A company in Iceland has developed the first genetic test to assess a woman's risk for the most common forms of breast cancer. The test is performed using a blood sample or cheek swab and measures seven genetic variations that account for about half of the breast cancer cases in the U.S. Women then receive a score representing their risk of developing breast cancer. The WaPo reports that some doctors are critical of the $1,625 test, questioning its reliability and worrying that the results could give some women a false sense of complacency or needlessly alarm them. "The idea of introducing into medical practice a test whose predictive value is completely unvetted biologically is frightening," said Mary-Claire King, a geneticist and breast cancer expert at the University of Washington. [UPI]

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