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Vaccine Therapy in Treating Patients With Metastatic Prostate Cancer

2014-08-27 03:58:26 | BioPortfolio

Summary

RATIONALE: Vaccines may make the body build an immune response to kill tumor cells.

PURPOSE: Phase I trial to study the effectiveness of vaccine therapy in treating patients with metastatic prostate cancer.

Description

OBJECTIVES: I. Assess the toxicity associated with repeated vaccination with recombinant vaccinia virus expressing prostate-specific antigen (rV-PSA) in patients with metastatic adenocarcinoma of the prostate. II. Determine the optimal dose of rV-PSA given at monthly intervals based on cellular and hormonal immunity. III. Determine whether vaccination with rV-PSA is associated with anti-tumor activity. IV. Determine whether granulocyte-macrophage colony-stimulating factor (GM-CSF) has an effect on cellular and humoral immunity different from rV-PSA, and whether the addition of GM-CSF has enhanced antitumor effect compared to rV-PSA alone.

OUTLINE: This is an open label, dose escalation study. Patients in cohorts of 3-6 receive 3 vaccinations with rV-PSA at 4-week intervals (days 1, 29, 57, and 85) in the absence of disease progression or unacceptable toxicity. Response assessment is performed at eight weeks. Patients who discontinue therapy prior to eight weeks are considered unevaluable for response. If dose limiting toxicity is observed in 2 of 6 patients entered at a dose level, no further patients are entered at that level and the MTD is defined as the preceding dose level. Ten additional patients are treated at the MTD and receive granulocyte-macrophage colony-stimulating factor (GM-CSF) administered subcutaneously on day -1 through day 2 of each cycle. Patients who are HLA-A2 positive, have received all 3 rV-PSA vaccinations without unacceptable toxicity, and have been off study for at least 30 days due to disease progression may continue treatment with rV-PSA at the highest dose level and the addition of GM-CSF. Patients are followed monthly for 6 months.

PROJECTED ACCRUAL: An estimated 16-46 patients will be accrued over 12-24 months.

Study Design

Primary Purpose: Treatment

Conditions

Prostate Cancer

Intervention

recombinant viral vaccine therapy, sargramostim

Location

Brigham and Women's Hospital
Boston
Massachusetts
United States
02115

Status

Completed

Source

National Cancer Institute (NCI)

Results (where available)

View Results

Links

Published on BioPortfolio: 2014-08-27T03:58:26-0400

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Medical and Biotech [MESH] Definitions

A glycoprotein that is a kallikrein-like serine proteinase and an esterase, produced by epithelial cells of both normal and malignant prostate tissue. It is an important marker for the diagnosis of prostate cancer.

Preliminary cancer therapy (chemotherapy, radiation therapy, hormone/endocrine therapy, immunotherapy, hyperthermia, etc.) that precedes a necessary second modality of treatment.

Any vaccine raised against any virus or viral derivative that causes hepatitis.

A synthetic retinoid that is used orally as a chemopreventive against prostate cancer and in women at risk of developing contralateral breast cancer. It is also effective as an antineoplastic agent.

Tissue ablation of the PROSTATE performed by ultrasound from a transducer placed in the RECTUM. The procedure is used to treat prostate cancer (PROSTATIC NEOPLASMS) and benign prostatic hypertrophy (PROSTATIC HYPERPLASIA).

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