State-of-the-state on genetic-based testing, treatment for breast cancer revealed

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Dartmouth researchers at its Norris Cotton Cancer Center have compiled a review of the role that information gathered through genetic testing plays in the diagnosis and treatment of breast cancer. The paper entitled “Personalized Therapy for Breast Cancer” was accepted on March 17, 2014, for publication in Clinical Genetics. The paper discusses targeted therapies, new biomarkers, and the quality of commercially available testing methods.Genomic testing is changing the way breast cancer is diagnosed and treated. By examining a woman’s genes to look for specific mutations or biomarkers, treatment can be personalized to the tumor cell’s biology and a woman’s genetics.”A personalized approach increases the precision and success of breast cancer treatment,” said Gregory Tsongalis, PhD, director of Molecular Pathology at Norris Cotton Cancer Center and lead author of the paper. “Molecular profiling exposes a tumor’s Achilles’ heel. We can see what messages the tumor cells are receiving and sending. It is a biological intelligence gathering mission in an attempt to interrupt the disease.According to Tsongalis large scale genetic testing of breast cancer is not yet part of routine clinical care as it is with lung and colon cancers, even though he and his team run a genetics laboratory for routine cancer care. Genetic testing according to Tsongalis is a powerful weapon in the diagnosis and treatment of breast cancer.With results from the genetic testing of a tumor cell’s biology, clinicians categorize breast cancer in ways that allow them to select the most effective treatments. Based on genetic biomarkers, there are three categories of breast cancer:ER-positive breast cancer needs hormones, such as estrogen to grow. Estrogen fuels cancer cell growth, stops cancer cells from dying, and helps the cells lay down roots to maintain blood supply for tumors. …
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