Spots Global Cancer Trial Database for GM-CSF in Treating Patients With Relapsed Prostate Cancer

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Trial Identification

Brief Title: GM-CSF in Treating Patients With Relapsed Prostate Cancer

Official Title: Immunologic Effects of GM-CSF (Sargramostim, Leukine®) in Patients With Biochemically-relapsed Prostate Cancer

Study ID: NCT00908141

Conditions

Prostate Cancer

Interventions

sargramostim

Study Description

Brief Summary: RATIONALE: Colony stimulating factors, such as GM CSF, may increase the number of immune cells found in bone marrow or peripheral blood. It is not yet known which GM-CSF regimen is more effective in treating patients with prostate cancer. PURPOSE: This randomized phase II trial is studying how well GM-CSF works in treating patients with relapsed prostate cancer.

Detailed Description: OBJECTIVES: Primary * To determine the ability of sargramostim (GM-CSF) to increase the number and activation of dendritic cells (DC) in patients with biochemically relapsed prostate cancer. Secondary * To determine the effect of administration schedule and hormonal state on sargramostim-induced DC number and activation in these patients. * To correlate the effects of sargramostim on DC number and activation with effects on prostate-specific antigen (PSA) modulation. * To determine whether sargramostim administration generates antiprostate cancer immune responses in these patients. OUTLINE: Patients are stratified according to hormonal status (androgen-dependent vs androgen-independent). Patients are then randomized to 1 of 2 treatment arms. * Arm I: Patients receive sargramostim (GM-CSF) subcutaneously (SC) on days 1-14. Treatment repeats every 28 days for 6 courses in the absence of disease progression or unacceptable toxicity. * Arm II: Patients receive GM-CSF SC three times weekly for 4 weeks. Treatment repeats every 28 days for 6 courses in the absence of disease progression or unacceptable toxicity. Patients undergo blood sample collection periodically for correlative studies. Samples are analyzed for dendritic cell (DC) number by flow cytometry, DC activation by quantitative real-time polymerase chain reaction (QRT-PCR), and immunity by serological analysis of recombinant cDNA expression libraries (SEREX).