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Clinical Trial Summary

This randomized phase II trial studies how well giving sipuleucel-T with or without radiation therapy works in treating patients with hormone-resistant metastatic prostate cancer. Vaccines may help the body build an effective immune response to kill tumor cells. Radiation therapy uses high energy x rays to kill tumor cells. It is not yet known whether giving sipuleucel-T vaccine is more effective with or without radiation therapy in treating prostate cancer


Clinical Trial Description

PRIMARY OBJECTIVES:

I. To assess the feasibility, based on percent able or willing to receive all three infusions of sipuleucel-T immunotherapy, when combining sipuleucel-T with radiation therapy to a single site of metastasis delivered one week prior to beginning of sipuleucel-T therapy.

SECONDARY OBJECTIVES:

I. To assess the effect of radiation therapy to single metastasis on immune response (antibody and T-cell proliferation to prostate acid phosphate [PAP] and fusion protein PA2024) generated by sipuleucel-T immunotherapy.

II. To assess the effect of external beam radiotherapy to single metastasis on prostate specific antigen (PSA) response to therapy with sipuleucel-T.

III. To assess the effect of external beam radiotherapy to single metastasis on radiographic response rate to therapy with sipuleucel-T.

IV. To assess the time from the onset of therapy with sipuleucel-T +/- radiation to the need for subsequent therapy for prostate cancer.

V. To assess the toxicity associated with sipuleucel-T +/- radiation.

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM A: Patients receive sipuleucel-T intravenously (IV) over 60 minutes days 22, 36, and 50.

ARM B: Patients undergo external beam radiation therapy in weeks 1-2. Patients also receive sipuleucel-T as in Arm A.

In both arms, treatment continues in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up until week 60. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT01807065
Study type Interventional
Source City of Hope Medical Center
Contact
Status Completed
Phase Phase 2
Start date June 7, 2013
Completion date December 31, 2019

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