Women with hormone receptor-positive breast cancer who have negative lymph nodes can take advantage of a test known as OncotypeDX. This test is used to estimate the risk of cancer recurrence in women diagnosed with early stage breast cancer. Results presented at the 2007 annual meeting of the American Society of Clinical Oncology said that the test results changed the oncologist's treatment decisions in about 31 percent of cases.
The test is useful in determining which patients are likely to benefit from chemotherapy in addition to hormonal therapy. It can predict the risk of a patient experiencing a recurrence up to ten years following diagnosis. The patient receives a Recurrence Score that ranges from 0 to 100, the higher the score -- the greater risk of recurrence.
This a great way for oncologists to be able to give individualized treatment -- instead of one size fits all. It's important to get chemotherapy if needed but physicians don't want to over-treat and have the unnecessary risk of side effects from chemotherapy treatment if it's not warranted.











1. The new genomic tests, Oncotype DX and MammaPrint for breast cancer, and Lung Metagene Predictor for lung cancer, can help find out if a cancer patient will benefit from chemotherapy (i.e. which patients are chemosensitive) or not, and if they do (high risk patients), further pre-tests can help see what treatments have the best opportunity of being successful. If patients are low risk, they do not need chemotherapy.
Hopefully, DiagnoCure's genetic test will go the way of Oncotype DX, MammaPrint and Lung Metagene Predictor, in telling physicians which high risk colon cancer patients will likely benefit from chemotherapy (identify patients who are unlikely to have a recurrence if treated with surgery alone) and which ones do not need to be unnecessarily exposed to toxic chemotherapy cocktails.
A number of surgical oncologists are on a campaign to encourage surgeons to obtain and analyze fresh tissues for both cell culture assay and genetic testing. They look at the results of these assays very carefully in the context of other known prognostic factors and often choose agents based on the patient's profiles. These are laboratory tests, used as a tool for the oncologist. The oncologist should take advantage of all the tools available to him/her to treat a patient.
Posted at 5:47PM on Jun 8th 2007 by Gregory D. Pawelski