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Cancer cells hide mutations in the years before the development of a tumor

11.09.2018/in News /by Evgeniy Makarevich

Genetic changes in cancer bone cells can appear in the years before cancer starts to grow. The discovery may help to prevent the development of this dangerous disease which appears usually in childhood or adolescence. The results of the study are published in Science journal.
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For the treatment of any type of cancer, it is very important to detect the disease at its early stage. In case of bone cancer and particular Ewing’s sarcoma, it is even harder to diagnose the condition than usually because of extremely fast growing of bone sarcomas and early spreading of metastases (they form secondary tumors in other tissues of the body). The results of the latest study give a chance to “catch” sarcoma before the tumor, in fact, begins to form.
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Two genes of cancer bone cells called EWSR1 and ETS are known to fuse into one gene. However, scientists have not revealed the timing and the reason of fusion before. According to a new study, the genome of more than 100 cancer bone cells has been observed resulting in this mutation has been found to have occurred a few years before the first signs of a tumor appear.
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The researchers have found that the fusion of the two genes called EWSR1 and ETS is not the essential genetic change in cancer cells. In 42% of cases, there are violations of varying complexity in other important sites of the genome. Moreover, the more these violations were complex, the more the cancer cells became aggressive, the more strict measures were necessary for destroying them. According to the study, the discovery will help doctors to select the more effective treatment for each patient.

Link: https://indicator.ru

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