Further, ER-/PR+ tumors were also found in more black women (ER-/PR+ 25.2% vs. ER-/PR- 13.4%, P = 0.012), had higher tumor grade (P = 0.003), and received more CT treatment (ER-/PR+ 67.3% vs. ER-/PR- 56.8%, P = 0.030) than ER+/PR+ tumors. The gene discussed is ESR1; the disease is neoplasm.