With the help of immunotherapy failed to win the most aggressive type of breast cancer

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2017-06-05 13:00:06

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With the help of immunotherapy failed to win the most aggressive type of breast cancer Source:

To combat life-threatening diseases, scientists are increasingly turning to the development of tools that will destroy the pathological agent is not alone, as «spur» the human immune system to cope with the disease. And recently, a group of physicians from new York University, said that with the help of immunotherapy, they managed to beat triple negative breast cancer (triple negative breast cancer) — one of the most aggressive forms of cancer.

Triple negative breast cancer gets its name from the fact that in the study of neoplastic processes of the breast distinguish 3 kinds of sensitivity: receptors for estrogens (ER), progesterone receptors (PR) and sensitivity to Herceptin (her2neu). In the case when the tumor has no receptors and is not sensitive to the Herceptin, it is called triple negative. This type of cancer extremely difficult to treat.

American scientists with the help of impact on antibodies, roughly speaking, «unleashed» the immune system on cancer cells. Responsible for the discovery research group, led by Sylvia Adams. Some time ago, scientists worked with one of the first drugs for immunotherapy called «pembrolizumab». Antibodies secreted under the action of this drug was so powerful that scientists decided to use it to fight the most aggressive forms of cancer.

During a series of clinical research professionals selected 2 groups of women, suffering from two different subtypes of triple-negative breast cancer and tried to stop the growth of tumors and inhibit the development of metastases. In the end it turned out that the antibodies were able to reduce tumor size by 30% in 5% of women from one group and 23% from another, and to stop the growth of metastases turned out at 21% and 17% of patients, respectively. As says the author of the study

«the Main advantage of the drug is that it is very well tolerated by the body – only 8% of the participants of the experiment from the first group and 12% from the second group were forced to abandon it due to severe side effects. For chemotherapy, this figure is significantly more, which greatly limits its use and effectiveness. Unfortunately, the drug work at all, and only some of the women we worked with, but in all these cases, it is very well coped with the task of suppressing cancer and it was stable for a long time. Immunotherapy causes less side effects and prolongs life stronger than chemotherapy».

Based on materials of agencies of RIA «news»

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