According to them, these unexpected results have been presented at the European conference on breast cancer, you can make unnecessary chemotherapy for some women, cases of this type of cancer.
Drugs tested on 257 women, attack specific weaknesses in cancer cells that are present in one out of ten cases of breast cancer.
According to experts, these results could become an important stage in the development of individualized cancer treatments.
Doctors who engaged in clinical trials of drugs, did not expect and even did not intend to get such amazing results. They investigated the mechanism of action of these drugs on the transformation of cancer cells in the short period between diagnosis of tumor and the surgery to remove it.
By that time, when some patients had to operate, they had gone all signs of cancer. Professor Judith bliss, Institute of cancer research in London, said that the impact of these drugs was amazing.
"It was about short-term trials, and so we were particularly surprised by these results. It became clear that in some cases the cancer disappeared completely. We don't know why this is happening so quickly," she said.
These medicines have names Lapatinib and Trustumazab — the latter better known under the name Herceptin.
Both drugs selectively affect the protein HER2, which is involved in the formation of cancer cells in breast cancer in women.
Means Herceptin affects the membrane of the cancer cell, while Lapatinib penetrates the cell and neutralizes the HER2 protein.
The study, which was conducted in public hospitals in Manchester, was held on the sick women, whose tumors had sizes from 1 to 3 cm
Less than two weeks of treatment the signs of cancer disappeared completely in 11% of cases and 17% of patients the tumor size decreased to less than 5 mm.
Currently for patients who have HER2-positive cancer of the breast, provided the surgical intervention followed by chemotherapy and the drug Herceptin.
Professor bliss believes that in the future some women will not need to undergo chemotherapy.
However to confirm this more research is needed, especially given the fact that HER2-positive breast cancer has an increased risk of return.
Scientists believe that breast cancer is divided into at least ten separate diseases, each of which has its own causes, course and required treatment.
Selecting specialized drugs that affect certain types of cancer are considered to be the future of Oncology.
The main direction of the revolutionary discoveries in Oncology is the treatment of various types of breast cancer, particularly HER2-positive breast cancer.