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Fifty-one Genes Predict Breast Cancer Survival

Date:
June 15, 2009
Source:
University of Gothenburg
Summary:
It may be possible in the future to use a specimen from the tumor to determine which patients with breast cancer have a good chance of overcoming the disease, and which patients should be given more intensive treatments. Fifty-one genes may together provide information about the prognosis for an individual patient.

It may be possible in the future to use a specimen from the tumour to determine which patients with breast cancer have a good chance of overcoming the disease, and which patients should be given more intensive treatments. Fifty-one genes may together provide information about the prognosis for an individual patient. These are the conclusions of a thesis presented at the Sahlgrenska Academy, University of Gothenburg, Sweden.

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The research group has analysed specimens from a number of breast tumours, both from patients that died from the disease and from patients surviving at least 10 years from diagnosis. The levels of expression of 51 genes differed between the two groups. It should be possible to use the differences in order to classify the patients into one of two groups: a favourable prognosis group and a poor prognosis group.

"Many breast cancer patients are currently overtreated, while some are undertreated. If it was possible to identify patients with poor prognosis, it would be possible to use greater treatment resources on these patients. At the same time, patients with a favourable prognosis could avoid unnecessary treatment", says Elin Karlsson who successfully defended her thesis on June 5.

Comparing the amounts of the gene products of these 51 genes with data from a previous study has allowed the research team to show that the genes have the ability to predict survival also for the new material.

The research group has also studied the protein BTG2, and shown that it is involved at several levels in the tumours that were examined. The protein was present more often in specimens from patients who had survived at least 5 years after diagnosis than in patients who had died within 5 years from diagnosis. It has been previously determined that this protein is a tumour suppressor, but the study at the Sahlgrenska Academy is the first to indicate it as a prognostic marker.

"We consider it to be a promising marker: it will maybe be possible to use it to determine which patients with breast cancer require particularly close surveillance. More research, however, will be required in


Story Source:

The above story is based on materials provided by University of Gothenburg. Note: Materials may be edited for content and length.


Cite This Page:

University of Gothenburg. "Fifty-one Genes Predict Breast Cancer Survival." ScienceDaily. ScienceDaily, 15 June 2009. <www.sciencedaily.com/releases/2009/06/090610160908.htm>.
University of Gothenburg. (2009, June 15). Fifty-one Genes Predict Breast Cancer Survival. ScienceDaily. Retrieved January 30, 2015 from www.sciencedaily.com/releases/2009/06/090610160908.htm
University of Gothenburg. "Fifty-one Genes Predict Breast Cancer Survival." ScienceDaily. www.sciencedaily.com/releases/2009/06/090610160908.htm (accessed January 30, 2015).

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