Tamoxifen is a widely used and highly successful drug in the treatment of breast cancer, though resistance to tamoxifen is still a concern in recurrent disease (affecting 25-35% of patients), since therapy resistant metastatic tumor cells are a major cause of death. In a study in this month's Molecular and Cellular Proteomics, researchers have uncovered a protein profile that may accurately predict whether a cancer will be tamoxifen resistant.
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