Daily Archives: December 11, 2008

Gene Testing may be Key for Treating Some Women with Breast Cancer

Findings from a new study prompt Mayo Clinic researchers to recommend CYP2D6 gene testing for postmenopausal women about to begin tamoxifen therapy. New data confirms that women with an inherited deficiency in the CYP2D6 gene important for the metabolism of tamoxifen have a nearly 4-fold higher risk of early breast cancer recurrence compared to women [...]