Surgery With or Without Docetaxel and Leuprolide or Goserelin in Treating Patients With High-Risk Localized Prostate Cancer
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|ClinicalTrials.gov Identifier: NCT00430183|
Recruitment Status : Active, not recruiting
First Posted : February 1, 2007
Last Update Posted : November 19, 2018
RATIONALE: Drugs used in chemotherapy, such as docetaxel, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. Androgens can cause the growth of prostate cancer cells. Antihormone therapy, such as goserelin and leuprolide, may stop the adrenal glands from making androgens. Giving docetaxel and leuprolide or goserelin before surgery may make the tumor smaller and reduce the amount of normal tissue that needs to be removed. It is not yet known whether giving docetaxel and leuprolide or goserelin before surgery is more effective than surgery alone in treating patients with prostate cancer.
PURPOSE: This randomized phase III trial is studying docetaxel and leuprolide or goserelin to see how well they work when given before surgery compared with surgery alone in treating patients with high-risk localized prostate cancer.
|Condition or disease||Intervention/treatment||Phase|
|Prostate Cancer||Drug: docetaxel Drug: LHRH agonist Procedure: surgery||Phase 3|
This randomized trial tests whether the addition of chemohormonal therapy improves PSA-progression free survival in patients with high risk, clinically-localized prostate cancer. The neoadjuvant approach is taken since there appears to be a higher acceptance rate in the prostate population for this type of therapy and several phase II trials have demonstrated its safety. Multiple chemotherapeutic therapies have shown efficacy in advanced prostate cancer and docetaxel has become the community standard. Many high risk patients are initiated on LHRH agonists at or near the time of diagnosis of their prostate cancer. In order to allow the inclusion of these patients in the protocol, enhanced enrollment and maintain compliance with therapy, up to 3 months of androgen deprivation therapy prior to enrollment will be permitted. This study will therefore be able to test the hypothesis that targeting both androgen-sensitive and chemotherapy- sensitive prostate cancer cells will improve outcomes in these high-risk patients.
OUTLINE: This is a multicenter, randomized study. Patients are stratified according to nomogram-predicted biochemical progression-free survival at 5 years (0-20.9% vs 21-39.9% vs 40-59.9% vs ≥ 60%) and androgen-deprivation therapy prior to randomization ≤ 4 months (no vs yes). Patients are randomized to 1 of 2 treatment arms. Please see the Arms sections for more details.
The primary and secondary objectives are described below.
- To determine whether treatment with neoadjuvant docetaxel and androgen deprivation therapy prior to radical prostatectomy will increase the rate of 3-year biochemical progression-free survival (bPFS) compared to treatment with immediate radical prostatectomy alone for high-risk prostate cancer patients.
- To compare the 5-year bPFS rate, bPFS, disease progression, disease-free survival, and overall survival of patients randomized to the two arms of this trial
- To determine the safety and tolerability of neoadjuvant docetaxel and androgen deprivation therapy prior to surgery for high-risk patients undergoing radical prostatectomy
- To compare the impact of neoadjuvant docetaxel and androgen deprivation therapy on time to clinically apparent local disease recurrence and metastatic disease in high-risk patients undergoing radical prostatectomy for clinically localized prostate cancer
- To compare the impact of neoadjuvant docetaxel and androgen deprivation therapy relative to RP on pathologic tumor stage, frequency of lymph node metastases and positive margin rates for high-risk patients undergoing radical prostatectomy for clinically localized prostate cancer
- To determine if changes in serum testosterone levels will predict bPFS
- To determine prospectively whether PSA doubling time (PSADT) is a surrogate endpoint for time to clinical metastases and overall survival
Patients are followed up to 15 years post-randomization.
|Study Type :||Interventional (Clinical Trial)|
|Actual Enrollment :||788 participants|
|Intervention Model:||Parallel Assignment|
|Masking:||None (Open Label)|
|Official Title:||A Randomized Phase III Study of Neo-Adjuvant Docetaxel and Androgen Deprivation Prior to Radical Prostatectomy Versus Immediate Radical Prostatectomy in Patients With High-Risk, Clinically Localized Prostate Cancer|
|Study Start Date :||December 2006|
|Actual Primary Completion Date :||October 2, 2018|
Experimental: Arm A: docetaxel + LHRH agonist + surgical intervention
Patients receive six cycles of docetaxel administered every 3 weeks combined with 18-24 weeks of androgen deprivation therapy. During each cycle of chemotherapy, all patients should undergo premedication with dexamethasone 8 mg orally prior to docetaxel. Dexamethasone may also be given intravenously according to institutional guidelines.
Patients will also receive androgen deprivation for 18-24 weeks of an LHRH agonist (eg, leuprolide acetate, goserelin acetate). Additional premedication and antiemetics may be given at the physician's discretion and as defined by the protocol.
Patients will undergo standard surgical intervention. The surgical procedures will be performed within 60 days of the completion of neoadjuvant therapy. Patients are allowed to receive adjuvant external beam radiation at the discretion of the treating physician and as defined per the protocol. It must be initiated within 6 months of the date of surgery.
75 mg/m^2 will be administered intravenously over one hour on Day 1 of each cycle, every 21 days
Drug: LHRH agonist
Patients undergo radical prostatectomy with staging pelvic lymphadenectomy.
Arm B: surgical intervention
All patients undergo standard surgical intervention. The surgical procedures will be performed within 60 days of randomization. Patients are allowed to receive adjuvant external beam radiation at the discretion of the treating physician and as defined per the protocol. Adjuvant radiation must be initiated within 6 months of the date of surgery.
Patients undergo radical prostatectomy with staging pelvic lymphadenectomy.
- 3-year biochemical progression-free survival (bPFS) rate [ Time Frame: 3 years ]
- 5-year bPFS rate and bPFS [ Time Frame: 5 years ]
- Time to clinical local recurrence (The time from randomization to the first biopsy-proven recurrence in the prostatic bed or new mass.) [ Time Frame: Up to 15 years post-randomization ]
- Time to metastatic disease progression (The date of randomization to date of evidence of systemic disease on bone scan or cross sectional imaging.) [ Time Frame: Up to 15 years post-randomization ]
- Unacceptable toxicity (grade 3 or higher toxicity) [ Time Frame: Up to 15 years post-randomization ]
- Prostate cancer-specific-free survival (The time from randomization to the time of death due to prostate cancer.) [ Time Frame: Up to 15 years post-randomization ]
- Disease progression [ Time Frame: Up to 15 years post-randomization ]
- Overall survival (The date of randomization to the time of death due to prostate cancer.) [ Time Frame: Up to 15 years post-randomization ]
To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00430183
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|Study Chair:||James Eastham, MD||Memorial Sloan Kettering Cancer Center|