Recurrent Prostate Cancer Clinical Trial
Official title:
Phase II Trial of GW572016 in Patients With Recurrent Prostate Cancer as Evident by a Rising PSA
This phase II trial studies how well lapatinib ditosylate works in treating patients with a rising prostate-specific antigen (PSA), a protein made by the prostate gland, indicating that prostate cancer has come back after previous treatment. Lapatinib ditosylate may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth and may delay or prevent the progression of prostate cancer.
PRIMARY OBJECTIVES:
I. To evaluate the percentage of patients with hormone sensitive prostate cancer who
experience > 50% decline in serum PSA during treatment with GW572016 (lapatinib ditosylate).
SECONDARY OBJECTIVES:
I. To evaluate the duration of PSA decline. II. To characterize the change in PSA slope with
GW572016. III. To characterize the safety and tolerability of GW572016 in this patient
population.
IV. To estimate the time to progression (TTP) and progression-free survival at 2 years (from
start of therapy).
V. To evaluate the correlation of epidermal growth factor receptor (EGFR)
expression/signaling (from available prostate biopsy specimens or prostatectomy blocks) and
its relationship to change in PSA in patients treated with GW572016.
OUTLINE:
Patients receive lapatinib ditosylate orally (PO) daily on days 1-28. Courses repeat every
28 days in the absence of disease progression or unacceptable toxicity.
After completion of study treatment, patients are followed up every 3 months if patient is <
2 years from study entry, every 6 months if patient is 2-5 years from study entry, or every
year if patient is 5-10 years from study entry for 10 years.
;
Endpoint Classification: Efficacy Study, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
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