OHSU Cancer Institute researcher identifies protein marker for prostate cancer survival

PORTLAND, Ore. Oregon Health & Science University Cancer Institute researchers have identified a protein that is a strong indicator of survival for men with advanced prostate cancer. The C-reactive protein, also known as CRP, is a special type of protein produced by the liver that is elevated in the presence of inflammation.

"This could mean that a simple blood test that is already available could help patients and doctors make better decisions as they become more informed about what to expect from the prostate cancer they are facing," said Tomasz Beer, M.D., director of the Prostate Cancer Research program at the OHSU Cancer Institute, associate professor of medicine, (hematology/medical oncology) OHSU School of Medicine.

Beer's research will be presented Friday, June 1 (CST) at the 43rd annual meeting of the American Society of Clinical Oncologists in Chicago. Julie Graff, M.D., OHSU Cancer Institute member, division of hematology and medical oncology, will present the research.

It has been known that cancer causes an inflammatory response. This research also suggests that inflammation may play an important role in driving prostate cancer progression and resistance to therapy.

"While sometimes inflammation may slow the cancer, an increasing body of evidence suggests that cancer can take advantage of the inflammatory response and the inflammatory cytokines released by the immune reaction may in fact fuel cancer progression. To the extent that our hypothesis proves true, C-reactive protein may be reflecting the overall intensity of the inflammation," Beer said.

The finding that higher CRP is associated with shorter survival and a lower probability of response to chemotherapy is a result of a secondary analysis of inflammatory markers in subjects enrolled in the ASCENT study, a large Phase 2 clinical trial that evaluated treatment with docetaxel and DN-101, a high dose formulation of calcitriol or docetaxel with

Contact: Christine Decker
Oregon Health & Science University

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