%0 Journal Article %T CYP2D6 genotypes, endoxifen levels, and disease recurrence in 224 Filipino and Vietnamese women receiving adjuvant tamoxifen for operable breast cancer %A Richard R Love %A Zuerenesay Desta %A David Flockhart %A Todd Skaar %A Evan T Ogburn %A Anuradha Ramamoorthy %A Gemma B Uy %A Adriano V Laudico %A Nguyen Van Dinh %A Le Hong Quang %A Ta Van To %A Gregory S Young %A Erinn Hade and David Jarjoura %J SpringerPlus %D 2013 %I Springer %R 10.1186/2193-1801-2-52 %X This exploratory analysis suggests that there is an optimal range for endoxifen concentrations to achieve favorable effects as adjuvant therapy. In particular, at higher concentrations (>70 ng.ml), endoxifen may promote recurrence. %U http://www.springerplus.com/content/2/1/52/abstract