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Spots Global Cancer Trial Database for Botulinum Toxin Injection With Prostate Brachytherapy

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Trial Identification

Brief Title: Botulinum Toxin Injection With Prostate Brachytherapy

Official Title: Botulinum Toxin Injection With Prostate Brachytherapy: A Randomized, Placebo-controlled Study Monitoring Urinary Symptoms and PSA

Study ID: NCT00681148

Study Description

Brief Summary: The purpose of this study is to see if botox injection into the prostate during seed implantation (brachytherapy) for prostate cancer a) improves urinary symptoms or avoids need for urinary tract instrumentation over the 6-8 month post-operative period when one wants to avoid manipulating the radioactive seeds, and b) speeds up the drop in PSA. Patients will be randomized to botox vs saline injection, at the completion of the seed implantation procedure.

Detailed Description: Brachytherapy is a popular treatment modality for localized prostate cancer, where radioactive seeds are implanted through 18 gauge needles into the prostate via a perineal template with rectal ultrasound guidance. The radioactivity is delivered over several months, depending on the isotope used. During this time, there can be exacerbation of urinary voiding symptoms from early edema of the prostate gland due to the implantation procedure, then later from the inflammatory reaction of the radiation. Because the initial acute inflammation may persist for many months despite steadily declining doses of radiation, attempts are made to minimize urinary symptoms prior to brachytherapy with pharmacologic therapy (alpha-blockers) or minimally invasive surgical therapy (transurethral incision or limited transurethral resection to avoid significant distortion of the prostate parenchyma for future seed implantation). Even with these precautions, around 30-40% of brachytherapy patients will still develop voiding symptoms. With such bothersome symptoms, intervention is deferred for at least 8-10 months to avoid distorting the planned field of radiation. Once symptoms develop, various additional pharmacologic measures are employed, such as increased doses of alpha-blockers, medrol steroid taper, and non-steroidal anti-inflammatory agents. Some patients require intermittent self-catheterization or suprapubic catheter for urinary diversion. Botulinum toxin has been used for cosmetic uses, and has been successfully used for treatment of overactive bladder, external sphincter dyssynergia, and benign prostatic hyperplasia (BPH). The studies with BPH show reduction in symptoms scores, PSA, and prostate volume, the latter from atrophy due to the denervation effect. The response lasts for 6-9 months. We propose to study botox intraprostatic injection during brachytherapy to see whether this improves urinary symptoms or avoids need for urinary tract instrumentation over this 6-8 month post-operative period when one wants to avoid manipulating the radioactive seeds. We will also monitor PSA, and see if there is any measurable augmentation of PSA decline with botox + Brachytherapy vs Brachytherapy alone. We will randomize patients to botox (100 units for \< 30 cc prostate; 200 units for \> 30 cc prostate) vs saline injection, administering 2 transperineal injections into both lateral lobes of the prostate (25-50 mg per injection), just 5-10 mm proximal to the bladder neck. Study design: N= 60 (30 receive Botox, 30 receive saline) Followup: AUA Symptoms scores weekly for 4 weeks, monthly thereafter Medications for urinary symptoms Need for catheterization PSA checked at 1 mo, 3 mo, 6 mo, 9 mo, 1 year, 15 mo, 18 mo, 24 mo

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: MALE

Healthy Volunteers: No

Locations

Emory Clinic, Emory University Hospital, Atlanta, Georgia, United States

Contact Details

Name: Peter T Nieh, MD

Affiliation: Emory University SOM

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

Google Search Results

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