Prostate Cancer Clinical Trial
RAD001 and Bicalutamide for Androgen Independent Prostate Cancer
Summary
In the treatment of castration-resistant prostate cancer (CRPC), therapies will long response durations remain elusive as a result of the inherent ability of prostate cancer cells to develop iterative resistance. The goal of this study is to learn if the study drug RAD001 together with Bicalutamide can slow the growth of prostate cancer. The safety of the combination will also be studied.
Full Description
Bicalutamide, an androgen receptor (AR) antagonist, is frequently used as the first 'secondary hormonal therapy' in combination with another established agent (LHRH: luteinizing hormone-releasing hormone agonist/antagonist) to treat CRPC. A series of studies have shown that RAD001 through inhibition of mammalian target of rapamycin (mTOR) pathway has antitumor and anti-angiogenic activities. The hypothesis is that the combination of an antiandrogen and mTOR inhibitor would have additive and clinically significant effects in CRPC.
STATISTICAL CONSIDERATIONS:
The regimen will be considered promising if the rate of response/favorable outcome is 40% or greater. A rate of 20% (similar to that observed for bicalutamide alone) will not be considered worthy of further study. 38 patients (of whom 36 are assumed to be eligible) will be accrued to the study. If 11 or more patients have a favorable outcome (stable disease > 6 months or response), the combination will be considered worthy of further study. Given this design, there is a 9% probability of declaring the combination effective if the true favorable outcome rate is 20% and a 91% probability of declaring the combination effective if the true favorable outcome rate is 40%.
Eligibility Criteria
Inclusion Criteria:
18 years of age or older
Histologically documented prostate cancer
Castration resistant prostate cancer defined as two rising PSAs on castration therapy
Baseline PSA of 2ns/mL or greater
Testosterone of 50ng/mL or less
Patients on LHRH agonist/antagonist must continue therapy at the recommended dosing intervals
Prior bicalutamide is allowed as long as treatment was for 6 months or longer
Metastatic disease is not required
Minimum of four weeks since any major surgery, completion of radiation, or completion of all prior systemic anticancer therapy
ECOG Performance Status equal to or less than 2
Adequate bone marrow and liver function as outlined by parameters in the protocol
Exclusion Criteria:
Prior treatment with any investigational drug within the preceding 4 weeks
Prior treatment with an mTOR inhibitor
Fasting lipids over the parameters outlined in the protocol
Chronic treatment with systemic steroids or another immunosuppressive agent
Patients should not receive immunization with attenuated live vaccines during study period or within one week of study entry
Uncontrolled brain or leptomeningeal metastases, including patients who continue to require glucocorticoids for brain or leptomeningeal metastases
Other malignancies within the past 3 years except for adequately treated or basal squamous cell carcinomas of the skin
Patients who have any severe and/or uncontrolled medical conditions or other conditions that could affect their participation in the study
Known history of HIV seropositivity
Impairment of gastrointestinal function or gastrointestinal disease that may significantly alter the absorption of RAD001
Patients with an active, bleeding diathesis or on oral anti-vitamin K medication (except low dose coumarin)
Men able to conceive and unwilling to practice an effective method of birth control
Known hypersensitivity to RAD001 or other rapamycins or to its excipients
History of noncompliance to medical regimens
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There is 1 Location for this study
Boston Massachusetts, 02115, United States
Boston Massachusetts, 02115, United States
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