The mean ± SD age of participants included in this analysis was 61 ± 8.40 years, the mean BMI was 29 ± 5.77 kg/m2, 72% of carcinomas were ER-positive/PR-positive, and the majority of women had moderately differentiated tumors (58%) at diagnosis, characteristics which were similar to those of the larger total of postmenopausal women who provided frozen tissue specimens from Warsaw [8, 9]. Here, ESR1 is linked to carcinoma.