Features | Partner Sites | Information | LinkXpress
Sign In
GLOBETECH PUBLISHING LLC
GLOBETECH PUBLISHING LLC
GLOBETECH MEDIA

Vaccine Application Extends Life of Metastatic Prostate Cancer Patients

By BiotechDaily International staff writers
Posted on 24 Feb 2010
In a newly published clinical trial, patients with metastatic prostate cancer who received a vaccine of harmless poxviruses engineered to trigger an immune system attack on prostate tumor cells lived considerably longer than patients who received a placebo vaccine.

The study's findings were published by the Journal of Clinical Oncology on its website in January 2010, and scheduled for later print publication. The randomized phase II study was performed by researchers from the Dana-Farber Cancer Institute (Boston, MA, USA) and affiliated organizations. The study involved the PROSTVAC-VF vaccine, a combination of two weakened poxviruses that have been genetically programmed to produce slightly irregular versions of prostate specific antigen (PSA)--a protein on the surface of prostate cells that is abnormal in many prostate cancers--and three costimulatory molecules that spur the immune system to a more vigorous attack on tumor cells.

The double-blinded trial included 125 patients with metastatic prostate cancer who did not respond to standard, hormone-lowering therapy. Eighty-two of the participants received the vaccine, produced by BN ImmunoTherapeutics, Inc. (Mountain View, CA, USA), and 40 received a placebo.

At the three-year point after the study, 30% of the PROSTVAC-VF patients were alive, versus 17% of the control group. The median survival of the vaccine group was 24.5 months, compared to 16 months for the control group, an 8.5-month increase.

Patients tolerated the vaccine well; only a small number experienced side effects such as fatigue, fevers, and nausea. "Although this study is relatively small, it offers encouraging evidence of a clinically meaningful benefit from this vaccine approach,” said lead investigator and lead author Philip Kantoff, M.D., of Dana-Farber, who helped design the trial.

Investigators are now planning a phase III trial that will enroll about 600 patients to evaluate further the vaccine's effectiveness.

Related Links:

Dana-Farber Cancer Institute
BN ImmunoTherapeutics



Channels

Genomics/Proteomics

view channel
Image: Pulsed near infrared light (shown in red) is shone onto a tumor (shown in white) that is encased in blood vessels. The tumor is imaged by photoacoustic tomography via the ultrasound emission (shown in blue) from the gold nanotubes (Photo courtesy of Jing Claussen (iThera Medical, Germany)).

Gold Nanotubes Are Novel Agents for Cancer Diagnosis and Treatment

Cancer researchers have produced a highly defined class of gold nanotubes that are suitable for use in animals as in vivo imaging nanoprobes, photothermal conversion agents, and drug delivery vehicles.... Read more

Drug Discovery

view channel
Image: Molecular model of the protein Saposin C (Photo courtesy of Wikimedia Commons).

Nanovesicles Kill Human Lung Cancer Cells in Culture and in a Mouse Xenograft Model

Nanovesicles assembled from the protein Saposin C (SapC) and the phospholipid dioleoylphosphatidylserine (DOPS) were shown to be potent inhibitors of lung cancer cells in culture and in a mouse xenograft model.... Read more

Biochemistry

view channel

Possible New Target Found for Treating Brain Inflammation

Scientists have identified an enzyme that produces a class of inflammatory lipid molecules in the brain. Abnormally high levels of these molecules appear to cause a rare inherited eurodegenerative disorder, and that disorder now may be treatable if researchers can develop suitable drug candidates that suppress this enzyme.... Read more

Lab Technologies

view channel
Image: The FLUOVIEW FVMPE-RS Gantry microscope (Photo courtesy of Olympus).

New Multiphoton Laser Scanning Microscope Configurations Expand Research Potential

Two new configurations of a state-of-the-art multiphoton laser scanning microscope extend the usefulness of the instrument for examining rapidly occurring biological events and for obtaining images from... Read more

Business

view channel

Roche Acquires Signature Diagnostics to Advance Translational Research

Roche (Basel, Switzerland) will advance translational research for next generation sequencing (NGS) diagnostics by leveraging the unique expertise of Signature Diagnostics AG (Potsdam, Germany) in biobanks and development of novel NGS diagnostic assays. Signature Diagnostics is a privately held translational oncology... Read more
 
Copyright © 2000-2015 Globetech Media. All rights reserved.