levels above 33 U/L and Glucose levels above 180 mg/dl and psychiatric disorders that require medication
- Previous or current hormonal treatment, chemotherapy, radiation therapy, immunotherapy or another investigational drug.
- Any previous penile implant or penile vascular surgery
- Injections of Trimix (combination of alprostadil, papaverine and phentolamine) pre and post-surgery . \-
Where
- Houston, Texas
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 10, 2026 · Source of record for eligibility and locations