- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00175383
Long Acting LHRH Versus Short Acting LHRH in the Treatment of Prostate Cancer
A Randomized Trial of Short Versus Long Acting LHRH Agonist Preparation Prior to Transperineal Implantation of the Prostate
Brachytherapy, or Transperineal implantation of the prostate (TPIP), is a recognized form of treatment for localized cancer of the prostate. TPIP has been used at the British Columbia Cancer Agency (BCCA) since 1998. As part of the treatment, some patients also require hormone therapy for 6 months. This is given as injections of a drug called an LHRH agonist. The LHRH agonist is made either as short-acting (1-month) or long-acting (3 month) injections. The LHRH agonist lowers testosterone levels, which helps make delivery of TPIP easier, and more effective.
There are specific guidelines regarding the use of LHRH agonist treatment with brachytherapy, however there is no policy whether short-acting or long-acting LHRH agonists should be used.
Analysis of results from BC has shown that there seems to be a delay in the time in which testosterone levels return to normal in men who receive the long-acting LHRH agonist compared with the short-acting LHRH agonist, however this is not known for sure.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
The suppression of testosterone to castrate levels has a definite advantage in terms of prostate volume downsizing, disease control and ease of Brachytherapy, in this patient population. The improved potency preservation rate seen with brachytherapy, when compared to other treatments such as radical prostatectomy or external beam, may be an important determinant in the patient's choice of treatment modality. Hence, testosterone recovery should be an important endpoint to consider in this patient population since prolongation of testosterone suppression may also delay the return of erectile function.
In order to compare the impact of LHRH agonist preparations on the rate of testosterone recovery, we propose a randomized clinical trial using one versus three-month Leuprolide preparations in patients otherwise suitable for our Brachytherapy Program.
The primary objective of this study is the median time to testosterone recovery in patients receiving 6 X 1-month or 2 X 3-month LHrH preparations and TPIP as radical treatment for limited stage prostate cancer.
In this context, testosterone recovery is defined as the return to the lower limit of normal for the patient's age group as well as return to pre treatment levels.
Analysis will mainly focus on time to testosterone recovery as defined by return to the lower limit of normal for the patient's age group as well as return to pre treatment levels. The lower limits of normal are defined as 5.8nmol/L and 5.5nmol/L for < 50 and > 50 years old
Changes in PSA level, QOL and erectile function will also be recorded
Study Type
Enrollment (Anticipated)
Phase
- Phase 3
Contacts and Locations
Study Contact
- Name: Shelley Hordiyuk, BSc., MBA
- Phone Number: 250-519-5512
- Email: SHordiyu@bccancer.bc.ca
Study Locations
-
-
British Columbia
-
Victoria, British Columbia, Canada, V8R 6V5
- Recruiting
- BC Cancer Agency - Vancouver Island Centre
-
Contact:
- Shelley Hordiyuk, BSc., MBA
- Phone Number: 250-519-5512
-
Principal Investigator:
- Howard Pai
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
- Child
- Adult
- Older Adult
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
All patients who elect to undergo brachytherapy for the treatment of adenocarcinoma of the prostate and who are otherwise recommended treatment with LHRH agonist. All patients must have a confirmed histological diagnosis of adenocarcinoma of the prostate and elect to be treated with transperineal implantation of the prostate.
Eligible patients will have confirmed clinical stage T1 or T2 (UICC 1997 staging system) with
- PSA > 10 but < 15 and Gleason score < 7, OR
- PSA < 10 and Gleason score = 7 OR
- Prostate volume > 50cc as measured on trans rectal ultrasound
While criteria 1 and 2 are mutually exclusive, criteria 3 can be present alone or in combination with criteria 1 OR 2.
Otherwise patients should be able to give informed consent and have a life expectancy. 2 years.
Exclusion Criteria:
-
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Leuprolide preparations
One versus three-month Leuprolide preparations in patients otherwise suitable for our Brachytherapy Program
|
See Detailed Description.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
The primary objective of this study is the median time to testosterone recovery in patients receiving 6 X 1-month or 2 X 3-month LHrH preparations and TPIP as radical treatment for limited stage prostate cancer.
Time Frame: 6 months
|
6 months
|
In this context, testosterone recovery is defined as the return to the lower limit of normal for the patient's age group as well as return to pre treatment levels.
|
Secondary Outcome Measures
Outcome Measure |
---|
PSA profile, quality of life, sexual function
|
Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Dr. Eric Berthelet, MD, The University of British Columbia
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- R03-1213
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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