A. Total percent (%) of patients that are ERRβ positive, by IHC subtype, *p<0.01. b. Ratio of total ERRβ2:total ERRβsf determined for ER+, HER2+, and TNBC patients. c-e. ERRβ expression by race. Interactions between ERRβ2 receptor expression (c,d) and ERRβsf expression (e,f) and race. Two- way ANOVA, followed by DSCF pair-wise comparison *p < 0.05