PT - JOURNAL ARTICLE AU - Cunningham, Muriel ED - Dowsett, Mitchell TI - Highlights and Future Directions in AI Clinical Research DP - 2014 01 TA - MD Conference Express PG - 16--16 VI - 14 IP - 56 4099 - http://mdc.sagepub.com/content/14/56/16.short 4100 - http://mdc.sagepub.com/content/14/56/16.full AB - Aromatase inhibitors are important agents used for the adjuvant treatment of early hormone receptor-positive breast cancer in postmenopausal women. Studies in early stage breast cancer are ongoing to determine if the cellular proliferation biomarker Ki67 predicts patient response to therapy. Genetic analysis of biopsy specimens may help identify resistance mechanisms.