Stem Cells for Erectile Dysfunction Post RALP

Recruiting now · Phase 1/Phase 2 · Has a placebo group

Conditions studied: Erectile Dysfunction, Prostate Cancer

In brief

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.

Key facts

Study ID

NCT07048314

Run by

The Methodist Hospital Research Institute

People needed

40

Starts

2026-07-07

Expected to finish

2027-06-30

Last updated by the study team

2026-07-10

Who can join

Age: 40 and older, up to 70. Sex: male. Healthy volunteers: not accepted.

You may qualify if…

• 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

You may not qualify if…

• 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 it is running

• Houston Methodist — Houston, Texas, United States (enrolling)

Full record on ClinicalTrials.gov

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