29 Kim Kim HJ HJ Cui Cui X X Hilsenbeck Hilsenbeck SG SG Lee Lee AV AV Progesterone receptor loss correlates with human epidermal growth factor receptor 2 overexpression in estrogen receptor-positive breast cancer Progesterone receptor loss correlates with human epidermal growth factor receptor 2 overexpression in estrogen receptor-positive breast cancer Clin Cancer Res Clin Cancer Res 2006 2006 12 12 1013s 1013s 1018s 1018s 10.1158/1078-0432.CCR-05-2128 10.1158/1078-0432.CCR-05-2128 16467118 16467118. This evidence concerns the gene ESR1 and breast cancer.