No significant differences were observed in tumor PELP1 levels between the subgroups of pre- and postmenopausal (geo mean: 1.41 95% CI: 1.10–1.81; 1.35, 95% CI: 1.19–1.52, respectively) or ER+ and ER- subjects (geo mean: 1.47, 95% CI: 1.11–1.94 and 1.33, 95% CI: 1.18–1.50, respectively, S2 Fig). The gene discussed is PELP1; the disease is neoplasm.