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Comparison of baseline endoxifen concentration in white and black patients combined and stratified by CYP2D6 phenotype. White and black patients had similar median endoxifen concentrations at baseline compared overall or within CYP2D6 phenotype groups (all p > .05).
Abbreviations: B, black; EM, extensive metabolizer; IM, intermediate metabolizer; PM, poor metabolizer; UM, ultra-rapid metabolizer; W, white.
