Conditions: Adenocarcinoma of the Prostate Stage IV Prostate Cancer
Keywords: prostate Cancer adenocarcinoma of the prostate stage IV prostate cancer newly diagnosed stage IV prostate cancer
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 55
Healthy volunteers: no

Brief summary:
This phase II trial is studying how well giving gossypol together with androgen ablation therapy works in treating patients with newly diagnosed metastatic prostate cancer. Gossypol may stop the growth of tumor cells by blocking blood flow to the tumor. Androgens can cause the growth of prostate tumor cells. Luteinizing hormone-releasing hormone agonists and drugs, such as bicalutamide, may lessen the amount of androgens made by the body. Giving gossypol together with androgen ablation therapy may be an effective treatment for prostate cancer

Detailed description:
PRIMARY OBJECTIVE:

I. To determine the percentage of patients with newly diagnosed metastatic prostate cancer who demonstrate undetectable prostate-specific antigen (PSA) (\< 0.2 ng/mL) at 7 months when treated with R-(-)-gossypol (AT-101) and androgen ablation therapy.

SECONDARY OBJECTIVES:

I. To determine the safety of this regimen in these patients. II. To determine the percentage of patients with PSA \>= 4.0 ng/mL, overall PSA \< 4.0 ng/mL, and a PSA \>= 0.2 ng/mL but \< 4.0 ng/mL during the first 7 months of therapy.

OUTLINE:

Patients receive R-(-)-gossypol orally (PO) once daily (QD) on days 1-21. Treatment repeats every 28 weeks for 8 courses in the absence of disease progression or unacceptable toxicity. Patients may receive bicalutamide PO QD beginning 6 weeks before the initiation of R-(-)-gossypol and continuing after completion of treatment, at the discretion of the treating physician.

Arms:
arm 1: Patients will receive Hormone therapy with at least one LHRH agent (Leuprolide Acetate or Goserelin) for 6 weeks and include bicalutamide. Patients will begin AT101 daily at 6 weeks for 3 weeks of every 4 weeks (4 weeks - 1 cycle) and continue for 8 cycles of combined therapy (combined AT101, and LHRH agonist). After 8 cycles patients will continue hormonal therapy.

Interventions: intervention 1: AT-101 intervention 2: Bicalutamide intervention 3: LHRH agent
Intervention descriptions: intervention 1: AT101 will be administered orally 20 mg/day for 21 days of a 28 day cycle. intervention 2: Daily bicalutamide 50 mg po is encouraged for the first month of LHRH agonist therapy to prevent a flare. Continued bicalutamide use is optional. Bicalutamide will be administered orally at a dose of 50 mg po daily, Day 1 to 28 of each cycle. intervention 3: An LHRH agonist(Leuprolide Acetate or Goserelin)can be administered at standard dosing appropriate to the agent used.

Protocol document: