Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Canadian-led study identifies which colon cancer patients benefit from chemotherapy

17.07.2003


New insight is important step forward in personalized cancer care

A new Canadian-led study in the latest issue of the New England Journal of Medicine shows that a simple genetic test can determine if chemotherapy will be effective in treating a patient’s colon cancer, the second leading cause of cancer deaths in North America.
The study, led by doctors and researchers from Toronto’s Princess Margaret Hospital and Mount Sinai Hospital, examined 570 tissue samples from colon cancer patients. Colon cancer, which will kill an estimated 8,300 Canadians this year, is usually treated by a combination of surgery and chemotherapy.


The study determined that patients with a specific mutation in their tumor, called high-frequency microsatellite instability, did not benefit from chemotherapy, which can be a very difficult treatment with significant unpleasant side effects. The study’s findings represent a significant step forward in providing individualized treatment plans for colon cancer patients.

"This study shows that the usual type of chemotherapy is effective for about 83 per cent of colon cancer patients," said lead author Dr. Steven Gallinger, a surgical oncologist at Mount Sinai Hospital and University Health Network, as well as Professor of Surgery at University of Toronto. "Yet, for nearly 17 per cent of colon cancer patients, the traditional chemotherapy treatment is not helpful, and may even be harmful."

The study, which also involved doctors and researchers from the United States and France, shows that further investigation is needed to provide alternatives for these patients, such as new drugs that are effective on tumors with high-frequency microsatellite instability.

Testing for this genetic mutation could easily become a regular routine during diagnosis, with the results being used to direct the rational use of chemotherapy in colon cancer.

"Undergoing chemotherapy is not an easy decision. Side effects can include sore throat and mouth, tiredness, increased risk of infection, and in a small number of cases, even serious life-threatening illness," said Dr. Malcolm Moore, a Princess Margaret Hospital medical oncologist involved in the study. "If we can select the patients most likely to benefit from therapy, we can restrict therapy to that population and spare the remaining patients the trauma of that type of treatment."

Vince Rice | EurekAlert!
Further information:
http://www.utoronto.ca

More articles from Health and Medicine:

nachricht 'Icebreaker' protein opens genome for t cell development, Penn researchers find
21.02.2018 | University of Pennsylvania School of Medicine

nachricht Similarities found in cancer initiation in kidney, liver, stomach, pancreas
21.02.2018 | Washington University School of Medicine

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: In best circles: First integrated circuit from self-assembled polymer

For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.

In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...

Im Focus: Demonstration of a single molecule piezoelectric effect

Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale

Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...

Im Focus: Hybrid optics bring color imaging using ultrathin metalenses into focus

For photographers and scientists, lenses are lifesavers. They reflect and refract light, making possible the imaging systems that drive discovery through the microscope and preserve history through cameras.

But today's glass-based lenses are bulky and resist miniaturization. Next-generation technologies, such as ultrathin cameras or tiny microscopes, require...

Im Focus: Stem cell divisions in the adult brain seen for the first time

Scientists from the University of Zurich have succeeded for the first time in tracking individual stem cells and their neuronal progeny over months within the intact adult brain. This study sheds light on how new neurons are produced throughout life.

The generation of new nerve cells was once thought to taper off at the end of embryonic development. However, recent research has shown that the adult brain...

Im Focus: Interference as a new method for cooling quantum devices

Theoretical physicists propose to use negative interference to control heat flow in quantum devices. Study published in Physical Review Letters

Quantum computer parts are sensitive and need to be cooled to very low temperatures. Their tiny size makes them particularly susceptible to a temperature...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

2nd International Conference on High Temperature Shape Memory Alloys (HTSMAs)

15.02.2018 | Event News

Aachen DC Grid Summit 2018

13.02.2018 | Event News

How Global Climate Policy Can Learn from the Energy Transition

12.02.2018 | Event News

 
Latest News

Researchers invent tiny, light-powered wires to modulate brain's electrical signals

21.02.2018 | Life Sciences

The “Holy Grail” of peptide chemistry: Making peptide active agents available orally

21.02.2018 | Life Sciences

Atomic structure of ultrasound material not what anyone expected

21.02.2018 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>