Steven Rosenberg, who is leading the ongoing clinical trial, suggests this is an exciting early result, highlighting that this kind of treatment is not cancer-type specific but can be applied to a broad variety of different cancers.
"The impact is tremendous", said the study leader, Dr. Joseph Sparano of Montefiore Medical Center in NY. Since 2006, the trial has enrolled more than 10,000 women in the United States and five other countries diagnosed with early breast cancer and followed their progress through post-surgery treatment.
Her case, detailed in the journal Nature Medicine, involves a new treatment which harnesses the body's own immune system to destroy cancerous cells.
An experimental new therapy for advanced breast cancer is being hailed as a "paradigm shift" in treating the disease.
Women affected by these new findings have the following traits: They are estrogen sensitive, test negative for her-2, and have early stage tumors that have not spread to lymph nodes. "Women don't have to suffer more than there is necessary to be better".
Previous clinical trials using immunotherapy to treat breast cancer have proved largely ineffective.
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The ash forced the closure of La Aurora International Airport, where the military assisted in clearing ash off the runway. Videos published by local media show bodies lying on top of a lava flow and rescuers attending to people covered in ash.
Until now, chemotherapy was highly recommended with a result greater than 25, and below 10 it was not.
Researchers found skipping chemo won't hurt patients' chances of survival.
The results show that all women over 50 with a recurrence score of 0 to 25 can be spared chemotherapy and its toxic side effects. She has now been entirely free of cancer for two years.
The study was funded by the National Cancer Institute, some foundations and proceeds from the USA breast cancer postage stamp.
Dr. Otis Brawley, chief medical and scientific officer for the American Cancer Society said that he was "delighted" by the study and anxious about unnecessary cancer treatment and the side effects that come from chemotherapy.
Oncotype DX costs around $4,000, which Medicare and many insurers cover say researchers and all women should undergo it.
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Dr. Albain, the Huizenga Family Endowed Chair in Oncology Research at Loyola University Chicago Stritch School of Medicine, has conducted research with the 21-gene test and also used it in her practice for years.
This means thousands of women will be able to avoid all of the side effects chemotherapy implies, such as nausea, vomiting, hair loss and fatigue, while still achieving positive long-term outcomes.
The test is performed on tumor samples post surgery, to determine if chemo would benefit a patient.
Dr. Jennifer Litton at MD Anderson Cancer Center in Houston, agreed, but said: "Risk to one person is not the same thing as a risk to another".
Tuttle said just having radiation was tough to go through and can't imagine going through chemo on top of it. After years of follow-up, the data showed that most patients who did not get chemotherapy fared as well as those who did.
"I was a little relieved".
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Dr Ring said the publication of the trial results was "timely", adding: "I would be very, very keen that the TAILORx results are incorporated into that evaluation. Now we know there's no need to give chemotherapy to those patients anymore", Mitchell said. "I'm a firm believer in medical research".