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Genetic Study of Breast Cancer Suggests New Treatments

The most comprehensive analysis yet of breast cancer shows that one of the most deadly subtypes of this disease is genetically more similar to ovarian tumors than to other breast cancers. The findings of this study suggest that most basal-like breast tumors and ovarian tumors have similar genetic origins and potentially could be treated with the same drugs.

“With this study, we’re one giant step closer to understanding the genetic origins of the four major subtypes of breast cancer,” says medical oncologist Matthew Ellis, MD, PhD, who treats patients with breast cancer at the Siteman Cancer Center at Barnes- Jewish Hospital and Washington University School of Medicine. “Now, we can investigate which drugs work best for patients based on the genetic profiles of their tumors.”

The recently completed analysis of breast cancer is part of The Cancer Genome Atlas project, which brings together leading genetic sequencing centers— including The Genome Institute at Washington University— for the purpose of identifying and cataloging mutations involved in many common cancers. The effort is funded by the National Institutes of Health.
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