Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Researchers identify risk factors for prediction of lethal prostate cancer after recurrence

27.07.2005


Researchers at Johns Hopkins and The Brady Urological Institute have identified three risk factors and developed a simple reference tool that doctors can use to determine who is at high risk of death after prostate cancer recurrence following surgery. The new tool - a set of tables that assess a combination of blood tests, the surgical pathology results and time following surgery - can be used to tell which men with recurring cancer after surgery are most likely to die from their renewed disease and would benefit from further treatment.



"We identified three risk factors associated with death from prostate cancer after recurrence that may allow doctors to distinguish early on between those who need further treatment versus those who are relatively safe and can be carefully watched," says Stephen J. Freedland, M.D., instructor of urology at Johns Hopkins and lead investigator of the report published in the July 27, 2005, issue of the Journal of the American Medical Association.

If discovered early through screening, prostate cancer is treatable and is often cured by a surgical procedure called radical prostatectomy. However, as many as one-third of those who undergo surgery will eventually show signs that the cancer has recurred, said Freedland.


The risk factors are based on:

  • The amount of time, in months, it takes the level of prostate-specific antigen (PSA) in the blood to double after surgery. The shorter the time, the higher the risk.
  • The elapsed time, in years, from surgery to recurrence as measured by the PSA test. Again, the shorter the time the higher the risk.
  • The Gleason score (2-10), a microscopic measurement of prostate cancer aggressiveness when viewed under a microscope. Higher scores reflect more aggressive tumors.

An additional finding was that time to death after recurrence for patients in the low-risk group was quite long -- often much longer than 16 years, added Freedland.

To identify the risk factors, the researchers studied 379 patients treated with radical prostatectomy at Johns Hopkins between 1982 and 2000 who had a biochemical (PSA) recurrence - signs of prostate cancer revealed in blood tests - and had at least two PSA tests after recurrence that were separated by at least three months. The researchers found that the time for the PSA to double, the time from surgery to recurrence, and the Gleason score were significant risk factors for predicting time to death from prostate cancer recurrence and that patients could be divided into either a high-risk or a low-risk group. The categories include PSA doubling time (less then three months versus three to 8.9 months versus nine to 14.9 months versus 15 or more months), Gleason score, (seven or lower versus eight to 10), and time from surgery to biochemical recurrence (three years or under versus more than three years).

For example, patients with a PSA doubling time of less then three months (23 patients) had a median survival of six years. Patients with a PSA doubling time of less than three months, biochemical recurrence three or fewer years after surgery, and a Gleason score of eight to 10 (15 patients) had a median survival of three years. However, patients with a PSA doubling time of 15 months or more and a biochemical recurrence more than three years after surgery (82 patients) had a 100 percent survival. Using these three risk factors, the researchers then constructed tables to estimate the risk of prostate cancer-specific survival at five, 10, and 15 years after biochemical recurrence.

"We hope the tables will be useful to patients and their physicians for assessing the risk of death from prostate cancer following recurrence after surgery and guide the need for additional treatments," said Freedland.

Trent Stockton | EurekAlert!
Further information:
http://www.jhmi.edu
http://jama.ama-assn.org/
http://urology.jhu.edu/

More articles from Health and Medicine:

nachricht Organ-on-a-chip mimics heart's biomechanical properties
23.02.2017 | Vanderbilt University

nachricht Researchers identify cause of hereditary skeletal muscle disorder
22.02.2017 | Klinikum der Universität München

All articles from Health and Medicine >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Safe glide at total engine failure with ELA-inside

On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded after a glide flight with an Airbus A320 in ditching on the Hudson River. All 155 people on board were saved.

On January 15, 2009, Chesley B. Sullenberger was celebrated world-wide: after the two engines had failed due to bird strike, he and his flight crew succeeded...

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

New pop-up strategy inspired by cuts, not folds

27.02.2017 | Materials Sciences

Sandia uses confined nanoparticles to improve hydrogen storage materials performance

27.02.2017 | Interdisciplinary Research

Decoding the genome's cryptic language

27.02.2017 | Life Sciences

VideoLinks
B2B-VideoLinks
More VideoLinks >>>